Voice communications system

Details Voice communications system Voice communications system

2005-06-24

2010-06-08

Shah, Chirag G (Department: 2477)

Multiplex communications

Pathfinding or routing

Combined circuit switching and packet switching

Reexamination Certificate

active

07733849

ABSTRACT:
Voice communications apparatus is connected to a general subscriber telephone set or a broadband telephone set, to communicate over the public switched telephone network. The apparatus includes a filter converting signals such as to satisfy signal conditions prescribed for the telephone network. The apparatus also includes a terminal class determiner for determining the class of the telephone set connected, and a circuit for changing at least the sampling frequency at which the analog signals from the telephone set are sampled. This establishes high quality in broadband voice communications. The terminal class determiner may automatically determine the class of the telephone set at any timing of a call sequence by detecting a band component of the signals from the telephone set, a predetermined frequency of a signal intermittently transmitted from the telephone set or the characteristics of the telephone set.

REFERENCES:
patent: 6141341 (2000-10-01), Jones et al.
patent: 6445695 (2002-09-01), Christie, IV
patent: 6748078 (2004-06-01), Posthuma
patent: 6876648 (2005-04-01), Lee
patent: 2001/0012287 (2001-08-01), Miyazaki et al.
patent: 2001/0024436 (2001-09-01), Barraclough et al.
patent: 2002/0007273 (2002-01-01), Chen
patent: 2002/0101854 (2002-08-01), Siegrist et al.
patent: 1234712 (1999-11-01), None
patent: 0 952 746 (1999-10-01), None
patent: 11-331371 (1999-11-01), None
patent: 2000-201218 (2000-07-01), None
patent: WO-01/71994 (2001-09-01), None

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