[cisco-voip] Codec and WAN

[Akaal singh]

Thanks alot Matthew,

If I do use MGCP I am planning to use MGCP Fallback in case the WAN goes
down. Would it be best to configure the MGCP gateways just to point to the
local Call Manager and  redundancy will be the MGCP Fallback.






On Feb 18, 2008 8:22 PM, Matthew Saskin <matt at saskin.net> wrote:

> 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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> >
> >
>
>
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