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最佳答案G.703的接口叫做E1，顾名思义，就是接口的名称，区别于RJ45以太网的。
2M口是对于这个端口速率的一种称呼，区别于百兆以太网口。
现在一般都表达差不多的意思了，提到都会理解一样意思的。
2M口是对于这个端口速率的一种称呼，区别于百兆以太网口。
现在一般都表达差不多的意思了，提到都会理解一样意思的。
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回答时间：2011-11-18 15:12
其他答案 ( 4 条 )
2M设备上有G.703,V35,RJ45等各种接口
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118.250.10.* | 2012-3-2 12:14
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Sri Lanka has a very strong batting side with two batsmen above the 400 mark runs in the entire tournament. India on the other hand has Sachin Tendulkar who appears to be in perfect form and also would be playing the match in his home town, Mumbai at the Wankhede Stadium. India also has Zaheer Khan who is the second highest wicket taker in the tournament closely followed by the Sri Lankan, Muralitharan plus dressesplus dresses . Both these teams have reached the World Cup finals for the third time and have won only once. Both the teams won it the first time they reached the finals. All in all beach cover ups dressbeach cover ups dress white party dresswhite party dress , the ICC World Cup 2011 finals promises to be a treat for cricket lovers with both the teams being equally competitive. The finalists have showed consistent performance throughout the tournament which makes it difficult to predict the result. Who is mightier The Lions or The Tigers we'd know on the 2nd of April!!! We have junior bride dressesjunior bride dresses G703接口包括2M和64K的，E1和2M没啥区别。
2M是相对于64K等速率角度的描述。
标准中相关描述为：
Amendments of clauses 4, 9, 10, 11 with the inclusion of output return loss requirements for the 64 kbit/s (codirectional), 2048, 8448, 34 368 kbit/s interfaces.
E1是相对于E0等名称角度的描述，也直接可以对应到速率。
标准中相关描述为：
标准中相关描述为：
Amendments of clauses 4, 9, 10, 11 with the inclusion of output return loss requirements for the 64 kbit/s (codirectional), 2048, 8448, 34 368 kbit/s interfaces.
E1是相对于E0等名称角度的描述，也直接可以对应到速率。
标准中相关描述为：
|
– Insertion of names of hierarchical interfaces (E0, E11, E21 etc.) into the headings of the corresponding clauses. |
2M是通俗叫法，E1的速率是2.048M，
因为另外一个标准T1速率是1.5M，
因为另外一个标准T1速率是1.5M，
