[SIPForum-discussion] : Voice call considered as video

[Mithilesh kumar]

Hi Kashif,
    Its true but if there is a B2B in between A and B, and B is sip or non
sip station, then B2B completely remove video param. if the 2nd leg does
not have video support.
    So from interop points of view both scenario is valid.
-- Mithilesh Kumar


On Thu, Dec 22, 2011 at 3:50 PM, Kashif Husain <kashifhusain29 at gmail.com>wrote:

> >"Either party B might have removed the complete video param in SDP or
> m=video 0 RTP/AVP"
>
> Party B has to reject the video offer if it doesn't support video it
> cannot remove the video m=line, this will violate offer/Answer model.
> RFC 3264
> "For each "m=" line in the offer, there MUST be a corresponding "m=" line
> in the answer. The answer MUST contain exactly the same number
>  of "m=" lines as the offer."
>
> Thanks,
> -kashif
>
> On Thu, Dec 22, 2011 at 11:40 AM, Mithilesh kumar <
> kumar.mithilesh at gmail.com> wrote:
>
>> Hi,
>>      Just to add,
>>       Either party B might have removed the complete video param in SDP
>> or m=video 0 RTP/AVP.
>>       From SBC points of view it should check Party B's SDP, which may
>> come in 180,200, ACK, OPTION, UPDATE etc.
>>
>>
>> On Wed, Dec 21, 2011 at 4:13 PM, Kashif Husain <kashifhusain29 at gmail.com>wrote:
>>
>>> Party B might have rejected the video by responding with port 0. In this
>>> case the SDP will have video m=line like this:
>>> m=video 0 RTP/AVP
>>>
>>> Thanks,
>>> -kashif
>>>
>>> On Sat, Dec 17, 2011 at 5:32 PM, Ahmed A Omer <abdi1978 at hotmail.com>wrote:
>>>
>>>>  Hey all
>>>> I have a case where INVITE message is sending video codec in the
>>>> negotiation and along with the call  but as the B number have no video
>>>> enabled call becomes voice only!
>>>>
>>>> But the CDR file from SBC  generate the call as video!!
>>>>
>>>> Any hint how to consider the call as voice only and ignore the INVITE
>>>> message codecs?
>>>>
>>>> Regards,
>>>> Ahmed Omer
>>>> Sent from my iPad
>>>>
>>>>
>>>>
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>>>
>>>
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>>
>>
>> --
>> Thanks & Regards
>>
>> Mithilesh Kumar
>>
>
>
>


-- 
Thanks & Regards

Mithilesh Kumar
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