Hi Joshua, You're right, it was a firewall problem. One of those things where testing a change in one place throws up a previously unseen problem somewhere else! Thanks for the tip.
On Thu, 19 May 2022 at 21:18, Joshua C. Colp <jc...@sangoma.com> wrote: > On Thu, May 19, 2022 at 6:04 AM David Cunningham < > dcunning...@voisonics.com> wrote: > >> Hi Dovid and Joshua, >> >> The PSTN is sending RTP immediately after the 200 OK, on both legs of the >> call. Since the PCAP taken on the Asterisk server itself shows this RTP >> from the PSTN then presumably it can't be a network issue preventing the >> RTP. >> >> Having said that, the problem is not reproduced when the peer is another >> Asterisk server on the same network, and that does point to a network >> difference. >> >> Is there any other way in which the RTP keepalive might affect Asterisk's >> behaviour? >> > > No, the option only does anything if no RTP has been sent for a period of > time. It doesn't fundamentally alter the behavior of RTP in general. > > Another thing to consider is that a PCAP is taken before any local > firewall rules are applied, which can give a false impression that the > firewall on the system is not an issue when in reality it can be. That's > something to check. > > -- > Joshua C. Colp > Asterisk Technical Lead > Sangoma Technologies > Check us out at www.sangoma.com and www.asterisk.org > -- > _____________________________________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > Check out the new Asterisk community forum at: > https://community.asterisk.org/ > > New to Asterisk? Start here: > https://wiki.asterisk.org/wiki/display/AST/Getting+Started > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users -- David Cunningham, Voisonics Limited http://voisonics.com/ USA: +1 213 221 1092 New Zealand: +64 (0)28 2558 3782
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