IP telephony system, VoIP terminal, and method and program...

Details IP telephony system, VoIP terminal, and method and program... IP telephony system, VoIP terminal, and method and program...

2004-10-21

2010-02-23

Al Aubaidi, Rasha S (Department: 2614)

Multiplex communications

Pathfinding or routing

Combined circuit switching and packet switching

C370S516000

Reexamination Certificate

active

07668155

ABSTRACT:
A hold sound and audible sound data memory area of a memory holds a plurality of types of hold sound and audible sound data which are stored in a payload format of an RTP packet. An RTP/hold sound or audible sound switching function writes one of an RTP packet and the hold sound or audible sound data into a DSP. A hold sound or audible sound data selection function selects a hold sound or audible sound to be reproduced from the plurality of types of hold sound and audible sound data. A hold sound or audible sound intermittence control function restricts the input of the hold sound or audible sound data into the DSP, to control the intermittence of the hold sound or audible sound. A hold sound or audible sound periodic reproduction function periodically inputs the hold sound or audible sound data into the DSP. The DSP converts the RTP packet such as voice or the hold sound or audible sound data into a voice signal of a PCM signal.

REFERENCES:
patent: 2000-059471 (2000-02-01), None
patent: 2001-211235 (2001-08-01), None
patent: 2002-209025 (2002-07-01), None
patent: 2002-351465 (2002-12-01), None
patent: WO 03/053029 (2003-06-01), None
Japanese Office Action dated Jul. 22, 2008 (with English translation of the relevant parts).

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