WAN中,PBX和demarc是一回事吗?

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常彬

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Aug 9, 2007, 6:37:20 AM8/9/07
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呵呵,下面是摘抄的名词解释:
PBX (private branch exchange)
A digital or analog telephone switchboard located on the subscriber
premises and used to connect private and public telephone networks.

Demarcation (or demarc)
The juncture at which the CPE ends and the local loop portion of the
service begins.It ofen occurs at a telecommunication closet.

这样说是不是更确切:PBX是demarc的其中一种?

Kang Liu

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Aug 9, 2007, 8:22:07 AM8/9/07
to bjutn...@googlegroups.com
PBX一般专指小型电话交换机,比如公司里面用的那种一个外线号码很多分机的设备就是PBX的一种。
demarc我不太了解指的是什么。看原文解释应该是用户端设备与运营商设备之间的接口。


在 07-8-9,常彬<changb...@gmail.com> 写道:


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