发明名称 |
PROCEDIMIENTO PARA EL INTERCAMBIO DE SENALES DE MANDO, ME- DIANTE EL EMPLEO DE UN SISTEMA,EN EL TRAFICO DE ENLACE EN REDES TELEFONICAS,EN PARTICULAR EN REDES DE APARATOS SUPLE- TORIOS CON TRANSMISION EN SUBINSTALACIONES AUTOMATICAS |
摘要 |
<p>The method comprises the transmission of main and secondary signals, the address (NK2 to NKn) of the called-back telephone station being essentially transmitted to the main system when a connection is set up between a main system (HA) and a dial-up sub-system (UA) and when a call-back is initiated in the dial-up sub-system, and being stored in a special memory in the main system. 50-Hz AC signals and audio-frequency signals in particular are used as pulse signals. <IMAGE></p> |
申请公布号 |
ES499895(D0) |
申请公布日期 |
1981.12.16 |
申请号 |
ES19950004998 |
申请日期 |
1981.02.27 |
申请人 |
SIEMENS AKTIENGESELLSCHAFT |
发明人 |
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分类号 |
H04M7/10;H04M7/14;H04Q1/44;H04Q3/62;(IPC1-7):04M3/58;04M7/10 |
主分类号 |
H04M7/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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