Solved One Way Audio

[giftyDLP]

External call receivers are unable to hear 3cx users.
No settings were changed before this began. everything seems to be in place as well.
Media ports are in place and on, SIP ALG is disabled.
This happens for both inbound and outbound external calls.
any pointers on how to troubleshoot further and identify the problem?

 

[TheodorosG_3CX]

Does your firewall checker pass successfully?

 

[giftyDLP]

Does your firewall checker pass successfully?

Yes, it does

 

[TheodorosG_3CX]

Ip phones or web client has the same behavior?
Have you also checked with your provider?

 

[giftyDLP]

Ip phones or web client has the same behavior?
Have you also checked with your provider?

I did earlier
Said everything was fine

They later enabled NAT on trunk and it's working now.
thank you