[cisco-voip] g711 sample size in CCM - 10ms or 20ms
Wes Sisk
wsisk at cisco.com
Mon Feb 14 09:28:50 EST 2005
the ccm.exe process examines the codec capabilities of each device and
selects the common capability, then ccm.exe sends the appropriate
message to the endpoint to transmit or receive audio.
Yes, it will auto negotiate.
/Wes
Louis R. Marascio wrote:
>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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