Hi,
We’re having issues with calls from extensions to external numbers which are then transferred to another extension. In this case ext 101 dialed 3344988888, and shortly thereafter transferred the call to ext 20101. At the 30min marker the Zoiper softphone on ext 20101 shows the call as being placed on “Remote Hold” and everything goes quiet. We’ve also seen occasions where the call drops, but for the most part we are seeing the “Remote Hold”
The FreePBX is hosted in the cloud with a Public IP. Both exts 101 and 20101 are behind NAT (same LAN). Ext 101 is a Bria Softphone and Ext 20101 is a Zoiper Softphone.
Extensions and trunks are using res_pjsip.
I’m no expert, but looking at the logs it seems the trunk provider is sending an INVITE at the 30min (1800 session timer) mark. Not sure if it’s the PBX or the Softphone that needs to respond. But apparently neither does. Any clues as to how to remedy this?
Thank you!
Sal
[2020-07-08 09:35:20] VERBOSE[10522] res_pjsip_logger.c: <— Transmitting SIP request (1108 bytes) to TLS::3779 —>
INVITE sip:20101@:3779;transport=TLS SIP/2.0
Via: SIP/2.0/TLS :5061;rport;branch=z9hG4bKPjc81baf03-1697-4009-8279-5b4609c87c21;alias
From: “CID:” <sip:3344988888@>;tag=afd24c59-0bba-4308-a14f-6dbd7f67df05
To: <sip:20101@;rinstance=724ccf469fd5a40b>;tag=f8151c7e
Contact: <sip:asterisk@:5061;transport=TLS>
Call-ID: df68b291-ac8d-49d9-bb5f-974c58a6dcc5
CSeq: 17269 INVITE
Allow: OPTIONS, REGISTER, SUBSCRIBE, NOTIFY, PUBLISH, INVITE, ACK, BYE, CANCEL, UPDATE, PRACK, MESSAGE, REFER
Supported: 100rel, timer, replaces, norefersub
Session-Expires: 1800;refresher=uac
Min-SE: 90
Max-Forwards: 70
User-Agent: FPBX-15.0.16.61(16.9.0)
Content-Type: application/sdp
Content-Length: 337
v=0
o=- 588668918 588668918 IN IP4
[2020-07-08 09:35:20] VERBOSE[10522] res_pjsip_logger.c: <— Received SIP response (1040 bytes) from TLS::3779 —>
SIP/2.0 200 OK
Via: SIP/2.0/TLS :5061;rport=5061;branch=z9hG4bKPjc81baf03-1697-4009-8279-5b4609c87c21;alias
Require: timer
Contact: <sip:20101@:3779;transport=TLS>
To: <sip:20101@;rinstance=724ccf469fd5a40b>;tag=f8151c7e
From: “CID:” <sip:3344988888@>;tag=afd24c59-0bba-4308-a14f-6dbd7f67df05
Call-ID: df68b291-ac8d-49d9-bb5f-974c58a6dcc5
CSeq: 17269 INVITE
Session-Expires: 1800;refresher=uac
Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO, SUBSCRIBE
Content-Type: application/sdp
User-Agent: Z 5.4.5 rv2.10.9.0
Allow-Events: presence, kpml, talk
Content-Length: 370
v=0
o=Z 0 3 IN IP4
s=Z
c=IN IP4
t=0 0
m=audio 32050 RTP/AVP 0 106 9 8 18 3 101 98
a=rtpmap:106 opus/48000/2
a=fmtp:106 sprop-maxcapturerate=24000; minptime=20; useinbandfec=1
a=rtpmap:18 G729/8000
a=fmtp:18 annexb=no
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=rtpmap:98 telephone-event/48000
a=fmtp:98 0-16
a=inactive
Full SIP & PJSIP debug at the 30min marker:
https://pastebin.com/X3Y6H6Ys