发明名称 |
Apparatus for direct line switching |
摘要 |
Apparatus is described for use in centrally controlled telecommunication switching systems having direct line service facilities. A direct line key, via a direct line repeater, is directly connected to a specified direct line station. Through operation of an exchange key, e.g., at a switchboard, the link connecting process to the direct line station is begun using a connecting path which is ready for seizure.
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申请公布号 |
US4058684(A) |
申请公布日期 |
1977.11.15 |
申请号 |
US19750625868 |
申请日期 |
1975.10.28 |
申请人 |
SIEMENS AKTIENGESELLSCHAFT |
发明人 |
NAGEL, ARTUR;WISSAERT, ROLAND |
分类号 |
H04Q3/62;(IPC1-7):H04M3/42 |
主分类号 |
H04Q3/62 |
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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