Wireshark · Wireshark-users: Re: [Wireshark-users] What does it mean the "Mark" string under the info in RTP packets?

[Jaap Keuter <jaap.keuter@xxxxxxxxx>]

Hi,

This is used with Voice Activity Detection / Silence suppression. The RTP flow 
halts when no-speech is detected and when the speech resumes the first RTP 
packet has the marker bit set to signal this fact[1].
The use of the marker bit is profile specific[2], so look at the application of 
RTP to see if this is appropriate.

[1] http://www.cs.columbia.edu/~hgs/rtp/faq.html#marker
[2] http://tools.ietf.org/rfcmarkup?rfc=3550&draft=&url=#section-5.3

Thanx,
Jaap

Boaz Galil wrote:
> Dear Experts,
>  
> I am reviewing G729 packet stream. I have noticed that I have lots of 
> packets that have the string "Mark" in the info field.
>  
> Guy/or any other expert - can you please share some information about 
> the "Mark" string?
>  
> Thanks in advance,
>
>  
>
> --
> Boaz.