[SIPForum-discussion] RTP ssrc change during a call

HM Kias hmkias at gmail.com
Fri Aug 19 18:51:22 UTC 2011


Hi,

Was there a handoff from an announcement or contact centers?

Regards,



On Fri, Aug 19, 2011 at 6:18 AM, Maciej Wasiel
<Maciej.Wasiel at dialogic.com>wrote:

>  Hi,****
>
> Was the timestamp restarted? If not, then this is not a stream re-start and
> you should treat the new audio as part of the original stream. ****
>
> Regards,****
>
> ** **
>
> *Maciej Wasiel*****
>
> *
> _____________________________________________________________________________________________________________________________________________
> Software Engineer, Dialogic Research Inc | Address: 15 Crawford Street,
> Needham, MA 02494 | Phone: (781) 433 9771 | Mobile: (508) 740-2641 | Fax:
> (781) 433 9255  *
>
> *Email: maciej.wasiel at dialogic.com*
>
> * *
>
> ** **
>
> *From:* discussion-bounces at sipforum.org [mailto:
> discussion-bounces at sipforum.org] *On Behalf Of *Raghul Prasanna
> *Sent:* Thursday, August 18, 2011 10:21 AM
> *To:* HM Kias; discussion at sipforum.org
>
> *Subject:* Re: [SIPForum-discussion] RTP ssrc change during a call****
>
>   ** **
>
> Hello, ****
>
> ** **
>
> nope source had different ssrc..****
>
> ** **
>
> raghul
>
> --- On *Thu, 18/8/11, HM Kias <hmkias at gmail.com>* wrote:****
>
>
> From: HM Kias <hmkias at gmail.com>
> Subject: Re: [SIPForum-discussion] RTP ssrc change during a call
> To: "Raghul Prasanna" <raghul82 at yahoo.co.uk>
> Cc: discussion at sipforum.org
> Date: Thursday, 18 August, 2011, 7:42****
>
> Hi Rahul, ****
>
>  ****
>
> This is one kind on scenario for  SSRC. ****
>
>  ****
>
> At the start of an RTP session, the sender randomly chooses an initial
> value of the timestamp and SSRC. If both the sender and receiver happen to
> choose the same SSRC, both sides choose again to ensure each have a
> different SSRC.****
>
>  ****
>
> Does this happen?****
>
>  ****
>
> Regards, ****
>
>  ****
>
>  ****
>
>  ****
>
> ** **
>
> On Fri, Aug 12, 2011 at 2:06 PM, Raghul Prasanna <raghul82 at yahoo.co.uk<http://mc/compose?to=raghul82@yahoo.co.uk>>
> wrote:****
>
> Hello All, ****
>
> ** **
>
> I have seen a call where the far end initially starts with a SSRC and then
> the next rtp from the same source has different ssrc field, I am looking for
> the wireshark I had so that  I can share it with you guys, will post it if I
> find that.****
>
> ** **
>
> Is this acceptable? I remember the user saying one way audio or something
> like that.****
>
> ** **
>
> This is not a conference call, because I was wondering if the far end was a
> mixer and the rtp was actually coming from different source, but then
> realised that it will have CSRC if it was from a mixer to identify the
> actual source.****
>
> ** **
>
> Anyways is it OK to change SSRC by a source during a call, if it can what
> will be effect on the call?****
>
> ** **
>
> Thanks,****
>
> Raghul****
>
>
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> ****
>
>
>
>
> --
> HM Kias
> 91-9443467600****
>
> ** **
>



-- 
HM Kias
91-9443467600
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