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Elastix Version 5 Credentials Trunk Configuration

Intro to Elastix 5

Elastix is a high-performance turnkey PBX that’s easy to install and manage. Powered by 3CX, you get a complete unified communications solution with softphones included for Android, iOS, Windows and Mac as well as a web-client. Supported IP Phones, Trunks and gateways are all automatically configured with inbuilt templates. You also get integrated WebRTC video conferencing for free. Available on-premise on Windows, Linux, Raspberry Pi or in the Cloud.

To begin, create a credentials based connection from your Telnyx account. Assign a DID and outbound profile to this connection.

Elastix 5 Requirements

  1. Download Elastix 5.
  2. Install Elastix - For instructions on installation steps, please see Elastix installation guide here.

Please note down any user and password you've created which will be used for login purposes at a later stage.

Once the installation has finished, you'll be prompted to choose either running the tool from the web browser or from the command line. We recommend the web browser. There is a URL provided which you will need to use to access the graphical user interface in order to configure Elastix 5.


Configuring Your Telnyx Mission Control Portal

For step by step instructions on each of the requirements on the Telnyx Mission Control Portal, please follow this guide.

Elastix 5 Setup Guide

Installing Elastix 5

As Elastix is powered by 3CX, you'll need to acquire a license key to try it out.

Once you've acquired the key, proceed to creating a new install and click next.


IP Address

  1. You're public IP address will automatically be detected next and you can choose to either go with the one that was detected or enter an IP address in manually. Once you've done this, click next.
  2. Choose whether your IP address is static or dynamic. Click next.


Select Ports

  1. Select the ports required for 3CX Management console. They automatically populate default values for you but you can choose your own.


Network Adapter

  1. Proceed to select the default network adapter.


FQDN and Certificates

  1. Your FQDN and certificates will now be generated.


Specify Extension Length

  1. Select how many digits your extensions should have.


Specify an Admin Email

  1. Enter an Email for important system notifications.


Configure Country and Time Zone

  1. Select Country and Time Zone.


Specify a Default Operator Extension

  1. Create an Operator Extension.


Security - Confirm Countries Call Can Be Made To

  1. As an additional security measure, you can specify to which countries calls can be made.


Select a Language

  1. Select your preferred language. The last sub section is registration and you should fill out your personal details here.


At this point the PBX basic settings are now fully configured and you'll be shown a congratulations page upon successfully completing the steps. Make sure you note the details that are provided but a copy of the details are also sent to the admin email you specified on a previous step.

Use the FQDN or your public IP address URL in order to access the PBX interface. If the PBX is on your local LAN, and your router has a firewall, ensure to apply port forwarding to the ports you specified in step 3 - otherwise the interface may not resolve for you.


Login and Dashboard

Login with the username and password you created.


You'll be brought the the dashboard now.


Confirm Your Network Settings

  • Navigate to "Settings" -> "Network"
  • "Ports" Tab: ensure "SIP Port" is set to 5060.
  • "Public IP" Tab: double check that your Public IP is correct and that you have selected the proper Network card Interface.
  • Settings --> Click on "Network Settings" --> Public IP tab --> Section : "External IP Configuration".
  • NOTE: Please make sure that connection IP on the portal and Static Public IP is same. You can also use the FQDN for inbound calls and the IP for outbound calls.

Create Telnyx SIP Trunk

  1. Navigate to "SIP Trunks" on the left.
  2. Click "+ Add SIP Trunk" near the top of the screen.
  3. A new pop up will be opened. You need to enter/select all the required details :


  1. After entering the details, Click on OK
  2. This will open the trunk configuration window:

    • Tabs
    • General
    • DIDs
    • Caller ID
    • Inbound Parameters
    • Outbound Parameters
  3. In the General tab, there are 3 sections to be explained in the following sections:

    • Trunk Details
    • Authentication
    • Route calls to

Trunk Details




Route calls to


  1. Select the "Options" tab

    • For "Require registration for:" select "Do not require".
    • Remove the "GSM-FR" from Assigned Codecs
    • Click "Apply"
  2. Select the "Outbound Parameters"

    • For "Contact : User Part" in the SIP Field column Select "Custom Field".
    • To allow private calling - "From: Display Name" and "From : User Part", select "Custom Field" but leave the Custom values blank.
    • Click "Apply".


  1. After entering all the details please click on “OK” which is on the top.

    • If all the fields are entered correctly the IP trunk will now be live. We can now proceed to our inbound and outbound rules.


Inbound Rules

  • Click on "Inbound Rules" from the navigation menu on the left.
  • Click on "+Add DID Rule" near the top of the screen.
  • There are 2 sections in this:

    • General
    • Route calls to



Route Calls to


Outbound Rules:

  • Click on "Outbound Rules" from the navigation menu on the left.
  • Click on "+Add" near the top of the screen.
  • There are 3 sections in this :

    • General
    • Apply this rule to these calls
    • Make outbound calls on


Rule Name : You can enter any preferred name


Apply this rule to these calls:


Make outbound calls on:

We need to configure routes in this section. Configure up to 3 routes for calls. The second and third route will be used as backup. For each route, digits can be stripped or added. Strip Digits 0 on Route 1 and Strip Digits 1 digit for remaining 2 routes.


After completing the configuration, click "OK".

Your Elastix 5 IP-PBX Trunk is ready to go. Happy calling!

Further Help

Our getting started guide will help you work through any issues with your Mission Control Portal setup.

Check out Elastix's help section for extra support!

Need extra help setting up Elastix 5 with Telnyx? Click the Live Chat icon at your lower right hand corner and start a chat!

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