Re: Allocation resources for a call

HEllo Javi,

I'm not sure what the issue is? This just sounds like a normal 
transcoding case.
i.e. For Termination connection to equipment A set codec X, for the 
Termination connected to equipment B set codec Y. The MG simply 
transcodes the codec format when sending a A or B.

Regards, Christian

On 11/12/2011 12:03 AM, Javi wrote:
> I have a callwith the following 3 phases:
>
> A) Phase A: MG may carry media to a equipment A using the codec x.
>
> B) Phase B: MG may carry media to a equipment B using the codec y.
>
> C) Phase C: again, MG may carry media to the equipment A using the 
> codec x.
>
>
> In that case, what is the most appropriate way to model the call on 
> the gateway to ensure that once the call starts the gateway will have 
> the necessary resources for all phases?
>
> (i) 2 terminations (in the same or different context?) using the 
> property "StreamMode=Inactive":
>
> * Termination 1 with:
>     v=0
>     c=IN IP4 IP_A
>     m=audio port_A  RTP/AVP codec_x
>
> * Termination 2 with:
>     v=0
>     c=IN IP4 IP_B
>     m=audio port_B  RTP/AVP codec_y
>
> In phase:
>     (A, C) Termination 1 with StreamMode=SendRecv; Termination 2 with 
> StreamMode=Inactive
>     (B) Termination 1 with StreamMode=Inactive; Termination 2 with 
> StreamMode=SendRecv
>
> ===
>
> (ii) 1 termination with 2 session descriptions with ReserveGroup=true:
>
> In Phase A:
> LocalControl {
> ReserveGroup = True},
> Local/Remote {
>     v=0
>     c=IN IP4 IP_A
>     m=audio port_A  RTP/AVP codec_x
>     v=0
>     c=IN IP4 IP_B
>     m=audio port_B  RTP/AVP codec_y
> }
>
> In Phase B:
> LocalControl {
> ReserveGroup = True},
> Local/Remote {
>     v=0
>     c=IN IP4 IP_B
>     m=audio port_B  RTP/AVP codec_y
>     v=0
>     c=IN IP4 IP_A
>     m=audio port_A  RTP/AVP codec_x
> }
>
> In Phase C:
> Local/Remote {
>     v=0
>     c=IN IP4 IP_A
>     m=audio port_A  RTP/AVP codec_x
> }
>
> ===
>
> (iii) 1 termination with 1 session descriptions with ReserveValue=true 
> to allocate the resources:
>
> Phase A)
> LocalControl {
> ReserveValue = True},
> Local/Remote {
>     v=0
>     c=IN IP4 IP_A
>     m=audio port_A  RTP/AVP codec_x  codec_y
> }
>
> Phase B)
> LocalControl {
> ReserveValue = True},
> Local/Remote {
>     v=0
>     c=IN IP4 IP_B
>     m=audio port_B  RTP/AVP codec_y  codec_x
> }
>
> Phase C)
> Local/Remote {
>     v=0
>     c=IN IP4 IP_A
>     m=audio port_A  RTP/AVP codec_x
> }
>
>
>
> Regards,
>
> Javi
>
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