Problem with firewall dlink dfl200

[coal]

Hi everyone,
I have setting up 3cx Phone system in my office succesfully.
I am able to make and receive call when i am in office and when i am out of the office (using a nokia e65 conneced to wifi).
I am not able to make /receive calls when i am on a network with the dfl 200 firewall (all my customer have this device).
I have tried to change the policy, i have tried to open all port ...etc , but not working.

Any suggestion is welcome.

 

[h2009]

Any chance you can get your firewall log- that should tell us what happening.

Also when you say you've configured all your ports -which ones have you done (see if you've missed any). Also have you done it correctly for TCP/UDP?

What happens when you try and use the firewall tester within 3CX - what results do you get? (please also provide the 3CX log as that can see us whats happening)
Can you make internal calls?

 

[coal]

The PBX is not firewalled. When I run the firewall test it is all ok.

All calls internal/internal and internal/external work fine when I'm in office and when I'm out of office on a network without the firewall.

I'm tried to open all port TDC/UDP 1000-65000; I'm tried a port forwarding to my ip-phone without success.
I have spend about 2 month in research for this problem without success. :cry:

 

[5qg4]

May be the STUN issue.
Please check the firmware version of E65 in use. The lastest firmware has built in STUN and ironed out alot of the early problems.