This Recommendation covers the requirements of equipment that interconnects GSTN networks at the TDM interface and networks optimized for the transport of IP. Such equipment is referred to in this Recommendation as a TIGIN gateway. This Recommendation describes functionality such as voiceband coding and echo control, transport interfaces, signalling interfaces, and OA&M interfaces of these devices. Support is provided for calls from IP to GSTN, GSTN to IP, IP to IP and GSTN to GSTN. While such TIGIN gateways may support multimedia traffic and Remote Access Server (RAS) functionality, this Recommendation covers only voice, voiceband data, facsimile, narrow-band digital data, address and signalling tones. Support of other media such as digital data and video are outside the scope of this Recommendation.
ITU-T Y.1451.1 SPANISH-2004 history
2004ITU-T Y.1451.1 SPANISH-2004 Functionality and interface specifications for GSTN transport network equipment for interconnecting GSTN and IP networks