> For the complete documentation index, see [llms.txt](https://prosbcdocs.telcobridges.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://prosbcdocs.telcobridges.com/configuration-details/configuration-by-use-case/sip-trunking-configuration/freepbx-extension-creation.md).

# FreePBX Extension Creation

## Introduction

This document provides instructions on how to add an extension to FreePBX Server to work with the ProSBC. Please visit the following link for more details about [Creating an Extensions in FreePBX Server](https://wiki.freepbx.org/display/FPG/Configuring+Your+PBX#ConfiguringYourPBX-CreatingExtensions)

## FreePBX Extension Configuration

1\. Navigate to “Applications” → “Extensions” and click on "Add New PJSIP Extension"

<figure><img src="https://docs.telcobridges.com/w/images/thumb/c/c5/Freepbx_Exten_1.png/300px-Freepbx_Exten_1.png" alt=""><figcaption></figcaption></figure>

2\. Here you will choose an User Extension, a Display Name and a Secret. The User Extension will be used as the registration username and the Secret will be used as the password on the device (SIP phone, soft phone, etc.) that you choose to use for the extension.

<figure><img src="https://docs.telcobridges.com/w/images/thumb/5/58/Freepbx_Exten_2.png/900px-Freepbx_Exten_2.png" alt=""><figcaption></figcaption></figure>

3\. You can change extension features from other menus like, voicemail, Find me/follow me, advanced, etc .. 4. Once done, “Submit” the configuration and press the “Apply Config” button.


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