Browse classification

Loading Please Wait
T:
 T04:
  T04M: INDEXING SCHEME RELATING TO TELEPHONIC COMMUNICATION
   T04M1/00: Substation equipment, e.g. for use by subscribers
   T04M1/00B: Telephone sets using electrooptical means in the transmission path
   T04M1/00T: Call diverting means
   T04M1/02: Constructional features of telephone sets
   T04M1/02A: . . Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
   T04M1/02A1: . . . including a battery compartment
   T04M1/02A10: . . . Details of the mechanical connection between the housing parts or relating to the method of assembly
   T04M1/02A10S: . . . . by means of a snap-on mechanism
   T04M1/02A12: . . . comprising one or a plurality of mechanically detachable modules
   T04M1/02A12F: . . . . wherein the modules are operable in the detached state, e.g. one module for the user interface and one module for the transceiver
   T04M1/02A12H: . . . . for a headset device
   T04M1/02A14: . . . Details of the structure or mounting of specific components
   T04M1/02A14B: . . . . for a battery compartment
   T04M1/02A14C: . . . . for a camera module assembly
   T04M1/02A14D: . . . . for a display module assembly
   T04M1/02A14D2: . . . . . including a flexible display panel
   T04M1/02A14D4: . . . . . including magnifying means
   T04M1/02A14F: . . . . [N: for a projector or beamer module assembly (constructional features of projectors per se G03B21; constructional details of projectors using electronic spatial light modulators per se H04N9/31) ]
   T04M1/02A14M: . . . . for an electrical connector module
   T04M1/02A14P: . . . . for a printed circuit board assembly
   T04M1/02A16: . . . Improving the user comfort or ergonomics
   T04M1/02A16A: . . . . for providing single handed use or left/right hand conversion
   T04M1/02A16D: . . . . for providing a decorative aspect, e.g. customization of casings, exchangeable faceplate
   T04M1/02A16P: . . . . Pen-type handsets
   T04M1/02A18: . . . [N: being disposable or recyclable ]
   T04M1/02A2: . . . Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings
   T04M1/02A2B: . . . . characterized by the relative motions of the body parts
   T04M1/02A2B2: . . . . . using combined folding and rotation motions
   T04M1/02A2B2F: . . . . . . with a two degrees of freedom mechanism, i.e. folding around a first axis and rotating around a second axis perpendicular to the first
   T04M1/02A2B4: . . . . . Foldable telephones, i.e. with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
   T04M1/02A2B4F: . . . . . . Foldable in one direction, i.e. using a one degree of freedom hinge N0612]
   T04M1/02A2B4F1: . . . . . . . The hinge comprising input and/or output user interface means
   T04M1/02A2B4F2: . . . . . . . The hinge comprising two parallel pivoting axes
   T04M1/02A2B4T: . . . . . . Foldable in two directions, i.e. using a two degree of freedom hinge
   T04M1/02A2B6: . . . . . Rotatable telephones, i.e. the body parts pivoting to an open position around an axis perpendicular to the plane they define in closed position
   T04M1/02A2B6F: . . . . . . Rotatable in one plane, i.e. using a one degree of freedom hinge
   T04M1/02A2B6F1: . . . . . . . The hinge comprising input and/or output user interface means
   T04M1/02A2B6K: . . . . . . Including a rotatable keypad body part
   T04M1/02A2B6S: . . . . . . Including a rotatable display body part
   T04M1/02A2B8: . . . . . Slidable or telescopic telephones, i.e. with a relative translation movement of the body parts; Telephones using a combination of translation and other relative motions of the body parts
   T04M1/02A2B8F: . . . . . . Sliding mechanism with one degree of freedom
   T04M1/02A2B8T: . . . . . . Sliding mechanism with two degree of freedom, e.g. translation in two different directions
   T04M1/02A2F: . . . . using relative motion of the body parts to change the operational status of the telephone set, e.g. switching on/off, answering incoming call
   T04M1/02A2F1: . . . . . using the relative angle between housings
   T04M1/02A2F2: . . . . . using open/close detection
   T04M1/02A2P: . . . . comprising more than two body parts
   T04M1/02A3: . . . User customisation of casing, e.g. exchangeable faceplate; Decorative aspects of casings
   T04M1/02B: . . Telephone sets for operators
   T04M1/02C: . . Door telephones
   T04M1/02D: . . Terminal boxes for telephone sets
   T04M1/02S: . . [N: mechanical mounting details of display modules (for portable telephones H04M1/02A14D) ]
   T04M1/02W: . . Telephone sets adapted to be mounted on a desk and/or on a wall
   T04M1/03: . . Constructional features of telephone transmitters or receivers, e.g. telephone handsets
   T04M1/03C: . . . Improving the acoustic characteristics by means of constructional features of the housing, e.g. ribs, walls, resonating chambers or cavities
   T04M1/04: . . Supports for telephone transmitters or receivers
   T04M1/05: . . . adapted for use on head, throat, or breast
   T04M1/06: . . . Hooks; Cradles
   T04M1/08: . . . . associated with switches operated by weight of receiver or hand-set
   T04M1/10: . . . . associated with switches operated by magnetic effect due to proximity of receiver or hand-set
   T04M1/11: . . Supports for sets, e.g. incorporating armrests
   T04M1/12: . . . Adjustable supports, e.g. extensible
   T04M1/13: . . . . pantographic
   T04M1/14: . . . with resilent means to eliminate extraneous vibrations
   T04M1/15: . . Protection of telephone cord; Guiding telephone cord; Winding-up telephone cord
   T04M1/17: . . hygienic or sanitary devices on telephone equipment
   T04M1/18: . . Telephone sets modified for use in ships, mines, or other places exposed to adverse environment
   T04M1/18R: . . . Improving the rigidity of the casing or resistance to shocks
   T04M1/19: . . Arrangements of transmitters, receivers, or complete sets to prevent eavesdropping, to attenuate local noise or to prevent undesired transmission; Special mouthpieces or receivers therefor
   T04M1/20: . . Arrangements for preventing acoustic feed-back
   T04M1/21: . . Combinations with auxiliary equipment, e.g. with clock, with memoranda pad
   T04M1/215: . . . by non-intrusive coupling means, e.g. acoustic couplers]
   T04M1/215A: . . . . Acoustic coupling
   T04M1/22: . . Illuminating; Arrangements for improving visibility of characters on dials
   T04M1/23: . . Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof
   T04M1/23P: . . . including a pointing device, e.g. roller key, track ball, rocker switch or joystick
   T04M1/23S: . . . including keys on side or rear faces
   T04M1/24: Arrangements for testing
   T04M1/247: Telephone sets including user guidance or features selection means facilitating their use
   T04M1/247A: . . [N: Configurable and interactive telephone terminals with subscriber controlled features modifications, e.g. with ADSI capability
   T04M1/247A1: . . . with programmable function keys
   T04M1/247C: . . Telephone terminals interfacing a personal computer, e.g. using an API
   T04M1/247D: . . Telephone terminals specially adapted for disabled people
   T04M1/247D1: . . . for a hearing impaired user
   T04M1/247D2: . . . for a visually impaired user
   T04M1/247F: . . for selecting a function from a menu display
   T04M1/247F1: . . . using a roller key or trackball
   T04M1/247N: . . Telephone terminals specially adapted for non-voice services, e.g. email, internet access
   T04M1/253: Telephone sets using digital voice transmission
   T04M1/253W: . . adapted for voice communication over an Internet Protocol (IP) network
   T04M1/26: Devices for signalling identity of wanted subscriber
   T04M1/27: . . Devices whereby a plurality of signals may be stored simultaneously
   T04M1/272: . . . with provision for storing only one subscriber number at a time, e.g. by keyboard or dial
   T04M1/272A: . . . . using electronic memories
   T04M1/274: . . . with provision for storing more than one subscriber number at a time
   T04M1/2745: . . . . using static electronic memories, i.e. memories whose operation does not require relative movement between storage means and a transducer, e.g. chip
   T04M1/2745A: . . . . . Phone book architecture allowing to store a plurality of information regarding one subscriber
   T04M1/2745C: . . . . . whose content are provided by data transmission or downloaded
   T04M1/2745D: . . . . . Retrieving by scrolling on a display
   T04M1/2745E: . . . . . Telephone number directory management, e.g. manually editing, erasing or modifying data stored in the directory
   T04M1/2745F: . . . . . Predictive input, predictive dialling by comparing the dialled sequence with the content of a telephone directory
   T04M1/2745G: . . . . . Retrieving by interactive graphical means or pictorial representation
   T04M1/2745M: . . . . . Retrieving by matching an alphabetic string
   T04M1/2745P: . . . . . Appending a prefix or inserting a pause to a dialling sequence
   T04M1/2745R: . . . . . Automatic call origination and retry systems, e.g. on off-hook or redial on busy
   T04M1/2745S: . . . . . Sorted according to a specific criteria, e.g. history or frequency of use
   T04M1/2745Z: . . . . . Implemented by means of discrete electronic components, i.e. neither programmable nor micro-processor controlled
   T04M1/275: . . . . . implemented by means of portable electronic directories
   T04M1/2755: . . . . . whose contents are provided by optical scanning
   T04M1/276: . . . . using magnetic recording, e.g. on tape
   T04M1/276A: . . . . . implemented by means of portable magnetic cards
   T04M1/278: . . . . using punched cards or tapes
   T04M1/27A: . . . controlled by voice recognition
   T04M1/30: . . Devices which can set up and transmit only one digit at a time
   T04M1/31: . . . by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
   T04M1/315: . . . . Clutches, spring assemblies, speed regulators, e.g. centrifugal brakes
   T04M1/31A: . . . . pulses produced by electronic circuits
   T04M1/32: . . . . Locking setting devices during transmission to prevent interference by user
   T04M1/34: . . . . Lost-motion or other arrangements for ensuring a pause between successive digit transmissions
   T04M1/38: . . . . Pulses transmitted by a movement variably limited by the setting of a stop
   T04M1/40: . . . . wherein the setting-operation short-circuits or open-circuits the transmitting mechanism during a variable part of a cycle
   T04M1/50: . . . by generating or selecting currents of predetermined frequencies or combinations of frequencies
   T04M1/50A: . . . . signals generated in digital form
   T04M1/515: . . by generating or selecting other signals than trains of pulses of similar shape or other signals than currents of one or more different frequencies, e.g. generation of direct current signals of alternating polarity, coded pulses, impedance dialling
   T04M1/52: . . Arrangements wherein a dial or equivalent is mechanically coupled to a line selector
