发明名称 |
Communications network. |
摘要 |
<p>A communications network in which a central switching node (70) has at least two sets of both input ports (52) and output port (56) coupled to respective sets of transmitters (Tij) and receivers (Rij) by passive optical networks (54) and (58) and demultiplexers (52) and multiplexers (59). The transmitters (Tij) are tunable so that each can be selectively coupled to one of the input ports (52). The receivers (Rij) are also tunable so the output ports (56) can be selectively coupled to the one or more of the receivers (Rij). Alternatively, the demultiplexers (55) and multiplexers (59) can be tunable. This devolves some of the switching function outside the central switching node (50) thereby reducing the component count.</p> |
申请公布号 |
EP0382431(A1) |
申请公布日期 |
1990.08.16 |
申请号 |
EP19900301128 |
申请日期 |
1990.02.02 |
申请人 |
BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY |
发明人 |
HILL, ALAN MICHAEL;PAYNE, DAVID BRIAN |
分类号 |
H04M3/00;H04Q3/52;H04Q11/00;H04Q11/02 |
主分类号 |
H04M3/00 |
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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