Hi,
Thanks for the reply.
This is what I was doing just now, with little changes. The envelope now looks like this:
Retransmitting #3 (NAT) to 178.63.143.236:5060:
REGISTER sip:sip.didlogic.net SIP/2.0
Via: SIP/2.0/UDP XXX.XXX.XXX.XXX:5061;branch=z9hG4bK10101b96;rport
Max-Forwards: 70
From: sip:XXXXX_sip.didlogic.net>;tag=as56b43f4b
To: sip:XXXXX_sip.didlogic.net
Call-ID: 62628034490da93b16149d7415e3bc05@10.1.1.200
CSeq: 138 REGISTER
Supported: replaces, timer
User-Agent: FPBX-13.0.11(13.5.0)
Expires: 120
Contact: sip:443300108980_XXX.XXX.XXX.XXX:5061
Content-Length: 0
Still times out though.
As my IP is dynamic, I would definitely need to use a domain name instead of an IP, or I would have to manually come to SIP Settings and change it, no ?