2010年8月26日 星期四

* telephone exchange
* telephone switch
Both telephone exchange or telephone switch are a system of electronic components that connects telephone calls. This process was manually before, nowadays it is an automatically process.

* Inside Plant
Telecomunication equipments that located in the telecompany building, such as DSLAM. In CATV, possible called CMTS.

* Outside Plant
Telecomunication equipments that located between main distribution frame (MDF) and User End instrument (or called Customer Premises Equipment).

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