[SIPForum-discussion] multiple SIP INFO

HM Kias hmkias at gmail.com
Fri Jul 22 00:59:31 UTC 2011

Hi Vijay,

There would be 2 challenges in the below query
1. Marker M Bit & E end bit of the RTP header will have the same duration
and there will not be any increase in the timestamp. Since the update RTP
event is every 50ms, only the first key press will be detected.

2. Sending the redundant final RTP packet will also be an issue.


On Thu, Jul 21, 2011 at 6:15 AM, vijay baskar <vijaybaskar.sm at gmail.com>wrote:

> Hi Forum,
> A question on the SIP INFO method.
> Is it possible to send multiple SIP INFO at the same time, without waiting
> for the 200 OK response for the previous SIP INFO.
> Requirement is if there is multiple dtmf digits received at the same time
> from the PSTN, then the MGC has to send all the dtmf digits at the same time
> to the IP side using SIP INFO, instead of sending 1 SIP INFO and waiting for
> the 200OK for this, and then continue with the 2nd SIP INFO.
> Thanks in advance.
> BRs
> Vijay
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HM Kias
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