Ip telephone exchange and ip telephone terminal

Details Ip telephone exchange and ip telephone terminal Ip telephone exchange and ip telephone terminal

H - Electricity

04

L

H04L 12/66 (2006.01) H04M 3/00 (2006.01) H04M 11/06 (2006.01) H04Q 3/64 (2006.01)

Patent

CA 2532633

An IP telephone exchange connects an IP telephone terminal and a non-IP telephone terminal to enable conversation between therebetween. The IP telephone exchange includes a communication control section, a voice channel, a control channel and a voice channel management section. The communication control section conducts data communications with the IP and non-IP telephone terminals. The voice channel interconverts between non-IP voice data and IP voice data. The control channel communicates a call control signal with the IP and non-IP telephone terminals. The voice channel management section detects presence or absence of an available voice channel when communication connection is established between the IP and non-IP telephone terminals based on the call control signal. The voice channel management section notifies a calling telephone terminal and a called telephone terminal that no available voice channel exists, if the voice channel management section detects no available voice channel.

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