Hi Vivek,
It's perfectly alright for the B2BUA to use this mechanism as well. As it seems 
you already know it, for a B2BUA, a call are two different call legs.. so it 
can treat individual leg with its own preferences/configuration. Depending on 
the methods supported, codec negotiation , etc by either legs of the call with 
the B2BUA, anything's possible.

- Ben.


--- On Wed, 10/15/08, Vivek Batra <[EMAIL PROTECTED]> wrote:

> From: Vivek Batra <[EMAIL PROTECTED]>
> Subject: [Sip-implementors] Implementation of INFO in B2BUA
> To: [email protected]
> Date: Wednesday, October 15, 2008, 4:17 AM
> Hi Folks,
> 
> I have a doubt regarding implementation of INFO in B2BUA.
> 
> INFO is used to transport DTMF digit however other
> information (wireless
> signal strength etc) can also be carried over INFO.
> 
>  
> 
> In B2BUA, if INFO (with DTMF) is received on first call
> leg, I need to block
> the INFO and generate the DTMF in Inband/ RFC2833 on other
> call leg (since
> SIP client on other call leg might not support INFO OR
> RFC2833/ Inband is
> programmed in local configuration of B2BUA for other call
> leg).
> 
>  
> 
> Is it true implementation in B2BUA to block INFO on first
> call leg and
> generate the DTMF in other type if SIP client on other call
> leg does not
> support INFO?
> 
>  
> 
> I was afraid by blocking the INFO since it can also be used
> to transport
> other information.
> 
>  
> 
> Best Regards,
> 
> Vivek Batra 
> 
>  
> 
>  
> 
>  
> 
> _______________________________________________
> Sip-implementors mailing list
> [email protected]
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