[SIPForum-discussion] ICE - Connectivity check Algorithm

anand kumar Vijayan anandkumar4n at gmail.com
Wed Aug 7 04:20:03 UTC 2013

HI All,

 I have one call scenario, our customer not getting 200 OK with SDP from
your side after PRACK which is resulting in call failure.

 Many calls are  getting abandoned due to the reason i explained above,
signal trace attached for your reference.

 Kindly confirm due above scenario any call failure happen or not, if call
failure happen then how to resolve the issue.

Please help us


Anand Kumar V


On Tue, Jul 30, 2013 at 11:02 AM, rahul sankanur
<rahul.sankanur at gmail.com>wrote:

> Hi ,
> In ICE rfc 5245, it is mentioned that connectivity checks will start for
> the first media stream(as mentioned in SDP) .
> There is also a mention that each media stream will have independent
> timers which decides the interval between connectivity checks and RTO for
> those candidates,
> I have a doubt here.
> Connectivity checks will begin at the same time for all media stream
>                                               OR
> connectivity checks will begin for the second media stream only after
> first media stream's connectivity checks are over.
> Regards,
> Rahul Sankanur
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