This looks better Tom;
<— Transmitting SIP request (426 bytes) to UDP:192.168.0.58:59273 —>
ACK sip:[email protected]:59273 SIP/2.0
Via: SIP/2.0/UDP 192.168.0.19:5060;rport;branch=z9hG4bKPj6502c181-e3c3-4c5e-9ab3-82ce4efb7d6e
From: “Edwin” sip:[email protected];tag=1df7c7a9-6fc5-4c30-82d2-a47f5fb492a5
To: sip:[email protected];rinstance=f13350a4f8e8b87a;tag=a2dac47e
Call-ID: b6ba05c5-6e40-4193-a4e9-26462867dafa
CSeq: 28317 ACK
Max-Forwards: 70
User-Agent: FPBX-14.0.5.25(13.22.0)
Content-Length: 0
<— Transmitting SIP response (936 bytes) to UDP:192.168.0.73:5060 —>
SIP/2.0 200 OK
Via: SIP/2.0/UDP 192.168.0.73:5060;rport=5060;received=192.168.0.73;branch=z9hG4bKb475453e
Call-ID: [email protected]
From: “Edwin” sip:[email protected];tag=54dd606bc2edb90
To: sip:[email protected];tag=1d874db1-dcb1-478d-86a0-323c594eef10
CSeq: 21 INVITE
Server: FPBX-14.0.5.25(13.22.0)
Allow: OPTIONS, SUBSCRIBE, NOTIFY, PUBLISH, INVITE, ACK, BYE, CANCEL, UPDATE, PRACK, REGISTER, MESSAGE, REFER
Contact: sip:192.168.0.19:5060
Supported: 100rel, timer, replaces, norefersub
P-Asserted-Identity: “3195(Available)” sip:[email protected]
Content-Type: application/sdp
Content-Length: 297
v=0
o=- 6666 11 IN IP4 192.168.0.19
s=Asterisk
c=IN IP4 192.168.0.19
t=0 0
m=audio 14130 RTP/AVP 0 8 3 2 101
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:3 GSM/8000
a=rtpmap:2 G726-32/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=ptime:20
a=maxptime:150
a=sendrecv
<— Received SIP request (406 bytes) from UDP:192.168.0.73:5060 —>
ACK sip:192.168.0.19:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.0.73:5060;branch=z9hG4bK2397495877
From: “Edwin” sip:[email protected];tag=54dd606bc2edb90
To: sip:[email protected];tag=1d874db1-dcb1-478d-86a0-323c594eef10
Call-ID: [email protected]
CSeq: 21 ACK
Contact: sip:[email protected]:5060;transport=UDP
Max-Forwards: 70
User-Agent: Sangoma S500 V2.0.4.57
Content-Length: 0
In general SIP Settings> NAT Settings> External Address was populated with my WAN address. I’ve no idea why. it all started two days ago.
Calls are no longer dropping!
Thank you very much for your time Tom and giving me a pointer. Much appreciated!