[Linphone-developers] Meaning of time_jump verification

[BOITEUX, Frederic]

                Hello Linphone developpers,

 

  Could you explain me what does mean “timestamp_jump” warning which can be raised (in rtpparse.c, rtp_session_rtp_parse() function) when a RTP packet’s timestamp is greater than last RTP received packet’s timestamp + time_jump limit ?

 

I’m sometimes facing this warning on phone calls where the peer send RTP data only when some signal is detected (DTX) : if no signal has to be sent by the peer during the time_jump limit, its next RTP packet raises a warning, whereas its RTP sequence number is correct (N+1) and its timestamp is also consistent with time this new packet has been sent…

Does it means I should disable this warning by an arbitrary high value in time_jump limit (with  rtp_sesssion_set_time_jump_limit() function) ?

 

                With regards,

                               Fred.

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