[cisco-voip] Codec and WAN

[Matthew Saskin]

The protocols you have listed are primarily used for gateway 
communication - the signaling within the cluster happens automatically 
using a proprietary protocol.  As long as the cluster nodes are within 
40ms of each other, you're fine on that front.

As far as gateway protocols, there are plenty of pros and cons to using 
H323, SIP, or MGCP.  It depends significantly on what your requirements are.

-matt

Akaal singh wrote:
> Hello,
>
> Just wanted to know which Codec would work best if I have a call 
> manager Cluster where the pub and Sub are connected over a WAN. I was 
> thinking H323 or SIP, I don't think MGCP will be as good over the WAN. 
> Looking for some advices.
>
> Thank you
> Akaal
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