发明名称 |
MULTIFUNCTIONAL SCANNER-COUNTER CIRCUIT |
摘要 |
<p>This specification discloses a telephone system suitable for use as a private branch exchange and includes a switching network for establishing call connections between station line circuits, trunks and registers under electronic common control. Each register comprises control circuitry for switching a multifunctional counter circuit into a plurality of configurations on a single call for initially scanning stations to detect call service requests, then counting dialed pulses transmitted from a calling station, and subsequently scanning stations on a callback operation to identify the calling station.</p> |
申请公布号 |
CA963134(A) |
申请公布日期 |
1975.02.18 |
申请号 |
CA19710130291 |
申请日期 |
1971.12.16 |
申请人 |
WESTERN ELECTRIC COMPANY, INCORPORATED |
发明人 |
DELLECKER, RAYMOND W.;GREASON, WILLIAM W. (III);HAYDEN, PAUL R.;WEINER, DAVID W. |
分类号 |
H04Q3/54 |
主分类号 |
H04Q3/54 |
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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