   T04M1/53: . . Generation of additional signals, e.g. additional pulses
   T04M1/54: . . . Arrangements wherein a dial or equivalent generates identifying signals, e.g. in party-line systems
   T04M1/56: Arrangements for indicating or recording the called number at the calling subscriber`s set
   T04M1/57: Arrangements for indicating or recording the number of the calling subscriber at the called subscriber`s set
   T04M1/57B: . . Blocking transmission of caller identification to called party
   T04M1/57M: . . Line monitoring circuits for detecting caller identification
   T04M1/57P: . . Means for retrieving and displaying personal data about calling party
   T04M1/57P1: . . . associated with a pictorial or graphical representation
   T04M1/57P2: . . . associated with a synthesized vocal announcement
   T04M1/58: Anti- side- tone circuits
   T04M1/58H: . . implemented without inductive element
   T04M1/60: including speech amplifiers
   T04M1/60M: . . in the transmitter circuit
   T04M1/60R: . . in the receiver circuit
   T04M1/60S: . . implemented as integrated speech networks
   T04M1/60T: . . for providing handsfree use or a loudspeaker mode in telephone sets
   T04M1/60T2: . . . Portable telephones adapted for handsfree use
   T04M1/60T2A: . . . . by controlling the receiver volume to provide a dual operational mode at close or far distance from the user
   T04M1/60T2B: . . . . by using a headset accessory device connected to the portable telephone
   T04M1/60T2B2: . . . . . including a wireless connection
   T04M1/60T2C: . . . . adapted for handsfree use in a vehicle
   T04M1/60T2C2: . . . . . by interfacing with the vehicle audio system
   T04M1/60T2C2A: . . . . . . including a wireless interface
   T04M1/62: . . Constructional arrangements
   T04M1/64: Automatic arrangements for answering calls; Automatic arrangements for recording messages for absent subscribers; Arrangements for recording conversations
   T04M1/64D: . . storing speech in digital form
   T04M1/64D2: . . . with speech synthesis
   T04M1/64M: . . using magnetic tape
   T04M1/65: . . Recording arrangements
   T04M1/652: . . . Means for playing back the recorded messages by remote control over a telephone line
   T04M1/654: . . . Telephone line monitoring circuits therefor, e.g. ring detector
   T04M1/654B: . . . . mechanically actuating hook switch, e.g. lifting handset
   T04M1/656: . . . for recording conversations
   T04M1/658: . . . Means for redirecting recorded messages to other extensions or equipment
   T04M1/65D: . . . storing speech in digital form
   T04M1/65D2: . . . . with speech synthesis
   T04M1/65M: . . . using magnetic tape
   T04M1/66: with means for preventing unauthorised or fraudulent calling
   T04M1/663: . . preventing unauthorised calls to a telephone set
   T04M1/665: . . . by checking the validity of a code
   T04M1/667: . . preventing unauthorised calls from a telephone set
   T04M1/67: . . . by electronic means
   T04M1/673: . . . . the user being required to key in a code
   T04M1/675: . . . . the user being required to insert an IC card
   T04M1/677: . . preventing the sending of predetermined telephone numbers
   T04M1/677A: . . . by providing access to a few preprogrammed keys
   T04M1/68: Circuit arrangements for preventing eavesdropping
   T04M1/70: . . Lock-out or secrecy arrangements in party-line systems
   T04M1/72: Substation extension arrangements
   T04M1/723: . . using two or more extensions per line
   T04M1/725: . . Cordless telephones
   T04M1/725C: . . . with one base station connected to a single line
   T04M1/725C2: . . . . Radio link set-up procedure
   T04M1/725C2C: . . . . . using a control channel
   T04M1/725C2F: . . . . . Searching for an available channel
   T04M1/725C2H: . . . . . On hold, intercom or transfer communication modes
   T04M1/725C4: . . . . including out-of-range alerting means
   T04M1/725F: . . . Portable communication terminals with improved user interface to control a main telephone operation mode or to indicate the communication status
   T04M1/725F1: . . . . With means for supporting locally a plurality of applications to increase the functionality
   T04M1/725F1A: . . . . . provided by software upgrading or downloading
   T04M1/725F1B: . . . . . provided by interfacing with an external accessory
   T04M1/725F1B1: . . . . . . using a two-way short-range wireless interface
   T04M1/725F1B2: . . . . . . for remote control of appliances
   T04M1/725F1E: . . . . . for supporting an emergency service
   T04M1/725F1E2: . . . . . . with automatic feature activation, e.g. upon sensing of an alarm condition
   T04M1/725F1E4: . . . . . . with manual feature activation
   T04M1/725F1G: . . . . . for supporting a game or graphical animation
   T04M1/725F1M: . . . . . with interactive input/output means for internally managing multimedia messages
   T04M1/725F1M2: . . . . . . for voice messaging, e.g. dictaphone
   T04M1/725F1M4: . . . . . . for text messaging, e.g. sms, e-mail
   T04M1/725F1M6: . . . . . . for still or moving picture messaging
   T04M1/725F1P: . . . . . for playing back music files
   T04M1/725F1W: . . . . . for supporting an internet browser application
   T04M1/725F2: . . . . with means for adapting by the user the functionality or the communication capability of the terminal under specific circumstances
   T04M1/725F2A: . . . . . depending on a schedule, a location or a context
   T04M1/725F2B: . . . . . by connection of an exchangeable housing part
   T04M1/725F2C: . . . . . according to a schedule or a calendar application
   T04M1/725F2E: . . . . . according to context or environment related information
   T04M1/725F2G: . . . . . according to a geographic location
   T04M1/725F2H: . . . . . by connection of an exchangeable housing part
   T04M1/725F2R: . . . . . to restrict the functionality or the communication capability of the terminal
   T04M1/725F3: . . . . by using keys with multiple functionality defined by the current phone mode or status
   T04M1/725F4: . . . . for operating the terminal by selecting telephonic functions from a plurality of displayed items, e.g. menus, icons
   T04M1/725F4S: . . . . . wherein the items are sorted according to a specific criteria, e.g. frequency of use
   T04M1/725F5: . . . . specially adapted for disabled people
   T04M1/725F5H: . . . . . for a hearing impaired user
   T04M1/725F5V: . . . . . for a visually impaired user
   T04M1/725F6: . . . . wherein handling of applications is triggered by incoming communication events changing user alerting upon occurrence of events H04M19/04
   T04M1/727: . . . Identification code transfer arrangements
   T04M1/73: . . . Battery saving arrangements
   T04M1/733: . . . with a plurality of base stations connected to a plurality of lines
   T04M1/737: . . . characterised by transmission of electromagnetic waves other than radio waves, e.g. infra-red
   T04M1/738: Interface circuits for coupling substations to external telephone lines
   T04M1/738P: . . Programmable or microprocessor-controlled
   T04M1/74: . . with means for reducing interference; with means for reducing effects due to line faults
   T04M1/74P: . . . Protection devices or circuits for voltages surges on the line
   T04M1/76: . . Compensating for differences in line impedance
   T04M1/78: Circuit arrangements in which low-frequency speech signals proceed in one direction on the line, while speech signals proceeding in the other direction on the line are modulated on a high-frequency carrier signal
   T04M1/80: Telephone line holding circuits
   T04M1/82: Line monitoring circuits for call progress or status discrimination
   T04M3/00: Automatic or semi-automatic exchanges
   T04M3/00E: Applications of echo suppressors or cancellers
   T04M3/00L: Interface circuits for subscriber lines
   T04M3/00L2: . . Access interface units for simultaneous transmission of speech and data, e.g. digital subscriber line (DSL) access interface units
   T04M3/02: Ringing or otherwise calling substations
   T04M3/04: . . calling signal supplied from final selector
   T04M3/06: . . calling signal supplied from subscriber`s line circuit
   T04M3/08: Indicating faults in circuits or apparatus
   T04M3/08L: . . Fault locating arrangements
   T04M3/10: . . Providing fault or trouble signals
   T04M3/12: . . Marking faulty circuits "busy"; Enabling equipment to disengage itself from faulty circuits; using redundant circuits; Response of a circuit, apparatus or system to an error
   T04M3/14: . . Signalling existence of persistent "off-hook" condition
   T04M3/16: with lock-out or secrecy provision in party-line systems
   T04M3/18: with means for reducing interference or noise; with means for reducing effects due to line faults; with means for protecting lines
   T04M3/20: with means for interrupting existing connections; with means for breaking-in on conversations
   T04M3/20E: . . Eavesdropping prevention - indication of insecurity of line or network
   T04M3/22: Supervisory, monitoring, testing or management arrangements
   T04M3/22B: . . for lines also used for data transmission
   T04M3/22D: . . Call detail recording
   T04M3/22F: . . Quality of service monitoring
   T04M3/22K: . . Quality of speech transmission monitoring
   T04M3/22L: . . Management of the local loop plant
   T04M3/22N: . . in networks
   T04M3/22N2: . . . Network management
   T04M3/22S: . . Subscriber line supervision circuits, e.g. call detection circuits
   T04M3/22T: . . Call monitoring, e.g. for law enforcement purposes; Call tracing; Detection or prevention of malicious calls
   T04M3/22W: . . Wire identification arrangements; Number assignment determination arrangements
   T04M3/24: . . with provision for checking the normal operation
   T04M3/24A: . . . for stored program controlled exchanges
   T04M3/24A1: . . . . Software testing
   T04M3/24B: . . . for multiplex systems
   T04M3/24B1: . . . . for ISDN systems
   T04M3/24E: . . . Knowledge-based maintenance systems
   T04M3/24M: . . . for metering arrangements or prepayment telephone systems
   T04M3/26: . . with means for applying test signals or for measuring
   T04M3/28: . . . Automatic routine testing
   T04M3/30: . . . . for subscriber`s lines
   T04M3/30C: . . . . . Circuit arrangements at the subscriber`s side of the line
   T04M3/30M: . . . . . using modulation techniques for copper pairs
   T04M3/30M2: . . . . . . and using PCM multiplexers, e.g. pair gain systems
   T04M3/30M4: . . . . . . and using xDSL modems
   T04M3/30P: . . . . . testing of physical copper line parameters, e.g. capacitance or resistance
   T04M3/30P2: . . . . . . for frequencies above the voice frequency, e.g. xDSL line qualification
   T04M3/30R: . . . . . using ringback
   T04M3/30T: . . . . . Craftsperson test terminals
   T04M3/32: . . . . for lines between exchanges
