M85 Destination not reachable

[Kiste]

Hello all,
I am experiencing the following phenomenon on an installation.
An M85 is logged on to an M900 Multicell installation.
From one day to the next the subscriber could not be called.
After a few seconds the caller (internal) receives the announcement: Destination not reachable.
If the device is then once deleted from the M900 and is taught again
it works for a short time again but dran occurs the problem again.
On the M900 everything looks normal. What can this be?

Regards Tim

 

[JohnS_3CX]

Hi Tim,

Are you using STUN on the M900?

 

[Kiste]

Hi,
i received the following info from Snom:

This unfortunately is a known problem with 3CX latest version, and it can be fixed by following these guidelines

https://service.snom.com/display/wi...ncoming+calls+on+the+M-series,+when+using+3CX

Please also notice that we worked on 3CX so that their provisioning won't affect these changes, if you are using the latest provisioning profile, so there should be no need to remove the provisioning URL from the base station.

 

[JohnS_3CX]

Yes, that is correct. The latest template update in V18 for the M900 does contain those changes.