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2010/10/12 18:03:31

Gateway

the gateway - the device connected to IP network and the PSTN and performing switching between them. The gateway performs the following basic functions in IP-telefonii network: reply to call of the subscriber from PBX/PSTN (PSTN); connection establishment with the called party in PBX/PSTN (PSTN); connection establishment with the remote gateway; coding, compression and packaging of voice and facsimile information in RTP/UDP/IP packets and also its inverse transformation. The gateway can be used for calls through IP network from phone on phone, from the computer on phone or from phone on the computer.