3CX Version 16 PJSIP Trunk Configuration

This is a step-by-step procedure to setup a Simtex SIP trunk with 3CX version 16.

3CX is a is a widely used, stable and has feature-rich graphical user interface.

Our guide assumes you have already set the server up, and have the web-based GUI up and running.

Download 3CX from the follow link 3CX

In order to make outbound calls, your system needs to know what it’s allowed to route and where the calls are to be routed.  We’ll set these up to guard against people making unauthorised calls on your system.

If you do not wish to make international calls, leave out the 0011 route pattern.

To save yourself from grief later down the track, configure a prefix to route all external calls.  In Australia, we use 0 as  a standard.  This will ensure internal numbers will never overlap external destinations.

Note: You will need a separate rule entry for each destination
If you wish to have a number that you dial such as 0 before being able to an outgoing call you will need to set up the Prefixes and Strip Digits appropriately.

Setting up extension based CallerID

CallerID can be set at a global level in your trunk configuration however you can override this setting at the extension level, if the extension needs a unique caller ID number. To configure the extension’s caller ID number follow these steps:
1. Select “Extensions” from the left tree menu
2. Double-click on the desired extension
3. Enter the desired caller ID number in the “Outbound Caller ID” field.