John Ruban
Joined: 09 Jul 2013 Posts: 10
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Posted: Tue Jul 09, 2013 10:49 am Post subject: extensions |
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company’s central switching office. It controls all your incoming and outgoing calls, connecting outside callers with inside extension lines and internal extensions with each other. A PBX allows you to have fewer outside lines than extensions because it is safe to assume that not all extensions _________________ free internet calls |
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