[cisco-voip] CallManager 6.1 BE to CME 3.0 Trunk

[Jason Aarons (US)]

I have  3-4 smaller sites running CME 3.0 and a larger site with
CallManager 6.1 BE. 

 

I was thinking of setting up SIP trunks between them with specific
4-digit extension route patterns.

 

Any caveats (eg CME 3.0  version upgrade) with this?  

 

They have a lot of firewalls and I thought that H323 trunks might have
issues with the firewalls.

 

Should be Device Trunk in CallManager and SIPv2 dial-peers in CME 3.0.

 

I assume this would work but never tried it, search on CCO didn't find
this exact setup.

 




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