Paxton Door Entry Intercom Integration with 3CX Telephone System
We’re often asked by businesses how to integrate Paxton door entry systems with your 3CX telephone system. Here’s our step-by-step guide.
Here is our step by step guide on how to set-up a Paxton door entry panel and intercom with your 3CX telephone system. Here we’ll show you how to configure a 3CX phone system to allow you to answer and open your door right from your existing handsets or softphone application.
In this example we are using the latest Paxton door entry panel with the new touch screen display.
User Account
The door entry system itself has to login to the 3cx phone system to register as an extension, which will then allow the door entry system to ring the relevant phones when entry is required into your building/office.
Create the user within your 3CX phone system, use a name that is easily identifable when somebody uses your intercom, for example Front Door.
You will then need to take note of the ID located under the phone provisioning tab and the Password located in the same section. These will be used later on when configuring the door entry software.
To start with you will need to download the Paxton entry configuration tool. You can request this directly from Paxton, if you weren’t given this software by your installers. You will need to know your system engineer code to get into this software which your installer will have.

To allow the system to see your 3CX system it requires an IPV4 address on the network. To enable this go into the Network tab and enable IPV4, set this via DHCP or statically if required. You will receive the status Address assigned ok at the bottom of the window.
To start with you will need to download the Paxton entry configuration tool. You can request this directly from Paxton, if you weren’t given this software by your installers. You will need to know your system engineer code to get into this software which your installer will have.
To allow the system to see your 3CX system it requires an IPV4 address on the network. To enable this go into the Network tab and enable IPV4, set this via DHCP or Statically if required. You will receive the status Address assigned ok at the bottom of the window.
Heading into the Net2 entry door configuration utility, you will need to go into the site tab on the left-hand side and go into SIP Account tab. Within here you will need to tick the box to Enable SIP and Use SIP server, from here you will then need to put the following information in the basic section as follows:
– Server Address – Your 3CX server name, for example myserver.3cx.co.uk
Then within the Advanced tab you will then need to enter the ID that you took note of in the last step from your 3CX provisioning tab.
Heading into the Net2 entry door configuration utility, you will need to go into the site tab on the left-hand side and go into SIP Account tab. Within here you will need to tick the box to Enable SIP and Use SIP server, from here you will then need to put the following information in the basic section as follows:
– Server Address – Your 3CX server name, for example myserver.3cx.co.uk
Then within the Advanced tab you will then need to enter the ID that you took note of in the last step from your 3CX provisioning tab.
Configure the address book
You will then need to configure the extensions which you’d like the intercom to ring each time someone requests to access the building/office. To do this add in the relevant extension from your 3CX system that you would like the door intercom to call. If you require it to ring multiple phones then you can add the extension of a ring group within your 3CX system.
You can add multiple entries if required.

Troubleshooting.
Why is there no video from the door entry to the phone screen?
The phones will only display the camera from your door entry panel if the physical phone handsets support H264. For this, we would recommend Fanvil X6 handsets.

Door doesn’t open when pressing the number 1?
We have found as of writing this article firmware version 3.* doesn’t work with the current 3CX system, we have raised this with Paxton. A known working version is 2.19.8729. Once your door entry panel is running this firmware the door should open fine. It is also worth checking the token settings within the Net2 Configuration utility.

Why is the extension not registering to the phone system?
If your extension is not registering then triple check your ID and password being used. You must also ensure that the Disallow use of extension outside the LAN, under the options tab in your 3CX system, is disabled.

Check This Out.
We also have a video showing you this step-by-step guide on how to set up a Paxton door entry intercom system with 3CX.
Get in touch.
If you need any more help or have any questions feel free to contact our team by calling 01158 244 824 or email us using the button below