Issue with Calls

[Yellow_Flash]

Hi,

I have unregistered one of the trunks that had been used by one of our test server(xxx.companyname.uk) and registered it with another test server(yyy.companyname.uk).
I tried making calls from our production server to the test server(yyy.companyname.uk)
Production server is an On-premise install(windows) whereas the test server is a cloud install(debian).
When I tried making calls from an extension in Production server to an extension in test server,
calls were going fine to the windows client but the Deskphone(cisco SPA504) isnt ringing.

Also, when I unregister the windows client and only keep the Deskphone registered, the calls doesn't go through.
When I check the Activity log of the originating server, it shows the error,
"xx.xxx.x.xxx(Ip of trunk provider) replied: 403 Forbidden; from IP:xx.xxx.x.xxx(Ip of trunk provider)
When I check the Activity Log of the receiving server, it shows
"Cause: 406 Not Acceptable/INVITE from xxx.xxx.xx.x(our public IP)"

Can someone let me what could be causing these issues?

Thank you.

 

[leejor]

"xx.xxx.x.xxx(Ip of trunk provider) replied: 403 Forbidden; from IP:xx.xxx.x.xxx(Ip of trunk provider)
When I check the Activity Log of the receiving server, it shows
"Cause: 406 Not Acceptable/INVITE from xxx.xxx.xx.x(our public IP)"

Check that the number being sent is exactly the same (correct format) in both the working call, and the failed call. Short of that, you might have to check with your provider. They should be able to tell you exactly why the call is forbidden.

 

[JohnS_3CX]

Hi @TechieGuy

Note that these phones can not be used from a remote location or in combination with a 3CX instance in the cloud.

https://www.3cx.com/Sip-Phones/Cisco-SPA/#h.a75s04qzcq3b

 

[Yellow_Flash]

Check that the number being sent is exactly the same (correct format) in both the working call, and the failed call. Short of that, you might have to check with your provider. They should be able to tell you exactly why the call is forbidden.

Thank you. I will have a check on that.

 

[JohnS_3CX]

The phones will appear as local in that case and should be able to work (so long as all VPN traffic they send is not impeded in any way). You can also use the above guide to ensure they are set up correctly with any necessary support files

 

[Yellow_Flash]

Thank you, will do that.