发明专利
JP2004274790A Setting of telephone communication connection of broadband communication network
审中-公开
基本信息:
- 专利标题： Setting of telephone communication connection of broadband communication network
- 申请号：JP2004135989 申请日：2004-04-30
- 公开(公告)号：JP2004274790A 公开(公告)日：2004-09-30
- 发明人： HILLER THOMAS L , PHELAN JAMES J , ZOLA MEYER J
- 申请人： At & T Corp , エイ・ティ・アンド・ティ・コーポレーションAt&T Corp.
- 专利权人： At & T Corp,エイ・ティ・アンド・ティ・コーポレーションAt&T Corp.
- 当前专利权人： At & T Corp,エイ・ティ・アンド・ティ・コーポレーションＡｔ＆Ｔ Ｃｏｒｐ．
- 优先权： US97278692 1992-11-06; US97278792 1992-11-06; US97278892 1992-11-06; US97278992 1992-11-06
- 主分类号： H04L
- IPC分类号： H04L20060101 ; H04L12/64 ; H04L12/70 ; H04L12/933 ; H04L12/935 ; H04L12/937 ; H04M3/00 ; H04Q3/00 ; H04Q11/04 ; H04L12/56
摘要：
PROBLEM TO BE SOLVED: To provide a configuration for establishing a telephone communication connection through the use of a broadband network and a switching system. SOLUTION: According to the principle of the present invention, a pulse code modulation (PCM) signal flow is converted into an asynchronous transfer mode (ATM) cell so as to switch and transmit it across a telephone communication network. Each cell carries one PCM data sample of different voice connections up to 48 kinds. These voice connections are selected, because they have a destination common to the PCM data flow. Although these cells are transmitted via an ATM virtual circuit, while each circuit transmits one cell every 125μs. An advantage is that the ATM transmission system is interfaced with the PCM system without causing considerable delays, and without requiring additional buffers. Another advantage is that a new voice channel can be established, using an empty slot of an existing virtual channel in most of times. The present invention can be used for a large-scale switching system that comprises smaller-scale systems which are densely interconnected, or for implementation of clusters. COPYRIGHT: (C)2004,JPO&NCIPI