Interconnection arrangements between switching centres

HELECTRICITY H04Electric communication H04MTELEPHONIC COMMUNICATION

H04M7/00Interconnection arrangements between switching centres

H04M7/0003Interconnection between telephone networks and data networks H04M7/0006where voice calls cross both networks H04M7/0009where voice calls remain entirely in the telephone network H04M7/0012Details of application programming interfaces [API] for telephone networks; Arrangements which combine a telephonic communication equipment and a computer H04M7/0015First party call control architectures H04M7/0018Computer Telephony Resource Boards H04M7/0021Details of Application Programming Interfaces H04M7/0024Services and arrangements where telephone services are combined with data services H04M7/0027Collaboration services where a computer is used for data transfer and the telephone is used for telephonic communication H04M7/003Click to dial services H04M7/0033Notification or handling of incoming calls by a computer H04M7/0036where the data service is an information service H04M7/0039where the data service is provided by a stream of packets which are rendered in real time by the receiving terminal H04M7/0042where the data service is a text-based messaging service H04M7/0045where the text-based messaging service is an instant messaging service H04M7/0048where the text-based messaging service is a Short Message Service H04M7/0051where the data service is a multimedia messaging service H04M7/0054where the data service is an electronic mail service H04M7/0057Services where the data services network provides a telephone service in addition or as an alternative H04M7/006Networks other than PSTN/ISDN providing telephone service H04M7/0063where the network is a peer-to-peer network H04M7/0066Details of access arrangements to the networks H04M7/0069comprising a residential gateway H04M7/0072Speech codec negotiation H04M7/0075Details of addressing, directories or routing tables H04M7/0078Security; Fraud detection; Fraud prevention H04M7/0081Network operation, administration, maintenance, or provisioning H04M7/0084Network monitoring; Error detection; Error recovery; Network testing H04M7/0087Network planning or provisioning H04M7/009in systems involving PBX or KTS networks H04M7/0093signalling arrangements in networks H04M7/0096Trunk circuits H04M7/06using auxiliary connections for control or supervision H04M7/063where the telephone network is a network other than PSTN/ISDN H04M7/066where the auxiliary connection is via an Internet Protocol network H04M7/08for phantom working H04M7/12for working between exchanges having different types of switching equipment, e.g. power-driven and step by step, decimal and non-decimal, circuit-switched and packet-switched H04M7/1205where the types of switching equipement comprises PSTN/ISDN equipment and switching equipment of networks other than PSTN/ISDN H04M7/121Details of network access arrangements or protocols H04M7/1215where a cable TV network is used as an access to the PSTN/ISDN H04M7/122where the PSTN/ISDN access is used as an access to networks other than PSTN/ISDN H04M7/1225Details of core network interconnection arrangements H04M7/123where the packet-switched network is an Internet Protocol Multimedia System-type network H04M7/1235where one of the core networks is a wireless network H04M7/124where PSTN/ISDN interconnects two networks other than PSTN/ISDN H04M7/1245where a network other than PSTN/ISDN interconnects two PSTN/ISDN networks H04M7/125Details of gateway equipment H04M7/1255where the switching fabric and the switching logic are decomposed such as in Media Gateway Control H04M7/126Interworking of session control protocols H04M7/1265where the session control protocols comprise H.323 and SS7 H04M7/127where the session control protocols comprise SIP and SS7 H04M7/1275Methods and means to improve the telephone service quality H04M7/128Details of addressing, directories or routing tables H04M7/1285Details of finding and selecting a gateway for a particular call H04M7/129Details of providing call progress tones or announcements H04M7/1295Details of dual tone multiple frequency signalling H04M7/14in systems involving main and subordinate switching centres H04M7/16in systems employing carrier frequencies