Voice communications system

Multiplex communications – Pathfinding or routing – Combined circuit switching and packet switching

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

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

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Voice communications system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Voice communications system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Voice communications system will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4223343

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.