TUNNEL ⋆ SpendMinimum

Check the following things :

Check your Softphone Settings (Steps Below).
Check if you are able to ping the PBX server from LAN and outside LAN (Google How to ping a server from CMD/Terminal).
Check your PBX settings (steps Below).
Check your Internet connectivity.
Check if any VPN/Firewall is blocking the services.

Match if the 3cx Secure tunnel password and the username and password all match in your softphone to PBX.
1. How to check if the username and password match in 3cx Softphone App :
  - Go to your softphone and open the Account Settings
  - Now click on the account you want to check and click on edit
    - In case there is no profile please create a new profile on the softphone app.
    - Now See if the Use 3cx Tunnel Option is Checked and match the passwords from here to your PBX.

Match if the 3cx Secure tunnel password and the username and password all match in your PBX to Softphone.
1. How to check if the username and password match in 3cx PBX .
  - Go to your 3cx PBX admin login page and open the main menu from the left had side of the screen with 3 vertical bars if not already opened.
  - Now click on the Security Dropdown menu :
  - Here you will See the 3CX Tunnel Option. Click on it to open the settings.
  - This is your 3cx Tunnel Password which is different from your App username password.
  - Copy this and match it from your softphone.
2. Now Go to your PBX Main menu again from the left hand side and go to the users menu for configuring 3cx softphone settings.
  - Now from the users menu open the extension you want to edit
  - Now when the extension is opened go to phone provisioning tab
    - Under the Authentication TAB is where you will Find your 3cx APP username and password.
    - Match This from your softphone
  - Now Go to the Options TAB
    - Now in this Tab Check if the option Block Remote Tunnel Connections has been unchecked
    - Also if the the extension is not disabled
    - And if you are using the softphone outside the PBX local network then please check if the Disallow use of extension outside the LAN option is also unchecked