   T04M3/32A: . . . . . for the arrangements providing the connection (test connection, test call, call simulation)
   T04M3/32B: . . . . . for registers and translators
   T04M3/34: . . . Testing for cross-talk
   T04M3/36: . . Statistical metering, e.g. recording occasions when traffic exceeds capacity of trunks
   T04M3/36A: . . . Traffic simulation
   T04M3/36B: . . . Load metering of control unit
   T04M3/36C: . . . Traffic or load control
   T04M3/38: Graded-service arrangements, i.e. some subscribers prevented from establishing certain connections
   T04M3/38A: . . using authorisation codes or passwords
   T04M3/38A2: . . . using speech signals
   T04M3/38S: . . using subscriber identification cards
   T04M3/40: Applications of speech amplifiers
   T04M3/42: Systems providing special services or facilities to subscribers
   T04M3/424: . . Arrangements for automatic redialling
   T04M3/428: . . Arrangements for placing incoming calls on hold
   T04M3/428B: . . . when the called subscriber is connected to a data network using his telephone line, e.g. dial-up connection, Internet browsing
   T04M3/428H: . . . Call holding circuits
   T04M3/428M: . . . Notifying, informing or entertaining a held party while on hold, e.g. Music On Hold
   T04M3/428R: . . . Notifying a held subscriber when his held call is removed from hold
   T04M3/428W: . . . Notifying a called subscriber of an incoming call during an ongoing call, e.g. Call Waiting
   T04M3/42A: . . Systems for anonymous communication between parties, e.g. by use of disposal contact identifiers
   T04M3/42B: . . Customized ring back tones
   T04M3/42C: . . Calling or Called party identification service
   T04M3/42C1: . . . Calling party identification service
   T04M3/42C1N: . . . . Notifying the called party of information on the calling party
   T04M3/42C1N2: . . . . . where the notification is included in the ringing tone
   T04M3/42C1U: . . . . Making use of the calling party identifier
   T04M3/42C1U2: . . . . . where the identifier is used to access a profile
   T04M3/42C1U4: . . . . . where the identifier is a Uniform Resource Locator
   T04M3/42C2: . . . Called party identification service
   T04M3/42C2N: . . . . Notifying the calling party of information on the called or connected party
   T04M3/42C2U: . . . . Making use of the called party identifier
   T04M3/42C2U2: . . . . . where the identifier is used to access a profile
   T04M3/42C2U4: . . . . . where the identifier is a Uniform Resource Locator
   T04M3/42D: . . Systems providing several special services or facilities from groups H04M3/42A to H04M3/58
   T04M3/42E: . . Administration of services
   T04M3/42E1: . . . by service provider
   T04M3/42E2: . . . by subscriber
   T04M3/42E2D: . . . . via computer interface
   T04M3/42E3: . . . Managing of service interactions
   T04M3/42E5: . . . by downloading data to substation equipment
   T04M3/42F: . . Lines and connections with preferential service
   T04M3/42G: . . Arrangements for calling back a calling subscriber (when the wanted subscriber ceases to be busy T04M3/48)
   T04M3/42H: . . Service or number selection by voice
   T04M3/42K: . . Call pickup
   T04M3/42L: . . Conversation recording
   T04M3/42M: . . Personal communication services, i.e. services related to one subscriber independent of his terminal and/or location
   T04M3/42M2: . . . in systems with telephone lines with multiple users
   T04M3/42M5: . . . where the subscriber uses a multi-mode terminal which moves and accesses different networks with at least one network having a wireline access including cordless PBX
   T04M3/42M5P: . . . . with the subscriber having a personal network-independent number
   T04M3/42M7: . . . where the same subscriber uses different terminals, i.e. nomadism
   T04M3/42M7P: . . . . whereby the subscriber registers to the terminals for personalised service provision
   T04M3/42N: . . in networks
   T04M3/42N3: . . . with carrierprovider selection by subscriber
   T04M3/42N5: . . . with number portability
   T04M3/42N7: . . . Number translation services, e.g. premium-rate, freephone or vanity number services
   T04M3/42P: . . in private branch exchanges
   T04M3/42P2: . . . PBX`s with CTI arrangements
   T04M3/42P6: . . . Direct inward dialling
   T04M3/42P8: . . . Remote access to features of PBX or home telephone systems-teleworking in a PBX
   T04M3/42R: . . Location-based services which utilize the location information of a target
   T04M3/42R2: . . . where the information is provided to a monitoring entity such as a potential calling party or a call processing server
   T04M3/42S: . . Presence services providing information on the willingness to communicate or the ability to communicate in terms of media capability or network connectivity
   T04M3/42S2: . . . where the information is provided to a monitoring entity such as a potential calling party or a call processing server
   T04M3/42T: . . Text-based messaging services in telephone networks such as PSTN/ISDN, e.g. User-to-User Signalling or Short Message Service for fixed networks
   T04M3/42Z: . . where the subscribers are hearing-impaired persons, e.g. telephone devices for the deaf
   T04M3/432: . . Arrangements for calling a subscriber at a specific time, e.g. morning call service
   T04M3/436: . . Arrangements for screening incoming calls
   T04M3/436C: . . . based on information specified by the calling party, e.g. priority or subject
   T04M3/44: . . Additional connecting arrangements for providing access to frequently-wanted subscribers, e.g. abbreviated dialling
   T04M3/46: . . Arrangements for calling a number of substations in a predetermined sequence until an answer is obtained
   T04M3/46M: . . . Arrangements for simultaneously calling a number of substations until an answer is obtained
   T04M3/48: . . Arrangements for recalling a calling subscriber when the wanted subscriber ceases to be busy
   T04M3/487: . . Arrangements for providing information services, e.g. recorded voice services, time announcement
   T04M3/487N: . . . Non-interactive information services
   T04M3/487N2: . . . . Intercept announcements
   T04M3/487N4: . . . . Time announcements
   T04M3/487N6: . . . . Advertisement messages
   T04M3/493: . . . Interactive information services, e.g. directory enquiries
   T04M3/493D: . . . . Directory assistance systems
   T04M3/493D2: . . . . . with operator assistance
   T04M3/493D4: . . . . . Connection initiated by DAS system
   T04M3/493S: . . . . with speech interaction
   T04M3/493W: . . . . comprising a voice browser which renders and interprets e.g. VoiceXML
   T04M3/50: . . Centralised arrangements for answering calls; Centralised arrangements for recording messages
   T04M3/51: . . . Centralised call answering arrangements requiring operator intervention
   T04M3/51A: . . . . Secretarial services
   T04M3/51E: . . . . for emergency applications
   T04M3/51H: . . . . with remote located operators
   T04M3/51K: . . . . Operator terminal details
   T04M3/51M: . . . . Details of processing calls and other types of contacts in an unified manner
   T04M3/51N: . . . . Night service systems
   T04M3/51P: . . . . in combination with automated outdialling systems
   T04M3/51R: . . . . in combination with interactive voice response systems or voice portals e.g. as front-ends
   T04M3/51S: . . . . Call or contact centers supervision arrangements
   T04M3/51T: . . . . Call or contact centers with computer-telephony arrangements
   T04M3/51T2: . . . . . Interacting with the Internet
   T04M3/52: . . . . Arrangements for routing dead number calls to operators
   T04M3/523: . . . . with call distribution or queueing
   T04M3/523B: . . . . . with call back arrangements
   T04M3/523D: . . . . . Call distribution algorithms
   T04M3/523D2: . . . . . . Operator skill based call distribution
   T04M3/523D4: . . . . . . Uniform load distribution
   T04M3/523D6: . . . . . . Dependent on call type or called number (DNIS)
   T04M3/523D8: . . . . . . Sequential or circular distribution
   T04M3/523N: . . . . . interconnection arrangements between ACD systems
   T04M3/523T: . . . . . with waiting time or load prediction arrangements
   T04M3/527: . . . Centralised call answering arrangements not requiring operator intervention
   T04M3/53: . . . Centralised arrangements for recording incoming messages, i.e. mailbox systems
   T04M3/533: . . . . Voice mail systems
   T04M3/533B: . . . . . Message originator indirectly connected to message centre, e.g. after detection of busy or absent state of called party
   T04M3/533D: . . . . . Messaging centre selected by message originator
   T04M3/533N: . . . . . Interconnection arrangements between voice mail systems
   T04M3/533R: . . . . . Message receiving aspects
   T04M3/533R1: . . . . . . Message reply
   T04M3/533R2: . . . . . . Message type or category, e.g. priority, indication
   T04M3/533R3: . . . . . . Message preview
   T04M3/533S: . . . . . Message disposing or creating aspects
   T04M3/533S1: . . . . . . Message broadcasting
   T04M3/533S2: . . . . . . Message registering commands or announcements; Greetings
   T04M3/533S2N: . . . . . . . dependent on calling party
   T04M3/537: . . . . Arrangements for indicating the presence of a recorded message
   T04M3/53M: . . . . for recording messages comprising any combination of audio and non-audio components
   T04M3/53M2: . . . . . where the non-audio components are still images or video
   T04M3/53T: . . . . for recording text messages
   T04M3/54: . . Arrangements for diverting calls for one subscriber to another predetermined subscriber
   T04M3/54C: . . . based on information specified by the calling party
   T04M3/54D: . . . Call deflection
   T04M3/54L: . . . with loop avoiding arrangements
   T04M3/54P: . . . in private branch exchanges
   T04M3/54R: . . . with remote control
   T04M3/56: . . Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
   T04M3/56A: . . . by multiplexing
   T04M3/56D: . . . where the conference facilities are distributed
   T04M3/56G: . . . User guidance or feature selection
   T04M3/56G2: . . . . whereby the feature is a sub-conference
   T04M3/56G4: . . . . relating to time schedule aspects
   T04M3/56G6: . . . . relating to a participants right to speak
   T04M3/56M: . . . Multimedia conference systems
   T04M3/56P: . . . audio processing specific to telephonic conferencing, e.g. spatial distribution, mixing of participants
   T04M3/56P2: . . . . [N: using the instant speaker's algorithm
   T04M3/56S: . . . using the instant speaker`s algorithm
   T04M3/58: . . Arrangements for transferring received calls from one subscriber to another; Arrangements affording interim conversations between either the calling or the called party and a third party
   T04M3/60: Semi-automatic systems, i.e. in which the numerical selection of the outgoing line is under the control of an operator
   T04M3/62: . . Keyboard equipment
