I have same issue too. Call got disconnected just after picked up:
After I pick up the call, I see the following logs.
<— Received SIP response (417 bytes) from WS:127.0.0.1:48224 —>
SIP/2.0 480 Temporarily Unavailable
Via: SIP/2.0/WS 127.0.0.1:8080;rport;branch=z9hG4bKPj13fc9b8c-6ae1-4474-97f8-be3b3fdd35a5;alias
From: “1002” sip:1002@ip-10-0-16-85;tag=a69ad0a4-737c-43b6-9e8d-54c1c453285b
To: sip:[email protected];tag=evc3jod1uc
CSeq: 5780 INVITE
Call-ID: ce5f25f6-723f-4264-b946-a21cafc88f57
Supported: outbound
User-Agent: Browser Phone 0.3.8 (SIPJS - 0.20.0)
Content-Length: 0
<— Transmitting SIP request (415 bytes) to WS:127.0.0.1:48224 —>
ACK sip:[email protected]:48224;transport=WS SIP/2.0
Via: SIP/2.0/WS 127.0.0.1:8080;rport;branch=z9hG4bKPj13fc9b8c-6ae1-4474-97f8-be3b3fdd35a5;alias
From: “1002” sip:1002@ip-10-0-16-85;tag=a69ad0a4-737c-43b6-9e8d-54c1c453285b
To: sip:[email protected];tag=evc3jod1uc
Call-ID: ce5f25f6-723f-4264-b946-a21cafc88f57
CSeq: 5780 ACK
Max-Forwards: 70
User-Agent: FPBX-16.0.26(18.15.0)
Content-Length: 0
<— Transmitting SIP response (533 bytes) to WS: 127.0.0.1: 55620 —>
SIP/2.0 503 Service Unavailable
Via: SIP/2.0/WSS 192.0.2.119;rport=55620;received=127.0.0.1;branch=z9hG4bK4556358
Call-ID: e12cqd3oq2kuaijqckct
From: “Sunil K” sip:1002@nj;tag=ea4e9lnhfs
To: sip:1001@nj;tag=c28d5129-ef12-4299-9e7c-e0c69897ed7c
CSeq: 2 INVITE
Server: FPBX-16.0.26(18.15.0)
Allow: OPTIONS, REGISTER, SUBSCRIBE, NOTIFY, PUBLISH, INVITE, ACK, BYE, CANCEL, UPDATE, PRACK, REFER, MESSAGE
Reason: Q.850;cause=34
P-Asserted-Identity: “1001” sip:[email protected]
Content-Length: 0
== Spawn extension (macro-exten-vm, s-NOANSWER, 3) exited non-zero on ‘PJSIP/1002-00000025’ in macro ‘exten-vm’
== Spawn extension (ext-local, 1001, 3) exited non-zero on ‘PJSIP/1002-00000025’
== Spawn extension (macro-hangupcall, s, 4) exited non-zero on ‘PJSIP/1002-00000025’ in macro ‘hangupcall’
== Spawn extension (ext-local, h, 1) exited non-zero on ‘PJSIP/1002-00000025’
<— Received SIP request (299 bytes) from WS:127.0.0.1:55620 —>
ACK sip:[email protected] SIP/2.0
Via: SIP/2.0/WSS 192.0.2.119;branch=z9hG4bK4556358
To: sip:1001@nj;tag=c28d5129-ef12-4299-9e7c-e0c69897ed7c
From: “Sunil K” >;tag=ea4e9lnhfs
Call-ID: e12cqd3oq2kuaijqckct
CSeq: 2 ACK
Max-Forwards: 70
Content-Length: 0