You have to pick one of the received streams.
Typically, implementations will pick the earliest one for receiving.
There is some discussion of this in
RFC 3960 (Early Media and Ringing Tone Generation in the Session
Initiation Protocol (SIP))
>> However, even with media types that can be played at the same time to
>> the user, if the UAC has limited bandwidth, it will not be able to
>> receive early media from all the different UASs at the same time.
>> Therefore, many times, the UAC needs to choose a single early media
>> session and "mute" those sending UPDATE requests.
>>
>> It is difficult to decide which early media sessions carry more
>> important information from the caller's perspective. In fact, in
>> some scenarios, the UA cannot even correlate media packets with
>> their particular SIP early dialog. Therefore, UACs typically pick
>> one early dialog randomly and mute the rest.
Regards,
Attila
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of aditi g
Sent: 06 February 2007 06:56
To: Sreenath Kulkarni
Cc: [email protected]
Subject: Re: [Sip-implementors] query regarding forking in SIP
In this case ,caller will be confused of which 180R to us to play ring tone
if 180 R contains early media.
On 2/6/07, Sreenath Kulkarni <[EMAIL PROTECTED]> wrote:
>
>
> I think proxy should send all 180 responces it receives.
>
> /Sreenath.
>
> ----- Original Message ----
> From: aditi g <[EMAIL PROTECTED]>
> To: [email protected]
> Sent: Tuesday, 6 February, 2007 10:09:38 AM
> Subject: [Sip-implementors] query regarding forking in SIP
>
> Hi all,
>
> I have query regarding forking in SIP.
> If i am using parallel forking and my proxy recvd more than one 180 R from
> UASs.
> Which 180R will proxy forward to caller.
> Thanks...
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>
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