[cisco-voip] CUCM 8.5 and Skype connect

[Clifford McGlamry]

> It it still possible to attach the SIP trunk directly?

Qualified yes.  You can, but it means you have to have public addressing on the CUCM cluster so the traffic can get there.  This is where a CUBE can really help you out.  You can do address hiding, sort of like NAT but for SIP.  It hides your internal address space from the provider and solves a ton of other problems.  CUBE also terminates the media stream and builds a new one to the internal network so that you don't end up with routing issues associated with voice payload to endpoints.

You may or may not experience these things depending on your setups, but if you have almost any requirements for security in the network, the direct connect model creates security issues.

Cliff


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