   T04M3/64: . . Arrangements for signalling the number or class of the calling line to the operator
   T04M5/00: Manual exchanges
   T04M5/02: Constructional details
   T04M5/04: Arrangements for indicating calls or supervising connections for calling or clearing
   T04M5/06: . . affording automatic call distribution
   T04M5/08: using connecting means other than cords
   T04M5/10: using separate plug for each subscriber
   T04M5/12: Ringing or otherwise calling substations
   T04M5/14: Applications of speech amplifiers
   T04M5/16: with means for reducing interference; with means for reducing effects due to line faults
   T04M5/18: Arrangements for signalling the class or number of called or calling line from one exchange to another
   T04M5/20: . . Number-indicating arrangements for incoming lines
   T04M7/00: Interconnection arrangements between switching centres
   T04M7/00B: Interconnection between telephone networks and data networks
   T04M7/00B2: . . where voice calls cross both networks
   T04M7/00B4: . . where voice calls remain entirely in the telephone network
   T04M7/00B5: . . where voice calls remain entirely in the telephone network
   T04M7/00C: Details of application programming interfaces [API] for telephone networks; Arrangements which combine a telephonic communication equipment and a computer, i.e. computer telephony integration [CPI] arrangements
   T04M7/00C2: . . First party call control architectures
   T04M7/00C4: . . Computer Telephony Resource Boards
   T04M7/00C6: . . Details of Application Programming Interfaces
   T04M7/00D: Services and arrangements where telephone services are combined with data services
   T04M7/00D10: . . where the data service is provided by a stream of packets which are rendered in real time by the receiving terminal (
   T04M7/00D12: . . where the data service is a text-based messaging service
   T04M7/00D12D: . . . where the text-based messaging service is an instant messaging service
   T04M7/00D12S: . . . where the text-based messaging service is a Short Message Service
   T04M7/00D14: . . where the data service is a multimedia messaging service
   T04M7/00D16: . . where the data service is an electronic mail service
   T04M7/00D18: . . Services where the data services network provides a telephone service in addition or as an alternative, e.g. for backup purposes, to the telephone service provided by the telephone services network
   T04M7/00D2: . . Collaboration servies where a computer is used for data transfer and the telephone is used for telephonic communication
   T04M7/00D4: . . Click to dial services
   T04M7/00D6: . . Notification or handling of incoming calls by a computer
   T04M7/00D8: . . where the data service is an information service
   T04M7/00M: Networks other than PSTN/ISDN providing telephone service, e.g. voice over internet protocol [VOIP], next generation networks with a packet-switched transport layer
   T04M7/00M10: . . Details of interworking different session control protocols, ie.g. Session Initiation Protocol and H.323
   T04M7/00M12: . . Details of network layer or session control protocols, i.e. protocol modifications with regard to standardised protocols
   T04M7/00M12H: . . . where the session control protocol is H.323
   T04M7/00M12S: . . . where the session control protocol is SIP
   T04M7/00M14: . . Speech codec negotiation
   T04M7/00M16: . . Details of addressing, directories or routing tables
   T04M7/00M18: . . Details of quality control specific to voice transmission, in particular bandwidth availability, latency, jitter or packet loss control
   T04M7/00M18C: . . . Handling of overload; Prevention of congestion
   T04M7/00M2: . . Details of network equipment, e.g. hardware details such as Advanced Telecom Computing Architecture of software details such as object-oriented programming interfaces
   T04M7/00M20: . . Details or registration, admission or status
   T04M7/00M22: . . Security; Fraud detection; Fraud prevention
   T04M7/00M24: . . Network operation, administration, maintenance, or provisioning
   T04M7/00M24M: . . . Network monitoring; Error detection; Error recovery; Network testing
   T04M7/00M24P: . . . Network planning or provisioning
   T04M7/00M26: . . Audio streaming or audio streaming details of combined audio and video streaming
   T04M7/00M4: . . characterised by their non-standardised network architectures
   T04M7/00M4H: . . . where the network comprises a gatekeeper
   T04M7/00M4S: . . . where the network comprises a session initiation protocol server
   T04M7/00M6: . . where the network is a peer-to-peer network
   T04M7/00M8: . . Details of access arrangements to the networks
   T04M7/00M8R: . . . comprising a residential gateway, e.g. those which provide an adapter for POTS or ISDN terminals
   T04M7/00P: in systems involving PBX networks
   T04M7/00S: Signalling arrangements in networks
   T04M7/00T: Trunk circuits
   T04M7/06: using auxiliary connections for control or supervision
   T04M7/06B: . . signalling via IP network
   T04M7/06N: . . where the telephone network is a network other than PSTN/ISDN
   T04M7/06P: . . where the auxiliary connection is via an Internet Protocol network
   T04M7/08: for phantom working
   T04M7/12: for working between exchanges having different types of switching equipment, e.g. power-driven and step by step, decimal and non-decimal
   T04M7/12H: . . where the types of switching equipement comprises PSTN/ISDN equipment and switching equipment of networks other than PSTN/ISDN, e.g. Internet Protocol networks
   T04M7/12H10: . . . Details of gateway equipment
   T04M7/12H10G: . . . . where the switching fabric and the switching logic are decomposed such as in Media Gateway Control
   T04M7/12H12: . . . Interworking of session control protocols
   T04M7/12H12H: . . . . where the session control protocols comprise H.323 and SS7 ]
   T04M7/12H12S: . . . . where the session control protocols comprise SIP and SS7 ]
   T04M7/12H14: . . . Methods and means to improve the telephone service quality, e.g. reservation, prioritisation or admission control
   T04M7/12H16: . . . Details of addressing, directories or routing tables
   T04M7/12H18: . . . Details of finding and selecting a gateway for a particular call
   T04M7/12H2: . . . Details of network access arrangements or protocols
   T04M7/12H20: . . . Details of providing call progress tones or announcements
   T04M7/12H22: . . . Details of dual tone multiple frequency signalling
   T04M7/12H2C: . . . . where a cable TV network is used as an access to the PSTN/ISDN
   T04M7/12H2L: . . . . where the PSTN/ISDN access is used as an access to networks other than PSTN/ISDN
   T04M7/12H4: . . . Details of core network interconnection arrangements
   T04M7/12H4M: . . . . where the packet-switched network is an Internet Protocol Multimedia System-type network
   T04M7/12H4W: . . . . where one of the core networks is a wireless network
   T04M7/12H6: . . . where PSTN/ISDN interconnects two networks other than PSTN/ISDN
   T04M7/12H8: . . . where a network other than PSTN/ISDN interconnects two PSTN/ISDN networks
   T04M7/14: in systems involving main and subordinate switching centres
   T04M7/16: in systems employing carrier frequencies
   T04M9/00: Interconnection arrangements not involving centralised switching
   T04M9/00A: Two-way communication systems between a limited number of parties
   T04M9/00K: with subscriber controlled access to a line, i.e. key telephone systems
   T04M9/00K1: . . Transmission of control signals from or to the key telephone set; signalling equipment at key telephone set, e.g. keyboard or display equipment
   T04M9/00K3: . . with subscriber controlled access to an exchange line
   T04M9/00K3L: . . . Exchange line circuits
   T04M9/00K3R: . . . wherein the key telephone sets are star-connected to a central unit by a limited number of lines
   T04M9/00K5: . . Multiplex systems
   T04M9/02: involving a common line for all parties
   T04M9/02A: . . Multiplex systems
   T04M9/02A1: . . . Time division multiplex systems, e.g. loop systems
   T04M9/02A2: . . . Frequency division multiplex systems
   T04M9/04: involving a separate line for each pair of parties
   T04M9/06: involving combinations of interconnecting lines
   T04M9/08: Two-way loud-speaking telephone systems with means for suppressing echoes or otherwise conditioning for one or other direction of traffic
   T04M9/08C: . . using echo cancellers
   T04M9/08D: . . using digital techniques
   T04M9/08F: . . using different frequency bands for transmitting and receiving paths; using phase shifting arrangements
   T04M9/10: . . with switching of direction of transmission by voice frequency
   T04M11/00: Telephonic communication systems adapted for combination with other electrical systems
   T04M11/00A: with telemetering systems
   T04M11/00A1: . . using recorded signals, e.g. speech
   T04M11/00B: with remote control systems
   T04M11/02: with bell or annunciator systems
   T04M11/02A: . . Paging systems
   T04M11/02B: . . Door telephones
   T04M11/02C: . . Annunciator systems for hospitals
   T04M11/04: with fire, police, burglar, or other alarm systems
   T04M11/04B: . . using recorded signals, e.g. speech
   T04M11/06: Simultaneous speech and telegraphic or other data transmission over the same conductors
   T04M11/06B: . . using different frequency bands for speech and other data
   T04M11/06C: . . Data transmission during pauses in telephone conversation
   T04M11/06D: . . Telephone sets adapted for data transmision
   T04M11/06E: . . using time division multiplex techniques; integrated services digital networks H04Q11/04S
   T04M11/08: adapted for optional reception of entertainment or informative matter
   T04M11/08B: . . using a television receiver, e.g. viewdata system
   T04M11/10: with dictation recording and playback systems
   T04M13/00: Party-line systems
   T04M15/00: Arrangements for metering, time-control or time indication [N: ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
   T04M15/02: Severing connection after predetermined time
   T04M15/04: Recording calls , or communications in printed, perforated or other permanent form
   T04M15/06: . . Recording class or number of calling , i.e. A-party or called party , i.e. B-party
   T04M15/07: Split billing, i.e. both A-party and B-party charged for the communication
   T04M15/08: Metering calls to called party, i.e. B-party charged for the communication
   T04M15/09: Third party charged communications
   T04M15/10: Metering calls from calling party, i.e. A-party charged for the communication
   T04M15/12: . . Discriminative metering, charging or billing
   T04M15/14: . . . according to class of calling party
   T04M15/16: . . . according to connection obtained
   T04M15/18: . . . according to duration of the call, or the communication
   T04M15/20: . . . . Operator`s time recording or indicating arrangements
   T04M15/22: . . . according to time of day
