发明名称 |
OPTICAL FIBRE COMMUNICATIONS SYSTEM |
摘要 |
An optical fibre communications system includes an exchange (E) and a plurality of subscriber lines (1). The exchange (E) provides a plurality of services in different subcarrier frequencies (6, 8, 9, 1 0). Each subscriber line (I) is provided with terminal apparatus (5) operable at different subcarrier frequencies, and a control (11) a t the exchange (E) tunes the terminal apparatus to transmit and/or receive on a particular frequency in response to a request. The request may be a signal from the terminal apparatus (5), or an incoming service request addressed to the particular terminal apparatus.
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申请公布号 |
CA2070815(C) |
申请公布日期 |
1998.08.18 |
申请号 |
CA19902070815 |
申请日期 |
1990.12.07 |
申请人 |
BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY |
发明人 |
COOPER, ANTHONY JAMES;FENNING, SIMON CHARLES;ROSHER, PAUL ADRIAN;REEVE, MICHAEL HARRY;BICKERS, LAWRENCE |
分类号 |
H04M11/00;H04J14/00;H04J14/02;H04Q3/42;H04Q3/52;(IPC1-7):H04J14/02;H04B10/20 |
主分类号 |
H04M11/00 |
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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