H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 12/66 (2006.01) H04M 7/00 (2006.01) H04M 11/06 (2006.01) H04Q 3/42 (2006.01)
Patent
CA 2394413
In an IP telephone system 10 enabling a voice telephone communication between a pair of subscriber's talking terminals 100 and 110 respectively connected to a pair of private branch exchanges 200 and 210 interconnected through an IP network 400, by utilizing VoIP gateway functions respectively provided in the pair of private branch exchanges 200 and 210 and by action of a voice conversion based on a voice CODEC, when the subscriber's talking terminal 100 of a calling party side dispatches a telephone calling, the subscriber's talking terminal 100 of the calling party side sends a voice CODEC change designating access code and a voice CODEC designating code to the private branch exchange 200 of the calling party side and the private branch exchange 210 of a called party side. Each private branch exchange discriminates the access code supplied from the subscriber's talking terminal of the calling party side, and registers a voice CODEC designated by the voice CODEC designating code, into a voice converter 204, 214 provided in each private branch exchange.
Corporation Nec
G. Ronald Bell & Associates
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