[cisco-voip] Call Control / Phone Registration Distance

[Nate VanMaren]

Wes,

My understanding of G.114 is only for the audio path.  I think this question is more for the control path.  What is the user-acceptable latency between the Call Agent and the Endpoint.  Say I have two phones on the same network, but the call agent is 500ms one way.  Will the users be happy with the delay to dial tone and delay in audio connection setup.

I have not found information about this in the SRND.

-Nate
From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Wes Sisk
Sent: Friday, August 20, 2010 3:27 PM
To: H, Tim
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] Call Control / Phone Registration Distance

I believe the SRND speaks to this.  It should point to G.114 for recommended RTT for user experience.  Above 150msec user experience begins to deteriorate.

/Wes

On Friday, August 20, 2010 4:15:10 PM, H, Tim <TimH at trstone.com><mailto:TimH at trstone.com> wrote:

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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