Method and apparatus for telecommunications using internet...

Details Method and apparatus for telecommunications using internet... Method and apparatus for telecommunications using internet...

2006-12-26

2006-12-26

Duong, Frank (Department: 2616)

Multiplex communications

Pathfinding or routing

Combined circuit switching and packet switching

C370S395500, C370S521000

Reexamination Certificate

active

07154881

ABSTRACT:
In a wireless packet switching telecommunications network, voice services are provided by having a compressor/decompressor in each mobile station to provide each voice packet with a compressed header. Voice data and signalling data are sent separately and in different data formats to the air interface. The compressed header may be an M bit and a cyclically reset timeclick_number, which is decompressed by use of a wallclock which counts reset cycles to reinstate the voice packet headers. Alternatively, RTP agents are provided at the compression and decompression points, and voice packets are sent without headers over a “high quality” network such as a frame relay or ATM network. Compression state of a voice packet header can be established by sending call setup information over an out-of-band channel between compression points in a mobile station and in the network.

REFERENCES:
patent: 6466585 (2002-10-01), Le
Casner et al, Compressing IP/UDP/RTP Headers for Low-Speed Serial Links, RFC 2508, pp. 1-24, Feb. 1999.

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