   T04M15/24: . . . Preventing metering of tax-free calls to certain lines, e.g. to fire or ambulance stations
   T04M15/26: . . with a meter or performing charging or billing at the exchange controlled by an operator
   T04M15/28: with meter at substation or with calculation of charges at terminal
   T04M15/30: . . the meter, or calculation of charges not being controlled from an exchange
   T04M15/31: [N: Distributed metering or calculation of charges]
   T04M15/32: Charging, billing or metering arrangements for satellites or concentrators which connect one or more exchange lines with a group of local lines
   T04M15/34: Charging, billing or metering arrangements for private branch exchanges
   T04M15/36: Charging, billing or metering arrangements for party-lines
   T04M15/38: Charging, billing or metering by apparatus other than mechanical step-by-step counter type
   T04M15/39: [N: Arrangements for preventing metering, charging or billing]
   T04M15/41: [N: Billing record details, i.e. parameters, identifiers, structure of call data record [CDR]]
   T04M15/42: [N: Dynamic individual rates per user]
   T04M15/43: [N: Billing software details]
   T04M15/44: [N: Augmented, consolidated or itemized billing statement or bill presentation]
   T04M15/46: [N: Real-time negotiation between users and providers or operators]
   T04M15/47: [N: Fraud detection or prevention means]
   T04M15/48: [N: Secure or trusted billing, e.g. trusted elements or encryption]
   T04M15/49: [N: Connection to several service providers]
   T04M15/50: [N: for cross-charging network operators]
   T04M15/51: [N: for resellers, retailers or service providers]
   T04M15/52: [N: for operator independent billing system]
   T04M15/53: [N: using mediation]
   T04M15/54: [N: for revenue sharing]
   T04M15/55: [N: for hybrid networks]
   T04M15/56: [N: for VoIP communications ]
   T04M15/57: [N: for integrated multimedia messaging subsystem [IMS]]
   T04M15/58: [N: based on statistics of usage or network monitoring]
   T04M15/59: [N: based on real time]
   T04M15/60: [N: based on actual use of network resources]
   T04M15/61: [N: based on the service used]
   T04M15/62: [N: based on trigger specification]
   T04M15/63: [N: based on the content carried by the session initiation protocol [SIP] messages]
   T04M15/64: [N: On-line charging system [OCS]]
   T04M15/65: [N: Off-line charging system]
   T04M15/66: [N: Policy and charging system]
   T04M15/67: [N: Transmitting arrangements for sending billing related information]
   T04M15/68: [N: Payment of value-added services]
   T04M15/70: [N: Administration or customization aspects; Counter-checking correct charges]
   T04M15/705: . . [N: Account settings, e.g. limits or numbers or payment]
   T04M15/71: . . [N: Modifying recharging resources]
   T04M15/715: . . [N: Activating new subscriber or card]
   T04M15/72: . . [N: by the user]
   T04M15/725: . . [N: by the operator]
   T04M15/72A: . . . [N: using the Internet]
   T04M15/72B: . . . [N: using the user's device]
   T04M15/73: . . [N: Validating charges]
   T04M15/735: . . [N: Re-crediting user]
   T04M15/74: . . [N: Backing up]
   T04M15/745: . . [N: Customizing according to wishes of subscriber, e.g. friends or family]
   T04M15/75: . . [N: Account location specifications]
   T04M15/755: . . [N: Account identification]
   T04M15/755A: . . . [N: via service number, e.g. calling card]
   T04M15/755B: . . . [N: by SIM, e.g. smart card account in SCP, SDP or SN]
   T04M15/75A: . . . [N: Card based account, e.g. smart card, SIM card or USIM]
   T04M15/75B: . . . [N: Terminal based account]
   T04M15/75C: . . . [N: Network based account]
   T04M15/76: . . [N: Synchronization of distributed accounts]
   T04M15/765: . . [N: Linked or grouped accounts, e.g. of users or devices]
   T04M15/765A: . . . [N: shared by users]
   T04M15/765B: . . . [N: shared by technologies]
   T04M15/765C: . . . [N: for closed subscriber group [CSG]]
   T04M15/77: . . [N: involving multiple accounts per user]
   T04M15/775: . . [N: Account specifications on parallel communications]
   T04M15/77A: . . . [N: per terminal or location, e.g. mobile device with multiple directory numbers]
   T04M15/77B: . . . [N: per service, e.g. prepay or post-pay]
   T04M15/77C: . . . [N: per technology, e.g. PSTN or wireless]
   T04M15/77D: . . . [N: per card]
   T04M15/78: . . [N: Redistributing amount between accounts]
   T04M15/785: . . [N: Reserving amount on the account]
   T04M15/78A: . . . [N: dynamically]
   T04M15/78B: . . . [N: by user request]
   T04M15/79: . . [N: Virtual purses]
   T04M15/80: [N: Rating or billing plans; Tariff determination aspects]
   T04M15/80A: . . [N: Flat-fee]
   T04M15/80B: . . [N: using class of subscriber]
   T04M15/80C: . . [N: based on quality of service [QoS]]
   T04M15/80D: . . [N: Determining tariff or charge band]
   T04M15/80E: . . [N: based on network load situation]
   T04M15/80F: . . [N: location-dependent, e.g. business or home]
   T04M15/80G: . . [N: Roaming or handoff]
   T04M15/80H: . . [N: Least cost routing]
   T04M15/80H1: . . . [N: Bidding]
   T04M15/80H2: . . . [N: Selecting cheaper transport technology for a given service]
   T04M15/80H3: . . . [N: Selecting least cost route depending on origin or type of service]
   T04M15/80K: . . [N: According to the number of recipients]
   T04M15/80K1: . . . [N: Group, conference or multi-party call]
   T04M15/80K2: . . . [N: Group MMS or SMS; Point-to-multi-point services or broadcast services]
   T04M15/80L: . . [N: involving reduced rates or discounts, e.g. time-of-day reductions or volume discounts]
   T04M15/80M: . . [N: involving increased rates, e.g. spam messaging billing differentiation]
   T04M15/80N: . . [N: Trial service, i.e. free of charge service for trial purposes]
   T04M15/81: [N: Dynamic pricing, e.g. change of tariff during call]
   T04M15/82: [N: Criteria or parameters used for performing billing operations]
   T04M15/82B: . . [N: Time based data metric aspects, e.g. VoIP or circuit switched packet data]
   T04M15/82C: . . [N: Data or packet based]
   T04M15/82D: . . [N: Message based]
   T04M15/82E: . . [N: Session based]
   T04M15/82F: . . [N: Access based]
   T04M15/82G: . . [N: Transaction based]
   T04M15/82H: . . [N: based on the number of used channels, e.g. bundling channels, frequencies or CDMA codes]
   T04M15/82J: . . [N: Unit based]
   T04M15/82K: . . [N: Pulse based]
   T04M15/82L: . . [N: Based on the number of used services, e.g. call forwarding or call barring]
   T04M15/82M: . . [N: Event based]
   T04M15/82P: . . [N: Money or currency based]
   T04M15/82Q: . . [N: Charging for signaling or unsuccessful connection]
   T04M15/83: [N: Notification aspects]
   T04M15/835: . . [N: Time or frequency of notifications, e.g. Advice of Charge [AoC]]
   T04M15/835A: . . . [N: before establishing a communication]
   T04M15/835B: . . . [N: during the communication]
   T04M15/835C: . . . [N: after the end of the communication]
   T04M15/835D: . . . [N: in regular intervals]
   T04M15/835E: . . . [N: Dynamic change of the length or frequency of the notification interval ]
   T04M15/84: . . [N: Types of notifications]
   T04M15/84A: . . . [N: Announcement, e.g. IVR dialogue]
   T04M15/84B: . . . [N: Message, e.g. SMS]
   T04M15/84C: . . . [N: optical, e.g. icon]
   T04M15/84D: . . . [N: Tone, e.g. beeper]
   T04M15/85: . . [N: characterised by the type of condition triggering a notification]
   T04M15/85A: . . . [N: Determined tariff]
   T04M15/85B: . . . [N: Low balance or limit reached]
   T04M15/85C: . . . [N: Calculate maximum communication time or volume]
   T04M15/85D: . . . [N: Available credit]
   T04M15/85E: . . . [N: Successful event]
   T04M15/85F: . . . [N: Unsuccessful event]
   T04M15/85G: . . . [N: Cumulative charges]
   T04M15/85H: . . . [N: Request users acknowledgement prior to use]
   T04M15/86: . . [N: Recipients of the notification]
   T04M15/86A: . . . multiple parties, e.g. multi party AOC
   T04M15/86B: . . . [N: a predetermined or undetermined destination, e.g. notifying a prepaid accounting server of a successful delivery of a service]
   T04M15/88: Provision for limiting connection, or expenditure
   T04M15/88A: . . [N: for continuing the call beyond the limit using allow grace]
   T04M15/88B: . . [N: for continuing the call beyond the limit using an alternative, e.g. alternative account]
   T04M15/88C: . . [N: linked escalation limits, i.e. establish, first or second limit]
   T04M15/88D: . . [N: limit per application]
   T04M15/88E: . . [N: limit per terminal]
   T04M15/88F: . . [N: limit per user or user related number]
   T04M15/88G: . . [N: severing connection after predetermined time or data]
   T04M15/90: using Intelligent Networks [IN] or Advanced Intelligent Networks [AIN]
   T04M15/93: [N: using near field or similar technologies]
   T04M17/00: Prepayment of wireline communication systems, wireless communication systems or telephone systems
   T04M17/00D: Disposable prepaid wireless set
   T04M17/01: [N: Cocot systems, i.e. private ownership of payphones]
   T04M17/02: Coin-freed or check-freed systems
   T04M17/22D: . . with payment method selected interactively
   T04M17/02B: . . Circuit arrangements
   T04M17/02C: . . Constructional features
   T04M17/10: using an account
   T04M17/10A: . . [N: using SIMs (USIMs) or calling cards]
   T04M17/10B: . . [N: using commercial credit or debit cards ]
   T04M17/12: using calling, telephone credit/debit cards
   T04M17/14: using commercial credit/debit cards, e.g. VISA, AMEX
   T04M17/20: with provision for recharging the prepaid account/card
   T04M17/20A: . . [N: automatic recharging with predetermined amount at threshold]
   T04M17/20B: . . [N: selecting interactively a payment method]
   T04M17/20B1: . . . [N: cash-based recharging, i.e. physical input of coins or bank notes]
   T04M17/20C: . . [N: on-line recharging e.g. cashless]
   T04M17/20C1: . . . [N: by calling a service number, e.g. interactive voice response [IVR] or menu]
   T04M17/20C2: . . . [N: by sending a message, e.g. SMS, MMS or EMS]
   T04M17/20C3: . . . [N: using signaling, e.g. USSD, UUS or DTMF]
   T04M17/20C4: . . . [N: using WAP or Internet , i.e. including electronic payment, e.g. e-cash ]
   T04M17/22: with automatic recharging of account/card, e.g. if limit is reached during connection the account is recharged automatically
   T04M17/22A: . . at threshold
   T04M17/22B: . . with predetermined amount
   T04M17/22C: . . with amount selected interactively
   T04M17/24: with on-line recharging of an account or card, e.g. cashless
   T04M17/24A: . . by calling a service number IVR, menu
   T04M17/24B: . . by sending a message, e.g. SMS,MMS, EMS
   T04M17/24C: . . using money , i.e. physical input of coins or bank notes
   T04M17/24D: . . using signalling, e.g. USSD, UUS, DTMF
   T04M17/24E: . . using WAP or Internet , i.e. including electronic payment, e-cash, etc.
