DTMF tone generation in a media gateway

Details DTMF tone generation in a media gateway DTMF tone generation in a media gateway

2003-05-16

2009-12-08

Nguyen, Quynh H (Department: 2614)

Telephonic communications

Centralized switching system

Switching controlled in response to called station...

C370S352000, C370S356000

Reexamination Certificate

active

07630488

ABSTRACT:
A system and method for generating Dual Tone Multi-Frequency (DTMF) tones in the media gateway of a Universal Mobile Telecommunications System (UMTS) network. The method includes receiving a DTMF signal in a media gateway controller, where the DTMF signal can be a stop tone request, or a start tone request, sending the DTMF signal from the media gateway controller to the media gateway, monitoring the status of a set of timers, where the set of timers includes a minimum tone duration timer, an inter tone timer, and a maximum tone duration timer, and responding to the received DTMF signal, said status of said timers, or a queued request. The system includes a media gateway, a plurality of timers within the media gateway, a media gateway controller, a finite state machine within the media gateway, where the finite state machine includes the following states: No Tone, Play Tone, Queue Stop Request, Inter Tone Timing, Queue Start Request, and Ready to Stop Tone.

REFERENCES:
patent: 5818930 (1998-10-01), Mark
patent: 6088437 (2000-07-01), Amick
patent: 6151514 (2000-11-01), Cheng et al.
patent: 6259691 (2001-07-01), Naudus
patent: 6487196 (2002-11-01), Verthein et al.
patent: 6526026 (2003-02-01), Menon
patent: 6594256 (2003-07-01), Koide
patent: 6771741 (2004-08-01), Kliland
patent: 6785267 (2004-08-01), Knappe
patent: 7079500 (2006-07-01), Menon
patent: 7133521 (2006-11-01), Jabri et al.
patent: 2002/0176542 (2002-11-01), Lazarus et al.
patent: 2003/0021394 (2003-01-01), Krack
patent: 2003/0108020 (2003-06-01), Garcia-Martin
patent: 2003/0137952 (2003-07-01), Menon

Affiliated with

Also associated with

Rating

DTMF tone generation in a media gateway does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with DTMF tone generation in a media gateway, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and DTMF tone generation in a media gateway will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4112172