Patent · US Active

Method for soft switch call control and soft switch device using the same

US7656863B2 · kind B2 · utility

1Cited by

2References

8Claims

0Family size

Assignee

ALCATEL · FR

Inventors

Sihai Wang · Shanghai, CN
Zhikun Wan · Shanghai, CN
Weihong Chen · 安丰镇, CN
Hong Shen · Omaha, US
Jie Weng · Lo Wu, CN

Key dates

Filing date	Sep 14, 2005
Grant date	Feb 2, 2010
Priority date	—
Expiry date	Feb 29, 2028

Classification

Technology area (CPC H)Electricity
CPC primaryH04Q3/0025
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.