3CX Debian Appliance and Snom M700 DECT: Registering Issues after 3CX Appliance Reboot

[myschaller]

Dear Community

I use the 3CX Appliance together with a Snom M700 and 4 M65 handsets. My problem is that after a reboot of the appliance the M65 handsets cannot register anymore to the 3CX. The message is: SIP Error@RPN00: No SIP Reg

The M700 syslog shows:
loc3 .Info 2019-09-21T05:34:27Z 04-[ Registration of user 01 (ExtIdx#0000) on domain 192.168.x.x:5060 failed]

I only get the setup working again when I reconfigure the DECT station and the Extensions in 3CX and reprovision the whole system. But I doubt this is the intended behavior ;-).

It seems to me that the problem lies on the 3CX side, because a reboot of the M700 is no problem if the setup is working. Only after rebooting the 3CX the problem occurs.

Thank you for your help!

Best regards
Frederik

 

[eddv123]

Just run Wireshark on your PBX system and if the snoms support it (Yealinks do) PCAP trace from the phone during the period of no registration.

You can compare the 2 traces and see who is sending a response and which end is either ignoring or sending back an error code, use this as a guide if you are not too familiar with SIP signalling: https://www.voipmechanic.com/sip-call-example.htm

Please advise what appliance you are using also ?

 

[JohnS_3CX]

Hi Frederik,

Can you please provide some more information on your setup as described here? https://www.3cx.com/community/threads/information-to-provide-when-requesting-help.67558/