发明名称 |
Circuit arrangement for small PABX systems in which dialling signal transmission is initiated for external connections in the form of audio-frequency code signals by a central device assigned to the subscriber stations |
摘要 |
Published without abstract.
|
申请公布号 |
DE3131403(A1) |
申请公布日期 |
1983.03.31 |
申请号 |
DE19813131403 |
申请日期 |
1981.08.07 |
申请人 |
SIEMENS AG |
发明人 |
BLOSSFELDT,DIETER,DIPL.-ING. |
分类号 |
H04M1/515;(IPC1-7):H04M3/42 |
主分类号 |
H04M1/515 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|