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

[Wes Sisk]

Hi Brad,

For MGCP and SCCP, the endpoint reports its codec capabilities at 
registration time.
For h323, codec capabilities are excahnged at call setup through the 
h245 communication.

/Wes

Brad Webster wrote:

> Wes, (et all)
>
>  
>
> How does the CCM examine the codec capabilities?
>
> Is the end device queried by SCCP about the codec or does the endpoint 
> send some voice packets to the CCM for it to sample?
>
>  
>
> Thank you in advance,
>
> Brad W.
>
>  
>
> 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
>
>>
>
>>
>
>  
>
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