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What all needed for VoIP

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usmcjohn

Technical User
Jul 19, 2005
45
US
This may seem like a wierd question, but what all is needed to make a working voice over IP system from an Option-81.

I have leader and follower signalling server, 2 MC32 cards, 2 5520s, phones.

What else is required besides licenses?
 
Probably referring to Nortel/Avaya ERS 5520 stackable PoE switch.
 
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