[SIPForum-discussion] Media Port change in SDP
Stephen James
sjames_1958 at yahoo.com
Sat Jul 27 16:29:37 UTC 2013
If you make a new offer the answered has every right to present a new offer with entirely new parameters.
Sent from my iPhone
On Jul 26, 2013, at 23:48, Amit Salunkhe <amitsalunkhe21 at gmail.com> wrote:
> Hi All,
>
> Call scenario is
>
> 1. A Calls B (Audio Call)
> 2. Call got connected
> 3. Now A want to switch that call to Video hence A User end device send Re-INVITE with Audio + video SDP
> 4. Call got connected as B Party accept that Video Call offer.
>
> Now the change we found in SDP Audio part is- Initial Audio call A offer Audio/Media port as 1001 but while offering Video call with Re-invite A party end device change Audio Port to 2000.
>
> My question is this correct behavior? is there any RFC/Standard docs describe this valid or invalid to change media port for call type change in same session.
>
> Also whether B party or media anchoring device(SBC/Softswitch) need to accept this change?
>
>
> Amit-
>
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