Method for soft switch call control and soft switch device...

Details Method for soft switch call control and soft switch device... Method for soft switch call control and soft switch device...

2005-09-14

2010-02-02

Hong, Harry S (Department: 2614)

Multiplex communications

Pathfinding or routing

Combined circuit switching and packet switching

C370S356000, C370S401000, C379S221080, C379S230000

Reexamination Certificate

active

07656863

ABSTRACT:
A method for soft switch call control and a soft switch device therefore are provided. The soft switch device acquires an initial address message (IAM) at a calling side, analyzes information of the calling party and the called party based on the acquired initial address message (IAM), and informs the media gateways to create a context and to add TDM semi-permanent physical terminations of time slots corresponding to the calling party and the called party into the context when the calling party and the called party are controlled by the same media gateway. Thus, it can implement a local loop of TDM voice, reduce IP loop of RTP streams and efficiently reduces network resources such as steps for digital signal processing, echo elimination and etc.

REFERENCES:
patent: 6873858 (2005-03-01), Aguilar et al.
patent: 6910074 (2005-06-01), Amin et al.
patent: 2007/0153766 (2007-07-01), Bienn et al.
Noh Jeong Min: “Re: [Megaco] Hairpin Connection Doubts” IETF Mail Archive, Nov. 28, 2002, pp. 1-2, XP002439385.
Cuervo F, et al.: “Megaco Protocol” IETF Internet Draft, Apr. 16, 1999, XP015022845.

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