Note that this would result in wireshark seeing lots of different media streams, which may actually be worse for your purposes. I also seem to remember that going in and out of native bridging tended to have this effect. I have remember that something similar may have been added in the official version. We found that whilst this helped with some peers (Cisco) it actually broke things for others. The place where I used to work added an option that basically caused SSRC to change whenever a source change was signalled, but we were working on an old Asterisk at the time, so weren’t in a position to formally submit it. However, PTP is mainly used in LANs, with much higher precision than NTP (usually 10's of microseconds to 10's of nanoseconds). That is supposed to indicate a good place to reset jitter buffers, not a warning that a different source of timestamps is being used. This file format is a very basic format to save captured network data. Precise Time Protocol (PTP) PTP is used to synchronize the clock of a network client with a server (similar to NTP). The reason for this, and the reason that both systems were able. You can then drag & drop the column to your preferred location. I don’t know how pjsip handles these and I don’t know if chan_sip has been improved, but Asterisk used not to track the SSRC value, as there was no mechanism in the backbone of Asterisk to carry that information from A to B sides. Wireshark and tcpdump displayed different date and time stamps for the same PCAP file. 1 Answer Sorted by: 2 Probably the easiest way to add a column for Epoch Time is to open a capture file, expand the Frame details in the Packet details pane, then right-click on the Epoch Time field and choose, 'Apply as Column'. This typically happens on a source change.
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