Session initiation protocol retransmission method

Details Session initiation protocol retransmission method Session initiation protocol retransmission method

2006-04-18

2006-04-18

Hsu, Alpus (Department: 2665)

Multiplex communications

Communication over free space

Repeater

C370S335000, C370S342000, C370S352000, C455S517000, C455S011100, C709S227000

Reexamination Certificate

active

07031273

ABSTRACT:
For a network server (35) communicating with a wireless unit (10) via a Session Initiation Protocol, a retransmission method (50) first sets a timer based upon a time likely for a mobile unit to respond (54). Then the network server waits for a response (56). When the timer set for the kind of mobile unit being used expires (64), a retransmit of the original SIP request takes place (68). Optionally, modes for waiting may include a linear mode (72) and an exponential mode (74).

REFERENCES:
patent: 2002/0061762 (2002-05-01), Maggenti et al.
patent: 2003/0133408 (2003-07-01), Cheng et al.
patent: 2004/0132452 (2004-07-01), Lee
patent: 2004/0230659 (2004-11-01), Chase
patent: 2004/0255039 (2004-12-01), Honeisen

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