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Net130.com
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E1通信的基础知识
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http://www.net130.com 发布日期:2004-11-18
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浏览次数:
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出处:摘自互联网
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补充-光端机用法:
光纤---光端机--同轴线---G703转v35转换器--同步串口
或
BNC-DB15,BNC-RJ45 --- CE1
CE1/PRI Cables
Cisco Systems makes four cables for the CE1/PRI modules. All four have DB-15 connectors on the CE1/PRI end and either BNC, DB-15, Twinax, or RJ-45 connectors on the network end.
下列各图显示了 CE1/PRI 的接口线缆:
图1. E1 Interface Cable for 75-Ohm, Unbalanced Connections with BNC Connectors
图2. E1 Interface Cable for 120-Ohm, Balanced Connections with DB-15 Connectors
图3. E1 Interface Cable for 120-Ohm, Balanced Connections with Twinax Connectors
图4. E1 Interface Cable for 120-Ohm, Balanced Connections with an RJ-45 Connector
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