3cx v 20 and v18 same issue for some linux installation

[snowbike]

Hi everyone..I've already faced this problem on version 18 too..now I wanted to try on the new 20, but as I found, nothing has changed...the installed versions are onprem, actually different, with different networks but same problem and only on the linux version... so I don't consider the problem to be the internal network/wifi as even in the windows version it is the same and with the windows version no problem at all... flaw? when I try to call an extension on the cell phone app, in version 18 the cell phone started to ring after 3 "rings" heard on the calling phone, in version 20 it doesn't ring at all... if I call the landline extension from the cell phone in reverse, it's immediate .. this thing first drove me crazy and then I leaned towards the windows version which absolutely doesn't cause the aforementioned problem.. but it pisses me off because obviously they haven't published version 20 for windows yet and who knows when they will... obviously the problem for me is generic on all linux installations and only on mobile phones. Now I ask you if you have ever had a similar problem and if so where and how you need to intervene to solve it, because the only variable in this case is exclusively the OS... thanks everyone
ps: i have all app in "available" state with "accept push notification" enabled..

 

[SteveITS]

Are you using a custom FQDN or a 3CX FQDN? If custom, run your server through https://www.ssllabs.com/ssltest/ and verify the cert is valid.

 

[snowbike]

hi SteveITS, is a 3cx fqdn

 

[snowbike]

issue is the same of this and is not solved yet:
https://www.3cx.com/community/threa...-without-facilityid-after-v20-upgrade.125034/

 

[OlegR_3CX]

@snowbike Hi there.
So you are on V20 Linux and in your event log you have the same issue as it was mentioned in the other forum thread that you show in the link?