Where does the SIP contact header IP come from?

[Clark Edmeades]

Self-hosted 3CX v20. The SIP registration Contact header shows the IP address 172.21.7.62, which is an old IP. We've change ISP and need it to use what I have changed the 3CX External IP to be. Where in 3CX is that old IP defined? I can't find it anywhere.

REGISTER sip:amcomvoice.ipsystems.com.au SIP/2.0
Via: SIP/2.0/UDP 192.168.100.10:5060;branch=(hidden);rport
Max-Forwards: 70
Contact: <sip:0861514700@172.21.7.62:5060;rinstance=62612ae0c37c7ac0>
To: "0893888622"<sip:[email protected]>
From: "0893888622"<sip:[email protected]>;tag=41fa7d46
Call-ID: (etc)

 

[Alphabetic]

Have you tried exporting your provider XML and reviewing?

 

[Clark Edmeades]

I cannot find any way to do that. Where should I look?

 

[Alphabetic]

Go to voice and chat and export your sip trunk