[cisco-voip] Codec and WAN

[Matthew Saskin]

Not at all - you can sucessfully have MGCP gateways well past 150+ms 
away from the CallManager cluster.  I'm not sure if Cisco has an 
explicit limit on this, just speaking from experience here.

-matt

Akaal singh wrote:
> The Cluster nodes should be within the 40ms but some time this may not 
> be the case down to Traffic or other issues. I was asking about the 
> protocols because I know that MGCP is a Client server based protocol 
> and  most of the configuration is done on the Call manager  if the 
> nodes  are not within the 40ms will that be a problem using MGCP.
>
> As using H323 or SIP I can get the Gateway to do more of the 
> signalling. I hope you understand what I am trying to get at.
>
>
>
> On Feb 18, 2008 7:39 PM, Matthew Saskin <matt at saskin.net 
> <mailto:matt at saskin.net>> wrote:
>
>     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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