发明名称 |
Virtual private line service. |
摘要 |
<p>An effective private line service between predetermined stations (101,103) is provided by means of a public switched network (110). When a calling station (101) goes off-hook, a non-dial able routing number (RN) is identified, either (178) in a database held in the local switch (120) or (176) in a central software-defined network control point (130). This routing number is used to set up a connection between the two stations.</p> |
申请公布号 |
EP0425203(A2) |
申请公布日期 |
1991.05.02 |
申请号 |
EP19900311490 |
申请日期 |
1990.10.19 |
申请人 |
AMERICAN TELEPHONE AND TELEGRAPH COMPANY |
发明人 |
KIRSCH, LARRY WILLIAM;REDBERG, DAVID ALLEN |
分类号 |
H04M3/42;H04Q3/00;H04Q3/58 |
主分类号 |
H04M3/42 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|