   T04M17/25: using a code
   T04M17/25A: . . code input or reading
   T04M17/25A1: . . . from communication terminal display
   T04M17/25A2: . . . from material card, using a magnetic stripe card
   T04M17/25A3: . . . optical code recognition (OCR), e.g. bar code reader
   T04M17/25A4: . . . wireless, e.g. Bluetooth, RFID
   T04M17/25B: . . code reader
   T04M17/25B1: . . . public, e.g. public recharge point
   T04M17/25B2: . . . local at the terminal itself
   T04M17/25C: . . code type
   T04M17/25C1: . . . alphanumeric
   T04M17/25C2: . . . bar code
   T04M17/25C3: . . . pattern, i.e. single or changing sequences of pictures or patterns
   T04M17/25C4: . . . punched holes
   T04M17/25C5: . . . temporarily valid code
   T04M17/25D: . . code management
   T04M17/26: with real-time recharging of account/card, e.g. if limit is reached during connection user is asked if he wants to recharge or not
   T04M17/30: [N: using a code ]
   T04M17/30A: . . [N: Code input or reading ]
   T04M17/30A1: . . . [N: from communication terminal display]
   T04M17/30A2: . . . [N: from material cards, i.e. magnetic stripe card]
   T04M17/30A3: . . . [N: Optical code recognition [OCR], e.g. bar code reader ]
   T04M17/30A4: . . . [N: Wireless codes, e.g. Bluetooth or RFID]
   T04M17/30A5: . . . [N: using public code readers, e.g. public payment or recharge point]
   T04M17/30B: . . [N: Code type e.g. alphanumeric code, bar code.]
   T04M17/30C: . . [N: Code management]
   T04M17/35: [N: Pay as you go ]
   T04M19/00: Current supply arrangements for telephone systems
   T04M19/00B: Current supply source at the exchanger providing current to substations
   T04M19/00B2: . . Arrangements for compensation of the DC flux in line transformers
   T04M19/00B4: . . Feeding arrangements without the use of line transformers
   T04M19/00B6: . . Circuits for increasing the range of current supply source
   T04M19/00B8: . . Using DC/DC converters
   T04M19/02: providing ringing current or supervisory tones
   T04M19/02B: . . by reversing the polarity of the current at the exchange
   T04M19/02C: . . Arrangements for interrupting the ringing current
   T04M19/04: . . Ringing-current generated at substation
   T04M19/04D: . . . Encoding the ringing signal, i.e. providing distinctive or selective ringing capability
   T04M19/04L: . . . with variable loudness of the ringing tone, e.g. variable envelope or amplitude of ring signal
   T04M19/04L2: . . . . according to the level of ambient noise
   T04M19/04P: . . . Call privacy arrangements, e.g. timely inhibiting the ring signal
   T04M19/04T: . . . Vibrating means for incoming calls
   T04M19/04V: . . . Arrangements providing optical indication of the incoming call, e.g. flasher circuits
   T04M19/06: Current supply source at subordinate switching centre charged from main exchange
   T04M19/08: Current supply source at substation
   T04M99/00: Subject matter not provided for in other groups of this subclass
   T04M201/00: Electronic components, circuits, software, systems or apparatus used in telephone systems
   T04M201/02: Diodes
   T04M201/04: Transistors
   T04M201/40S: . . Speaker dependent recognition-speaker recognition
   T04M201/06: Integrated circuits
   T04M201/65: Databases
   T04M201/70: Sorting systems
   T04M201/08: Magnetic elements
   T04M201/10: Logic circuits
   T04M201/12: Counting circuits
   T04M201/14: Delay circuits; Timers
   T04M201/16: Sequence circuits
   T04M201/18: Comparators
   T04M201/20: Scanners
   T04M201/22: Synchronisation circuits
   T04M201/26: A/D convertors
   T04M201/28: S/P convertors
   T04M201/30: PCM
   T04M201/32: Personal computers
   T04M201/34: Microprocessors
   T04M201/36: Memories
   T04M201/38: Displays
   T04M201/39: using speech synthesis
   T04M201/40: using speech recognition
   T04M201/40D: . . involving speaker-dependent recognition
   T04M201/41: using speaker recognition
   T04M201/42: Graphical user interfaces
   T04M201/50: Telephonic communication in combination with video communication
   T04M201/52: Telephonic communication in combination with fax communication
   T04M201/54: Object oriented software
   T04M201/60: Medium conversion
   T04M201/80: line protection circuits such as current or overvoltage protection circuits
   T04M203/00: Aspects of automatic or semi-automatic exchanges
   T04M203/05: related to OAM&P
   T04M203/05A: . . technician dispatch system
   T04M203/05B: . . software update
   T04M203/05C: . . remote terminal provisioning, e.g. of applets
   T04M203/05D: . . loopback testing
   T04M203/05E: . . non-invasive testing, i.e. in operation testing without service interruption
   T04M203/05F: . . distortion monitoring (QoS monitoring H04M3/22F; quality of speech transmission monitoring H04M3/22K)
   T04M203/05G: . . signature devices
   T04M203/10: related to the purpose or context of the telephonic communication
   T04M203/10A: . . Calls without connection establishment for implicit information transfer or as a service trigger
   T04M203/10B: . . Telecontrol
   T04M203/10B1: . . . of avatars
   T04M203/10D: . . Remote administration, e.g. of web servers
   T04M203/10E: . . Televoting
   T04M203/10F: . . Financial transactions and auctions, e.g. bidding (auctioneering devices in packet switching networks H04L12/18B)
   T04M203/10G: . . Shopping and product ordering
   T04M203/10H: . . Game playing
   T04M203/10I: . . Telemetering, e.g. transmission of ambient measurements
   T04M203/10J: . . for hotels
   T04M203/10K: . . Fixed mobile conversion
   T04M203/15: related to dial plan and call routing
   T04M203/15A: . . Temporary dial plan
   T04M203/15B: . . Functional or symbolic dial plan such as license plate numbers
   T04M203/15C: . . On-line status dependent routing
   T04M203/15D: . . Call-type dependent routing (route determination based on the nature of the carried application in packet switching networks H04L45/3006)
   T04M203/20: related to features of supplementary services
   T04M203/20A: . . Temporarily overriding a service configuration
   T04M203/20B: . . Service processing based on information specified by a party before or during a call, e.g. information, tone or routing selection
   T04M203/20C: . . Call initiation by network rather than by subscriber
   T04M203/20D: . . Path replacement
   T04M203/20E: . . Live party detection
   T04M203/20F: . . Call handling or answering restrictions, e.g. specified by the calling party
   T04M203/20G: . . Call context notifications
   T04M203/20H: . . Group features, e.g. closed user group
   T04M203/20I: . . Broadcasting (broadcasting in packet switching networks H04L12/18)
   T04M203/20J: . . Line restrictions
   T04M203/20K: . . Language aspects
   T04M203/20L: . . Call type detection of indication, e.g. voice or fax, mobile of fixed, PSTN or IP
   T04M203/20M: . . Schedules, e.g. personal calendars
   T04M203/20N: . . Call queuing apart from automatic call distribution
   T04M203/20O: . . Confirmation by serviced party
   T04M203/20P: . . Call or conference reconnect, e.g. resulting from isdn terminal portability
   T04M203/20Q: . . Proximity
   T04M203/25: related to user interface aspects of the telephonic communication service
   T04M203/25A: . . where a voice mode or a visual mode can be used interchangeably
   T04M203/25A1: . . . where a voice mode is enhanced with visual information
   T04M203/25A2: . . . where a visual mode is used instead of a voice mode
   T04M203/25A2A: . . . . where the visual mode comprises menus
   T04M203/25E: . . comprising a personalized user interface
   T04M203/25F: . . comprising a service specific user interface
   T04M203/25G: . . remote control of substation user interface for telephonic services, e.g. by ISDN stimulus, ADSI, wireless telephony application WTA, MExE or BREW
   T04M203/25H: . . Service state indications
   T04M203/30: related to audio recordings in general
   T04M203/30A: . . Management of recordings
   T04M203/30B: . . Marking
   T04M203/30C: . . Recording playback features, e.g. increased speed
   T04M203/30D: . . Prerecordings to be used during a voice call
   T04M203/30E: . . Personal name recording
   T04M203/35: related to information services provided via a voice call
   T04M203/35A: . . Pre or post-call/conference information service
   T04M203/35B: . . In-call/conference information service
   T04M203/35C: . . where the information comprises non-audio but is provided over voice channels (protocols for multimedia information services per se H04L65/00)
   T04M203/35D: . . Reverse directory service
   T04M203/35E: . . Interactive dialogue design tools, features or methods
   T04M203/35F: . . Phonecasting
   T04M203/35G: . . Autocues for dialog assistance
   T04M203/35H: . . Digital rights management
   T04M203/35I: . . Augmented reality
   T04M203/40: related to call centers
   T04M203/40A: . . Performance feedback
   T04M203/40B: . . Agent or workforce management
   T04M203/40C: . . Agent or workforce training
   T04M203/40D: . . Collaboration among agents
   T04M203/40E: . . Competitive bidding for work items
   T04M203/40F: . . Rerouting calls between call centers
   T04M203/40G: . . Call center operated for multiple customers
   T04M203/40H: . . Customer-specific call routing plans
   T04M203/45: related to voicemail messaging
   T04M203/45A: . . Unified messaging with single point of access to voicemail and other mail or messaging systems (unified messaging in packet switching networks H04L51/36)
