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电信专业的几个名词

Chinese translation: 如下

06:36 Nov 2, 2013
English to Chinese translations [PRO]
IT (Information Technology) / general
English term or phrase: 电信专业的几个名词
c. Trunk 4W E&M

d. Trunk CO

e. Trunk 2Mbps R2-MFC

f. Trunk 2Mbps ISDN/ Primary

请问这里的E&M和CO都是指什么？
Trunk是指干线吗？
Sheldon Fu
China
Local time: 22:15
Chinese translation:如下
Explanation:
E&M：earth & magneto, or ear & mouth. See http://en.wikipedia.org/wiki/E_and_M_signaling

CO: Central Office

Trunk：中继线OR干线
a. a telephone line or channel between two central offices or switching devices.
b. a telegraph line or channel between two main or central offices.
Selected response from:

Jacky Ye
China
Local time: 22:15
Grading comment
4 KudoZ points were awarded for this answer



Summary of answers provided
4 +1如下
Jacky Ye


  

Answers


43 mins   confidence: Answerer confidence 4/5Answerer confidence 4/5 peer agreement (net): +1
如下


Explanation:
E&M：earth & magneto, or ear & mouth. See http://en.wikipedia.org/wiki/E_and_M_signaling

CO: Central Office

Trunk：中继线OR干线
a. a telephone line or channel between two central offices or switching devices.
b. a telegraph line or channel between two main or central offices.


Jacky Ye
China
Local time: 22:15
Specializes in field
Native speaker of: Native in ChineseChinese
PRO pts in category: 332

Peer comments on this answer (and responses from the answerer)
agree  Yan Yuliang: trunk一般都是中继的意思。
5 hrs
  -> Thank you!
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