April 19, 2022
2:56 a.m.
Hi,
I've seen something similar to this before, this year.? I can't remember exactly when or what.? (I'm usually looking at? PCAPs over somebody's shoulder when they need a second opinion.)
Yeah me too. It showed on a capture troubleshooting a customer problem. One of our guys tracked it down to some strange never heard of pbx that was sending rtp packets to "open" the nat ports during early dialog. Once the device received a real rtp packet it would adjust accordingly. Why on earth they were sending 5ms to start was never investigated, we just kind of shrugged and moved on as it was not creating problems. Brian