Low speed modem transmission over packet networks

Details Low speed modem transmission over packet networks Low speed modem transmission over packet networks

2005-11-15

2005-11-15

Sam, Phirin (Department: 2661)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S282000, C370S293000, C370S395520, C370S466000, C370S467000, C375S222000

Reexamination Certificate

active

06965600

ABSTRACT:
A modem relay provides a local interface to the a modem on both ends of a call, demodulates the full duplex data stream, packetizes the bits for transport over an IP network, and remodulates the data stream at the remote end. The modem relay negotiates a best supported rate and modulation. If no common rate and modulation is supported by the modems at each end of the communication, the modem relay components will establish independent connections to the modems at each end and transmit information across the packet network. The modem data stream can also be transported in a redundant fashion, which allows for seamless error recovery in the event of single or double packet loss events. Since the data stream can be completely recovered after packet loss, the remote modem is able to recreate the local modem's transmission exactly.

REFERENCES:
patent: 4569062 (1986-02-01), Dellande et al.
patent: 5267263 (1993-11-01), Feezel et al.
patent: 5592538 (1997-01-01), Kosowsky et al.
patent: 5625677 (1997-04-01), Feiertag et al.
patent: 5627829 (1997-05-01), Gleeson et al.
patent: 5673252 (1997-09-01), Johnson et al.
patent: 5790641 (1998-08-01), Chan et al.
patent: 5822524 (1998-10-01), Chen et al.
patent: 5831561 (1998-11-01), Cai et al.
patent: 5912896 (1999-06-01), Beighe et al.
patent: 6016425 (2000-01-01), Bannister
patent: 6023470 (2000-02-01), Lee et al.
patent: 6108706 (2000-08-01), Birdwell et al.
patent: 6347075 (2002-02-01), Barzegar et al.
patent: 6434169 (2002-08-01), Verreault
patent: 6459708 (2002-10-01), Cox et al.
patent: 6504838 (2003-01-01), Kwan
patent: 6628625 (2003-09-01), Birdwell et al.
patent: 6654348 (2003-11-01), Doty, II et al.
patent: 6667986 (2003-12-01), Sullivan et al.
patent: 6728753 (2004-04-01), Parasnis et al.
patent: 2002/0162047 (2002-10-01), Peters et al.
patent: 1 047 231 (2000-10-01), None
Procedures for Real-Time Group 3 Facsimile Communication Over IP Networks, ITU-T Recommendation T.38, Jun. 1998 pp. 1-30, (International Telecommunication Union).

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