[cisco-voip] g711 sample size in CCM - 10ms or 20ms

[Louis R. Marascio]

The phone will negotiate the frame size on a per stream (transit vs
receive) basis I believe.

Louis

-----Original Message-----
From: Erick B. [mailto:erickbe at yahoo.com] 
Sent: Saturday, February 12, 2005 2:14 PM
To: andy at dignans.com; Louis R. Marascio
Cc: erickbe at yahoo.com; andy at dignans.com; cisco-voip at puck.nether.net
Subject: RE: [cisco-voip] g711 sample size in CCM - 10ms or 20ms

Thanks for the info.

I did some looking around cisco, but could not find a answer to my next
question.

If a device configured for 10ms sample time places a call to a phone
will the phone self-adjust to 10ms for that call since the calling
device is using 10ms or will the phone which registers to call manager
use 20ms? 

--- Andrew Dignan <andy at dignans.com> wrote:

> It can be configured in CallManager:
> 
> In Cisco CallManager, the voice payload size per packet is 
> configurable on a systemwide basis. This attribute is set in Cisco 
> CallManager Administration (Service > Service Parameters > 
> select_server > Cisco
> CallManager) with the following three service
> parameters:
> 
> PreferredG711MillisecondPacketSize-(Default setting:
> 20 ms. Available
> settings: 10, 20, and 30 ms.)
> 
> [andy]
> 
> > There is a system parameter that set the preferred
> frame size.  Look
> > under the "Clusterwide Parameters (System -
> Location and Region)"
> > parameters under system parameters.
> >
> > Louis
> >
> > -----Original Message-----
> > From: cisco-voip-bounces at puck.nether.net
> > [mailto:cisco-voip-bounces at puck.nether.net] On
> Behalf Of Erick B.
> > Sent: Thursday, February 10, 2005 11:52 PM
> > To: andy at dignans.com; cisco-voip at puck.nether.net
> > Subject: [cisco-voip] g711 sample size in CCM -
> 10ms or 20ms
> >
> > I'm trying to figure out where to see/set the
> g711ulaw sample size in
> > CCM that it uses for phone calls.
> >
> > I have a client with a voip monitoring device that
> is set to 10ms g711
> > and it is giving some SLA errors. I just want to
> double check on CCM
> > side if it is to 10ms or 20ms. This box has a 10
> or 20mx setting for the
> > codec.
> >
> >
> >
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> >
> >
> 
> 



		
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