Voice and fax over IP call establishment in a communications...

Telephonic communications – Telephone line or system combined with diverse electrical... – Having transmission of a digital message signal over a...

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C379S093140, C379S100150, C358S001150, C358S434000

Reexamination Certificate

active

07907708

ABSTRACT:
In a communications network, voice and facsimile calls are established between first and second and second terminals via first and second media gateways in a communications network. Each gateway is capable of autonomous transitioning between a voice over IP (VoIP) call mode and a facsimile over IP (FoIP) call mode. A bearer path for the call is established via a media gateway controller. During call setup, the media gateways exchange confirmation of each gateway's capability to perform autonomous transitioning between VoIP and FoIP call modes. The call is established as a VoIP call, and, on a determination by the media gateways that a facsimile call is required, each media gateway autonomously transitions between its VoIP and FoIP call modes without the intervention of the media gateway controller.

REFERENCES:
patent: 6075847 (2000-06-01), Leung
patent: 6314112 (2001-11-01), Hsu et al.
patent: 6512790 (2003-01-01), Sourani
patent: 7305676 (2007-12-01), Boll et al.
patent: 2001/0022784 (2001-09-01), Menon et al.
patent: 2003/0002476 (2003-01-01), Chung et al.
patent: 2003/0123097 (2003-07-01), Fruth
patent: 2004/0125791 (2004-07-01), Hoffmann
Parsons, “Real-time Facsimile (T.38)- image/t38 MIME Sub-type Registration,” RFC 3362, pp. 1-5 (Aug. 2002).
“H.248.1 Call Establishment Procedures,” Annex E, pp. 1-12 (Mar. 2002).
Schulzrinne et al., “RTP Payload for DTMF Digits, Telephony Tones and Telephony Signals,” RFC 2833, pp. 1-30 (May 2000).
Handley et al., “SDP: Session Description Protocol,” RFC 2327, pp. 1-42 (Apr. 1998).

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 and fax over IP call establishment in a communications... 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 and fax over IP call establishment in a communications..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Voice and fax over IP call establishment in a communications... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2703190

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