   T04M203/45B: . . Attachments to voicemail (messages including annexed information, e.g. Attachments, in packet switching networks H04L51/08)
   T04M203/45C: . . Voicemail attached to other kind of message
   T04M203/45D: . . Voicemail combined with text-based messaging
   T04M203/45E: . . Message forwarding (selective message forwarding in packet switching networks H04L51/14)
   T04M203/45F: . . Sender-side editing
   T04M203/45G: . . Voicemail monitoring during recording
   T04M203/45H: . . Voicemail RSS
   T04M203/45I: . . Sending message identifiers instead of whole messages (notification of incoming messages in packet-switching networks H04L51/24)
   T04M203/45J: . . Calling party redirected to message centre on called party request
   T04M203/50: related to audio conference
   T04M203/50A: . . Adding a party to an existing conference (conducting a computer conference, e.g. admission detection H04L12/18D2)
   T04M203/50B: . . Initiating a conference during a two-party conversation, i.e. three-party-service or three-way-call (computer conference organisation arrangements H04L12/18D1)
   T04M203/50C: . . Dropping a party from a conference (conducting a computer conference, e.g. admission detection H04L12/18D2)
   T04M203/50D: . . using conference for collection of feedback
   T04M203/50E: . . Selection of bridge/multipoint control unit (network arrangements for computer conference optimisation H04L12/18D3)
   T04M203/50F: . . Meet-me conference, i.e. participants dial-in
   T04M203/50G: . . Centrally initiated conference, i.e. Conference server dials participants (computer conference organisation arrangements H04L12/18D1)
   T04M203/50H: . . Multiple active speakers (conducting a computer conference, e.g. Admission detection H04L12/18D2)
   T04M203/50I: . . Inform conference party of participants, e.g. of change of participants (conducting a computer conference, e.g. admission detection, H04L12/18D2)
   T04M203/50J: . . Microphone arrays
   T04M203/55: related to network data storage and management
   T04M203/55A: . . Call history (recording a computer conference H04L12/18D4)
   T04M203/55B: . . Call annotations
   T04M203/55C: . . Data upload
   T04M203/55D: . . Data synchronization
   T04M203/55E: . . Statistics, e.g. about subscribers but not being call statistics
   T04M203/55E1: . . . Statistical analysis and interpretation
   T04M203/55G: . . Portable profiles
   T04M203/55H: . . Databases
   T04M203/55I: . . Sorting systems
   T04M203/60: related to security aspects in telephonic communication systems (network architectures or network communication protocols for network security H04L63/00)
   T04M203/60A: . . Personal information, e.g. profiles or personal directories being only provided to authorised persons
   T04M203/60B: . . Subscriber or terminal logon/logoff
   T04M203/60C: . . Fraud preventions
   T04M203/60D: . . Anti virus measures
   T04M203/60E: . . Identity confirmation
   T04M203/60F: . . Biometric subscriber identification
   T04M203/60G: . . Authentication using cards
   T04M203/60H: . . Authentication using challenger response
   T04M203/60I: . . Service authorization mechanisms
   T04M203/60J: . . Secret communication
   T04M203/65: related to applications where calls are combined with other types of communication
   T04M203/65A: . . Text message transmission triggered by call (automatic reactions in messaging within packet-switching networks H04L51/02)
   T04M203/65B: . . Call initiation triggered by text message
   T04M203/65C: . . Pre, in or post-call message
   T04M203/65D: . . Combination of telephone service and social networking (messaging within social networks H04L51/32)
   T04M203/65E: . . Combination of voice and fax calls
   T04M203/65F: . . Combination of voice calls and paging
   T04M207/00: Type of exchange or network, i.e. telephonic medium, in which the telephonic communication takes place
   T04M207/02: PBX exchanges
   T04M207/04: PBX or KTS networks
   T04M207/06: KTS systems
   T04M207/08: ISDN systems
   T04M207/10: TDM exchanges
   T04M207/12: intelligent networks
   T04M207/14: cable networks
   T04M207/16: data networks
   T04M207/16T: . . Internet
   T04M207/18: wireless networks
   T04M207/18A: . . wireless circuit-switched
   T04M207/18B: . . wireless packet-switched
   T04M207/18C: . . combining circuit and packet-switched, e.g. GPRS
   T04M207/20: hybrid systems
   T04M207/20D: . . composed of PSTN and data network, e.g. the Internet
   T04M207/20M: . . composed of PSTN and wireless network
   T04M207/30: third party service providers
   T04M207/35: virtual private networks
   T04M207/40: terminals with audio html browser
   T04M207/45: public-private interworking, e.g. centrex
   T04M215/00: Metering arrangements; Time controlling arrangements; Time indicating arrangements
   T04M215/01: Details of billing arrangements
   T04M215/12: Billing aspects relating to the party charged for the communication
   T04M215/12A: . . A-party charged
   T04M215/12B: . . B-party charged
   T04M215/12R: . . Reverse billing
   T04M215/12S: . . Split billing, i.e. both A- and B-party charged
   T04M215/12T: . . Third party charged
   T04M215/01A: . . Augmented, consolidated or itemised billing statement, e.g. additional billing information, bill presentation, layout, format, e-mail, fax, printout, itemised bill per service or per account, cumulative billing, consolidated billing
   T04M215/01C: . . Customization according to wishes of subscriber, e.g. customer preferences, friends and family, selecting services or billing options, Personal Communication Systems (PCS)
   T04M215/01D: . . Dynamic pricing, e.g. change of tariff during call
   T04M215/01E: . . Provision for limiting expenditure, e.g. limit on call expenses or account
   T04M215/01E1: . . . Continue allow grace, e.g. accept negative balance
   T04M215/01E2: . . . Continue alternative, i.e. alternative account to continue use
   T04M215/01E3: . . . Linked escalation limits, establish, first or second limit
   T04M215/01E4: . . . Limit per application
   T04M215/01E5: . . . Limit per terminal
   T04M215/01E6: . . . Limit per user or user related number
   T04M215/01E7: . . . Release upon reaching limit
   T04M215/01F: . . Fraud detection or prevention means
   T04M215/01G: . . General billing plans, rate plans, e.g. charge rates, numbering plans, rate centers, customer accounts
   T04M215/01H: . . Secure and trusted billing, e.g. trusted elements, encryption, digital signature, codes or double check mechanisms to secure billing calculation and information
   T04M215/01I: . . Billing using Intelligent Networks (IN) or Advanced Intelligent Networks (AIN)
   T04M215/01K: . . Billing record, e.g. Call Data Record (CDR), Toll Ticket(TT), Automatic Message Accounting (AMA), Call Line Identifier (CLI), details, i.e. parameters, identifiers, structure
   T04M215/01K1: . . . including processing instructions or price lists in record
   T04M215/01L: . . On line or real-time flexible customization or negotiation according to wishes of subscriber
   T04M215/01M: . . Mediation, i.e. device or program to reformat CDRS from one or more switches in order to adapt to one or more billing programs formats
   T04M215/01N: . . Billing arrangements using internet
   T04M215/01Q: . . On-line real-time billing, able to see billing information while in communication, e.g. via the internet
   T04M215/01R: . . involving reduced rates or discounts, e.g. time-of-day reductions, volume discounts, cell discounts, group billing, frequent calling destination(s) or user history list
   T04M215/01S: . . Network monitoring; statistics on usage on called/calling number
   T04M215/01U: . . Sponsored, subsidised calls via advertising, e.g. calling cards with ads or connecting to special ads, free calling time by purchasing goods
   T04M215/01V: . . Payment of value-added services, mainly when their charges are added on the telephone bill, e.g. payment of non-telecom services, e-commerce, on-line banking
   T04M215/14: Billing aspects relating to the actual charge
   T04M215/14C: . . Non communication time, i.e. billing the user for the actual time used by the service, not for the time awaiting responses due to network problems; Billing the user when there is a satisfied QoS
   T04M215/14D: . . Data billing, e.g. wherein the user is charged based only on the time he receives data
   T04M215/20: Technology dependant metering
   T04M215/20A: . . Fixed telephone network, e.g. POTS, ISDN
   T04M215/20B: . . Fixed data network, e.g. PDN, ATM, B-ISDN
   T04M215/20C: . . VoIP; Packet switched telephony
   T04M215/20D: . . Wireless network, e.g. GSM, PCS, TACS
   T04M215/20F: . . WLAN
   T04M215/20G: . . UMTS; GPRS
   T04M215/20H: . . Hybrid network
   T04M215/20J: . . In based PPS
   T04M215/20K: . . CDMA, i.e. Code Division Multiple Access
   T04M215/20L: . . Service node based PPS
   T04M215/20M: . . Multipoint, e.g. messaging, broadcast or group SMS
   T04M215/20N: . . IMS, i.e. Integrated Multimedia messaging Subsystem
   T04M215/20O: . . xDSL Modem lines, e.g. HDSL or ADSL
   T04M215/20P: . . Push to talk
   T04M215/22: Bandwidth or usage-sensitve billing
   T04M215/24: Voice over IP billing
   T04M215/26: Data billing charged as a voice call, i.e. based on time or unit charging
   T04M215/28: SMS billing
   T04M215/32: Involving wireless systems
   T04M215/34: Roaming
   T04M215/42: Least cost routing, i.e. provision for selecting the lowest cost tariff
   T04M215/44: Charging/billing arrangements for connection made over different networks, e.g. wireless and PSTN, ISDN, etc.
