OMG, what are the odds, a client reported the same problem today! Edge proxy running same 4.2.3, requests are forwarded to a farm of Asterisks v13 in a similar way based on $rd, far-end NAT traversal is handled by Kamailio.
I've had only an hour or so to debug today. Re-invites containing SDP are handled the same way as invites in terms of SDP mangling, all looks good in that sense. There's nothing special to be done about re-invites. Preliminary clue is that this happens (or not) depending on the type of firewall/NAT behind which the phone is located. In the case with the trouble, it's a Sonicwall, probably a Symmetric NAT. Is doesn't happen to a phone behind a Full/Restricted Cone NAT. What nat= are you setting for Asterisk peers? Do you engage rtpproxy/rtpengine? Any far-end NAT traversal manipulations involved such as SIP ALG or STUN? Cheers. On Thu, Mar 22, 2018 at 3:55 PM, gerry kernan <gerry.ker...@infinityit.ie> wrote: > Hi > > > > Hoping someone can point me in the right direction. > > I have a Kamailio Ver: 4.2.3-1.1 running in front of a few asterisk > servers Ver: 13.17.2 sip is routed to an asterisk server depending the > domain name in the sip request, all working as expected . but if a call is > put on hold after resuming the call the party that placed the call on hold > can’t hear any audio. The other party can hear . do I need to do anything > special to handle re-invites for calls put on hold? > > > > > > *Gerry Kernan* > > > > [image: cid:image001.jpg@01D105A5.2701B0E0] > > > > *Infinity IT | 17 The Mall | Beacon Court | Sandyford | > Dublin D18 E3C8 | Ireland* > > *Tel: +353 - (0)1 - 293 0090 | E-Mail: *gerry.ker...@infinityit.ie > > > > *Managed IT Services Infinity IT* - www.infinityit.ie > > *IP Telephony Asterisk Consulting* – > www.asteriskconsulting.com > > *Contact Centre Total Interact* – www.totalinteract.com > > > > _______________________________________________ > Kamailio (SER) - Users Mailing List > sr-users@lists.kamailio.org > https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users > >
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