CUCM 7.1, SIP Trunk and Voipbuster

Unanswered Question
Dec 29th, 2009

Hi there,

I was wondering if I can use CUCM 7.1 connecting through a SIP Trunk to Voipbuster or anyother SIP provider.




I have this problem too.
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Jonathan Schulenberg Tue, 12/29/2009 - 12:54

This question has been asked on the forum many times. Please search the forum before opening a thread.

Short answer is: maybe (baring the need for authentication, NAT, and other issues); however, it is NOT recommended. This is what CUBE was designed for. UCM is not intended to be externally facing.

ysanadiga01 Tue, 12/29/2009 - 14:11

I think that I did search on the Forum before putting this question. All those questions were related to the older versions of the CUCM and not 7.1.3. I've installed CUCM 7.1.3 at home and was testing if I can connect my home lab to Voipbuster for testing purposes.




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