Help? Misdirected register (Got REGISTER for foreign registrar)

[perfect-touch]

V18u2 (23)

These errors are being flagged-up for our Gigaset N720 installation - never seen the error before and all the mobile devices are registered and operational. I have rebooted the N720 infrastructure but the errors continue. I can't see any changes that have been made to 3CX yesterday or the N720 infrastructure. Any direction where I should look?

21/12/2023 09:55:05 - Misdirected REGISTER: RegErr Recv Req REGISTER from 192.168.19.50:5060 tid=3ce5f9fb75ae704b1221355833319aa6 Call-ID=438549381@192_168_19_50:REGISTER sip:192.168.19.191 SIP/2.0Via: SIP/2.0/UDP 192.168.19.50:5060;branch=z9hG4bK3ce5f9fb75ae704b1221355833319aa6;rport=5060Max-Forwards: 70Contact: <sip:[email protected]:5060>To: "Ollie Beach" <sip:[email protected]>From: "Handset1" <sip:[email protected]>;tag=194833547Call-ID: 438549381@192_168_19_50CSeq: 3 REGISTERExpires: 180Allow: INVITE, ACK, CANCEL, BYE, OPTIONS, INFO, SUBSCRIBE, NOTIFY, REFER, UPDATEUser-Agent: Gigaset N720 DM PRO/70.117.00.000.000Content-Length: 0

21/12/2023 09:55:05 - Got REGISTER for foreign registrar: registrar host <sip: @192.168.19.191:0/UDP> is not mine!

 

[perfect-touch]

Well, looking closer at the tracer [email protected] won't match the system domain. I've changed the string on the N720 to match the realm on 3CX and the error seems to have gone. Strange though, I'm certain this was previously set to the 3CX IP address before without issue. Regardless, ignore me