VOiP Probleme after Upgrade

[Nephiria]

Hello,

I have upgraded from 18.7 to 19.1.1 but now I have problems that my VOiP with Quickline about every 24 hours can not be re-registered the terminal.

Nothing has changed in the configuration.
I only did the upgrade.

If I then reboot the box from the VOiP it works again for about 24 hours after that the thing is offline again.

On the VOiP box I get the following error.

1.
Feb 26 16:23:46 KX-TGP600CE local2.info DOWNLOAD_MANAGER: mac: 432AC2AA4C3F <6> [CFG] File download failure by "The requested URL returned error: 404 Not Found (404) [E22]" http: // vpbx .business.quickline.ch: 80 / 0b5382faf775f07cb3622d46428451e6179d1e73daae5ba7.cfg

2.Feb 26 06:26:27 KX-TGP600CE local3.emerg SIP (L0) [557]: mac: 432AC2AA4C3F <0> [SIP (L1)] Registration failure by no response

3.Feb 25 06:35:49 KX-TGP600CE local3.emerg SIP (L0) [557]: mac: 432AC2AA4C3F <0> [SIP (L1)] Registration failure by DNS error

4.Feb 25 06:36:01 KX-TGP600CE local2.info DOWNLOAD_MANAGER: mac: BCC342AA4C3F <6> [CFG] File download failure by "Could not resolve host: vpbx.business.quickline.ch (0) [E6]" http://vpbx.business.quickline.ch:80/0b5382faf775f07cb3622d46428451e6179d1e73daae5ba7.cfg

These are my current mistakes.
The provider says that it is not on their side would be the problem.

Since I still had no problems with 18.7 and only after 19.1.1 problems have occurred, the guess is close that it is due to the upgrade.