Communication terminal device and method of controlling same

Details Communication terminal device and method of controlling same Communication terminal device and method of controlling same

2007-11-27

2007-11-27

Moe, Aung S. (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Communication

C358S001160, C358S441000, C358S434000, C379S209010, C379S207050, C379S207100, C370S236000, C370S242000, C709S228000, C709S229000

Reexamination Certificate

active

10373808

ABSTRACT:
A communication terminal device which comprises an SIP call control unit that performs call control by using an SIP (Session Initiation Protocol), a recognition unit that recognizes that a calling has become an error according to a response signal sent back from a called party terminal after making the call according to the SIP call control procedure, a redial management unit that manages a redial interval to make a redial when the calling has become an error, and a redial control unit that performs redial control according to redial information when the calling has become an error and the response signal contains the redial information.

REFERENCES:
patent: 4994926 (1991-02-01), Gordon et al.
patent: 5392131 (1995-02-01), Umeno
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patent: 6393502 (2002-05-01), Meyer et al.
patent: 6771639 (2004-08-01), Holden
patent: 2002/0187777 (2002-12-01), Osterhout et al.
patent: A 62-274952 (1987-11-01), None
patent: A-3-274961 (1991-12-01), None
patent: A-5-14669 (1993-01-01), None
patent: A-5-191501 (1993-07-01), None
patent: A-5-252305 (1993-09-01), None
patent: A-2001-251424 (2001-09-01), None
RFC 3261, SIP: Session Initiation Protocol, Jun. 2002.

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