DIDWW SIP Trunks can be used with 3CX IP PBX for Inbound calls. The following guide will explain the steps necessary to configure the 3CX IP PBX.


This guide has been created with 3CX Version 18.0.


DIDWW SIP trunks can be configured in 3CX Hosted (PRO / ENT) plan or greater. Configuration in 3CX FREE and 3CX SMB is not available.

Getting Started

Before you begin, you will need to create Inbound trunks on DIDWW User Panel.

Create an Inbound trunk. Assign the DIDs with the preferred trunk


To add the DIDWW Inbound SIP Trunk into your 3CX console, proceed with the following steps.

Step 1. In the management console of 3CX navigate to your “SIP Trunks”.


Fig. 1. “Main SIP Trunk” window.

Step 2. In the SIP Trunks section click on Import Provider and a new window will pop-up (Fig.2).


Fig. 2. “Import Provider” window.

Step 3. Upload the file depending on the type of traffic (inbound).


If the file opens as a New Tab with XML source code, use “Save As” on this new tab to save this file as XML.

Step 4. Once file has been uploaded enter the DID number in “Main Trunk No” field that you wish to assign to this trunk. (Fig.3)


Fig. 3. “Main trunk No” window.

Step 5. Navigate to the “Extensions” menu category, and click on Create an Extension associated with the DID. (Fig.4)


Fig. 4. “Extension creation” window.

Step 6. You may enter all details for “Phone” provisioning (Optional Step). (Fig.5)


Fig. 5. “Softphone provisioning details” window.

Step 7. Create an inbound rule to forward the calls from the DID to the extension. (Fig.6)


Fig. 6. “Inbound Rules creation” window.