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癫痫病的饮食应当留神哪些
by lmnopq127978
Yesterday at 07:09 PM
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#11807 - 06/15/04 09:53 PM Can anyone help me to understand A (pbx)private Branch Exchange
Disorder Offline
Junior Member

Registered: 06/14/04
Posts: 1
Loc: Los Angeles
Hello,
Well if anyone out there has any spare time to help me out I would greatly Appreciate it. I only have two questions
1: What's a private Branch Exchange (what's it do where it's used)
2: What is a trunk.
Well thank you for time and again thank you. Till then....
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#11808 - 06/15/04 11:19 PM Re: Can anyone help me to understand A (pbx)private Branch Exchange
§intå× Offline


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Registered: 12/03/02
Posts: 3255
Loc: Maryland
Short for private branch exchange, a private telephone network used within an enterprise. Users of the PBX share a certain number of outside lines for making telephone calls external to the PBX.

http://www.webopedia.com/TERM/P/PBX.html


A communications channel between two points. It usually refers to large-bandwidth telephone channels between switching centers that handle many simultaneous voice and data signals.

http://www.webopedia.com/TERM/t/trunk.html
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