3CX Problem After Update V20

[Alle CTEC]

I have a 3CX v20 PBX updated from V18. Version 20.0 Update 2 (Build 715 Release) On Premise. After the update I can't configure the voip trunk with certified partner TWT unless using generic voip template, if I use voip provider it goes into unregistered error. I tried to install a clean test V20 and on that I can register the trunk with twt template with the same parameters. Also having trunks with other 3CX PBXs if I change some settings of a trunk on the Master the PBX in question. suddenly all the bridge trunks with other PBXs go into unregistered error if I go to the slaves error trunk 127.0.0.1 port 5080 sip:127.0.0.1:5080;lr) is not reachable, DNS error resolving FQDN, or service is not available. Entering the slaves I move the trunk temporarily on the 5060 it goes up the answer on the 5090 everything goes back to working perfectly.

 

[Alle CTEC]

Error With Template TWT Registration at Trunk XXX (TWT 0XXXXXXXXXX) has failed. Destination (sip:77.239.128.7:5060;lr) is not reachable, DNS error resolving FQDN, or service is not available

 

[SteveITS]

Ensure that IP isn’t in the 3CX blacklist. (I set the provider as an allow entry)

 

[Alle CTEC]

If I configure the trunk with the same parameters but using the "voip generic" template everything works, the IP address is the same, if I use the TWT template it returns the error above.