   T04M215/46: Connection to several service providers
   T04M215/48: Sending information over a non-traffic network channel or another connection than the one actually used, e.g. signalling, D-channel, data and voice
   T04M215/52: Interconnection, inter-exchange, reseller billing, billing agreements between different operators, e.g. billing identifier added on the CDR in order to cross charge the other operator, inter-operator accounting, reconciliation, bill directly resellers customers
   T04M215/54: Resellers-retail or service providers billing, e.g. agreements with telephone service operator, activation, charging/recharging of accounts
   T04M215/56: On line or real-time flexible agreements between service providers and telecoms operators
   T04M215/62: Called party billing, e.g. reverse billing, freephone, collect call, 0800 or 0900
   T04M215/64: Split billing, sharing the cost of calls, e.g. between calling and called parties
   T04M215/66: Third party billing, i.e. third party can also be the predetermined telephone line of the caller if he is calling from another telephone set
   T04M215/68: Billing calls completely to the calling party, except POTS, e.g. charge on caller`s choice service
   T04M215/70: Administration aspects, modify settings or limits or counter-check correct charges
   T04M215/70A: . . Account settings, e.g. users, terminals, limits, numbers or payment
   T04M215/70B: . . Modify recharging resources, e.g. banking, credit, debit or phone account
   T04M215/70C: . . Activate new subscriber or card
   T04M215/70D: . . Administer via user
   T04M215/70D1: . . . Using Internet or WAP
   T04M215/70D2: . . . Using the phone
   T04M215/70F: . . Administer via operator
   T04M215/70G: . . Validate charges
   T04M215/70G1: . . . Re-credit user, e.g. repay user with the amount or free time after finding an error in calculating the charges
   T04M215/70H: . . Backup
   T04M215/72: Account specifications
   T04M215/72A: . . Account location
   T04M215/72A1: . . . Card based, e.g. smart card, SIM card or USIM)
   T04M215/72A2: . . . Terminal based
   T04M215/72A3: . . . Network based
   T04M215/72B: . . Account identification
   T04M215/72B1: . . . via service number, e.g. calling card
   T04M215/72B2: . . . by SIM, e.g. smart card account in SCP, SDP or SN
   T04M215/72C: . . Synchronisation of distributed accounts
   T04M215/72D: . . Linked accounts
   T04M215/72D1: . . . Shared by users, e.g. group accounts or one account for different users
   T04M215/72D2: . . . Shared by technologies, e.g. one account for different access technologies
   T04M215/72D3: . . . Multiple accounts per user
   T04M215/72D3A: . . . . per terminal or location; Mobile with multiple directory numbers
   T04M215/72D3B: . . . . per service, e.g. prepay and post-pay
   T04M215/72D3C: . . . . per technology, e.g. PSTN or wireless
   T04M215/72D3D: . . . . per card
   T04M215/72E: . . Account specifications on parallel communications
   T04M215/72E1: . . . Redistribute amount between accounts
   T04M215/72E1A: . . . . Dynamically
   T04M215/72E1B: . . . . by user request
   T04M215/72E2: . . . Reserve amount , e.g. according to estimated costs for a typical communication duration or according to the estimated volume to be transferred
   T04M215/74: Rating aspects, e.g. rating parameters or tariff determination apects
   T04M215/74A: . . class of subscriber
   T04M215/74B: . . QoS
   T04M215/74C: . . Determine tariff or charge band
   T04M215/74D: . . Load situation, e.g. Current network load, traffic load or available resources
   T04M215/74E: . . Location dependent, e.g. Bussiness or home
   T04M215/74F: . . Roaming
   T04M215/74G: . . Least cost routing, e.g. Automatic or manual, call by call or by preselection
   T04M215/74G1: . . . Biding
   T04M215/74G2: . . . Select transport technology for a given service, e.g. use for data connection WLAN rather than GSM/UMTS/GPRS or use company's communication network rather than a public network
   T04M215/74G3: . . . Select route depending on origin or type of service, e.g. route TDMA voice calls differently than VoIP calls
   T04M215/74H: . . According to the number of recipients
   T04M215/74H1: . . . Group call; Conference call; Multi Party Call
   T04M215/74H2: . . . Group MMS or SMS; Point-to-multi-point services, broadcast services
   T04M215/78: Metric aspects
   T04M215/78A: . . Time based
   T04M215/78B: . . Time based data, e.g. VoIP or circuit switched packet data
   T04M215/78C: . . Data or packet based
   T04M215/78D: . . Message based
   T04M215/78E: . . Session based
   T04M215/78F: . . Access based
   T04M215/78G: . . Transaction based
   T04M215/78H: . . Based on the number of used channels, e.g. bundling channels or frequencies or CDMA codes
   T04M215/78I: . . Unit based
   T04M215/78J: . . Pulse based
   T04M215/78K: . . Based on the number of used services, e.g. call forwarding or call barring
   T04M215/78L: . . Event based
   T04M215/78M: . . Apply cheapest or best package, e.g. selection among available tariffs or packages (least cost routing T04M215/42)
   T04M215/78N: . . Money or currency based
   T04M215/81: Notifying aspects, e.g. notifications or displays to the user
   T04M215/81A: . . Time or frequency of notification
   T04M215/81A1: . . . before establishing a communication
   T04M215/81A2: . . . during the communication
   T04M215/81A3: . . . after the end of the communication
   T04M215/81A4: . . . in regular intervals
   T04M215/81A5: . . . Dynamic change of the length/frequency of the length of the notification interval, e.g. depending on the remaining available prepaid credit
   T04M215/81B: . . Type of notification
   T04M215/81B1: . . . Announcement, e.g. IVR dialogue, intelligent peripheral or switch
   T04M215/81B2: . . . Message, e.g. alphanumeric text, SMS, MMS, EMS or www-based messaging service
   T04M215/81B3: . . . Optical, e.g. flashing indication of a lamp, icon, soft-key or symbol
   T04M215/81B4: . . . Tone, e.g. beeper, sound, wave
   T04M215/81C: . . Notification when a specific condition, service or event is met
   T04M215/81C1: . . . Determined tariff
   T04M215/81C2: . . . Low balance or limit reached
   T04M215/81C3: . . . Calculate maximum communication time or volume
   T04M215/81C4: . . . Available credit
   T04M215/81C5: . . . Successful event, e.g. successful recharge or delivery of a service
   T04M215/81C6: . . . Unsuccessful event, e.g. service rejected due to low credit
   T04M215/81C7: . . . Cumulative charges
   T04M215/81C8: . . . Request users acknowledgement prior to use
   T04M215/81E: . . Send to
   T04M215/81E1: . . . multiple parties, e.g. multi party AOC
   T04M215/81E2: . . . a predetermined or undetermined destination, e.g. notifying a prepaid accounting server of a successful delivery of a service, a connection, or chargeable content to a mobile terminal
   T04M215/82: Advice-of-Charge (AOC), i.e. notify subscriber of charges/cumulative charge; meter at the substation
   T04M215/82A: . . Select from different charging routines or algorithms or formulas
   T04M215/92: Autonomous calculations of charges in terminal, i.e. meter not controlled from exchange
   T04M215/96: Distributed calculation of charges, e.g. in different nodes like for mobiles between HLR and VLR, or between the terminal and the billing function
   T04M242/00: Special services or facilities
   T04M242/02: Broadcasting
   T04M242/04: for emergency applications
   T04M242/50: Authentication
   T04M242/51: . . speaker identification
   T04M242/52: . . biometric (other than voice) authentication
   T04M242/53: . . using cards
   T04M242/06: Lines and connections with preferential service
   T04M242/08: menus for interactive user guidance
   T04M242/10: Secret communications
   T04M242/12: Language recognition, selection or translation arrangements
   T04M242/14: with services dependent on location (where the service is an information service T04M242/15; services independent of location H04M3/42M)
   T04M242/15: Information service where the information is dependent on the location of the subscriber
   T04M242/16: with computer telephone integration
   T04M242/18: Automated outdialling systems
   T04M242/20: Televoting service
   T04M242/22: Automatic class or number identification arrangements
   T04M242/24: Detection or indication of type terminal or call, (e.g. fax, broadband)
   T04M242/26: Paging systems
   T04M242/28: Services making use of subscriber schedule information
   T04M242/30: Determination of the location of a subscriber
   T04M242/40: Data synchronization between user terminals and central server
   T04M242/40B: . . Incremental backup
   T04M250/00: Details of telephonic subscriber devices
   T04M250/02: including a Bluetooth interface
   T04M250/04: including near field communication means, e.g. RFID
   T04M250/06: including a wireless LAN interface
   T04M250/08: home cordless telephone systems using the DECT standard
   T04M250/10: including a GPS signal receiver
   T04M250/12: including a sensor for measuring a physical value, e.g. temperature or motion (telephones including GPS signal receivers T04M250/10)
   T04M250/14: including a card reading device
   T04M250/16: including more than one display unit
   T04M250/18: including more than one keyboard unit
   T04M250/20: including a rotatable camera
   T04M250/22: including a touch pad, a touch sensor or a touch detector (digitizers for touch screens G06F3/041)
   T04M250/52: including functional features of a camera (constructional features concerning the integration of cameras in portable phones H04M1/02A14C)
   T04M250/54: including functional features of a projector or beamer module assembly (constructional features concerning the integration of projectors in portable phones H04M1/02A14F)
   T04M250/56: including a user help function
   T04M250/58: including a multilanguage function
   T04M250/60: logging of communication history, e.g. outgoing or incoming calls, missed calls, messages or URLs (logging of telephone numbers H04M1/56, H04M1/57)
   T04M250/62: user interface aspects of conference calls
   T04M250/64: file transfer between terminals (download of applications H04M1/725F1A; transfer of messages, e.g. SMS, e-mail or MMS H04M1/725F1M)
   T04M250/66: user interface aspects for indicating selection options for a communication line
   T04M250/68: with means for recording information, e.g. telephone number during a conversation (recording of telephone conversations H04M1/656)
   T04M250/70: methods for entering alphabetical characters, e.g. multi-tap or dictionary disambiguation (methods for entering alphabetical characters per se G06F3/023M8)
   T04M250/72: user manuals of subscriber equipments, e.g. of mobile phones
   T04M250/74: with voice recognition means (voice activated dialling H04M1/27A; voice recognition algorithms G10L15/00)