How to configure a FreePBX Version 14 Credentials Trunk

Introduction to FreePBX v14

FreePBX is a web-based open source GUI (graphical user interface) that controls and manages Asterisk (PBX), an open source communication server. FreePBX is licensed under the GNU General Public License (GPL), an open source license. FreePBX can be installed manually or as part of the pre-configured FreePBX Distro that includes the system OS, Asterisk, FreePBX GUI and assorted dependencies.

To start, you should create a Credential based connection in your Telnyx Mission Control Portal account. Next, you should assign a DID and outbound voice profile to this connection so you can start making and receiving calls.

If you haven't used our portal before you can sign up and follow our demo to get up and running in no time!

FreePBX v14 Requirements

  1. You can download FreePBX v14 here.
  2. Take a look at the installation guide from Freepbx to help you with installtion.
  3. Configure your Telnyx Mission Control Portal.

Once you've configured your Telnyx account, you can now proceed to setup FreePBX V14 following the guide below.

FreePBX Version 14 Setup Guide

You are now all set on the Mission Control Portal side and are ready to configure your Telnyx trunk within your FreePBX V14 system.

Install FreePBX v.14

  1. Once you load the ISO onto your server or virtual machine, you'll have a few options to select for installation. We'll be doing a full install via asterisk 13.


  1. You'll be prompted for your preferred video method you want to install.


  1. The installer will now start.


  1. The installer will start but you will see it shows the root password is not set. You will need to click on the root password box to set your root password. The installation process can not complete until this is done.


  1. Type in your root password and confirm it a second time and click on the Done option in the top left screen.


  1. At this time the FreePBX package itself can take 15 or more minutes to install and does requires access to the internet so depending on your internet speeds it can take awhile to install so be patient.


  1. Once the install has 100% completed it will give you a reboot option as shown below. Click on reboot your your system is now installed.


  1. Once the process is complete, you'll reach the Linux console/command prompt login. You can log in here using the username "root" without quotes, and the Root password you selected earlier.


  1. After you log in, you should see the IP address of your PBX as shown below. Take note of this IP address as you will need it in the next step.


  1. Enter the IP address of the new PBX into your web browser. The first time you do so, you'll be asked to create the admin username and the admin password. That username and password will be used in the future to access the FreePBX configuration screen.

    Note - These passwords do not change the Root password! They are only used for access to the FreePBX web interface.


  1. The main FreePBX screen will offer you four options:
  • FreePBX Administration will allow you to configure your PBX. Use the admin username and admin password you configured in the step above to login. This section is what most people refer to as "FreePBX."
  • User Control Panel is where a user can log in to make web calls, set up their phone buttons, view voicemails, send and receive faxes, use SMS & XMPP messaging, view conferences, and more, depending on what you have enabled for the user.
  • Operator Panel is a screen that allows an operator to control calls.
  • Get Support takes you to a web page about various official support options for FreePBX.


Basic Settings Configuration

  1. You'll be brought to the initial setup and must enter in the username, password and admin email address in order to create your account.


  1. Once you've created your account, you'll be brought to the dashboard. Select FreePBX Administration and enter your username and password.


  1. Follow the process to activate your FreePBX V14.


  1. Select your default locales.


  1. You'll be presented with some firewall details and other suggestions. You are welcome to set this up based on your requirements. Eventually, you'll be back at the dashboard and now see more details.


  1. At this point you can now work on confirming network settings and configuring your SIP trunks and extensions. Make your way to Settings -> Asterisk SIP Settings in order to confirm your network settings. You'll want to ensure you populate the external and local network addresses under General SIP Settings and Chan SIP Settings. Click Submit and then Apply Config.



  1. Make your way to Applications -> Extensions -> Add Extension -> Add New Chan SIP Extension. The Outbound CID is the number you purchased from your Telnyx Mission Control Portal. The extensions secret may need to be populated under the Other tab.

    Note - This device uses CHAN_SIP technology listening on Port 5160 (UDP - this is a NON STANDARD port)

  2. Click Submit and then Apply Config.


  1. For testing purposes, you can now use your SIP client to register with FreePBX using the username, password/secret and local IP address of your FreePBX.


  1. Make your way to Connectivity -> Trunks -> Add Trunk -> Add New Chan SIP Trunk. You'll now be located in the General tab.

  2. Enter a Trunk name, your Outbound CID and the maximum channels you'd like for this trunk.

  3. Specify an admin email and configure your mail server configuration by specifying a mail provider.


  1. Proceed to the Dialed Number Manipulation Rules tab.

  2. Depending on your use case, we've provided a simple dial pattern US numbers below.


For US Numbers

  • prepend:1; match pattern: NXXNXXXXXX
  • prepend: blank; match pattern: 1NXXNXXXXXX


  • prepend: Country Dialing prefix; match pattern: NXXNXXXXXX
  • prepend:blank; match pattern: (Country Dialing prefix) NXXNXXXXXX
  1. Proceed to the SIP Settings tab. In the sub tabs outgoing and incoming, you'll want to include the following below settings:

Outgoing SIP Settings for the trunk:


  • type=friend
  • qualify=yes
  • insecure=port,invite
  • disallow=all
  • allow=ulaw

Inbound SIP Settings for the trunk:


  • type=friend
  • insecure=port,invite
  • dtmfmode=rfc2833
  • disallow=all
  • allow=ulaw

Outbound Routes

  1. Navigate to Connectivity -> Outbound Routes -> Add Outbound Route.

  2. Enter route name, route CID and specify the Telnyx_IP trunk for this outbound route. Click Submit and Apply Config.


Inbound Routes

  1. Navigate to Connectivity -> Inbound Routes -> Add Inbound Route.
  2. Enter route name description, DID associated with this route and specify the extension that should be associated when calls are received to the DID.
  3. Hit Submit and Apply Config.

You've just configured a FreePBX V14 Credentials Trunk and are ready to starting making and receiving calls using Telnyx as your SIP provider.

Additional Resources

Check out our quickstart guide for support on getting started with Telnyx Mission Control.

Checkout FreePBX's help section for extra support.

Can't find what you're looking for? Click the Live Chat icon at your lower right hand corner and start a chat.

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