[SIPForum-discussion] RTP event and Marker Bit

suranga chamara rissuranga at gmail.com
Thu Oct 11 04:05:51 UTC 2012

hi Raghul,

Yes. you cann't set marker bit 1 for same DTMF in same RTP packet
sequence.You have to set marker bit 1 for first packet in that DTMF packets
sequence other packets marker bit MUST be 0.Refer rfc4733 for more details.


On Tue, Oct 9, 2012 at 4:32 PM, Raghul Prasanna <raghul82 at yahoo.co.uk>wrote:

> HI All,
> I understand that Marker Bit in RTP when set to True indicates a New Event.
> In case of RTPevent packets, my understanding is the Mark bit should be
> set to True only upon a detection of new DTMF.
> It cant be set to True on the RTPevent packets for the same DTMF, is that
> right?
> Thanks,
> Raghul
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