[cisco-voip] Call Control / Phone Registration Distance

[VoIP Guy]

There are no explicit constraints in the SRND but it does mention from here
http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/srnd/8x/models.html#wp1043663
:

Best Practices for the Centralized Call Processing Model

Follow these guidelines and best practices when implementing multisite
centralized call processing deployments:

•Minimize delay between Unified CM and remote locations to reduce voice
cut-through delays (also known as clipping).

Keepalive timers between CUCM and an IP Phone are in the orders of seconds,
so it shouldn’t be an issue and hence there is no specific requirement about
latency.

Take into account that in a previous life we implemented CUCM over a
satellite connection and apart from delay for dialtone, etc, it worked on
the whole, well.



> *Sent:* 20 August 2010 21:15
> *To:* cisco-voip at puck.nether.net
> *Subject:* [cisco-voip] Call Control / Phone Registration Distance
> *From:* cisco-voip-bounces at puck.nether.net [mailto:
> cisco-voip-bounces at puck.nether.net] *On Behalf Of *H, Tim
>
>
>
> All,
>
>
>
> Does Cisco give a limitation on Distance/Latency on how far away from a
> CUCM cluster you can be before they don’t support phone registration/call
> control?
>
>
>
> I haven’t been able to find documentation, but if someone knows where to
> find that, it would be very helpful to me.
>
>
>
> Thanks,
>
>
>
> *Tim ***
>
>
>
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