Learning Hub / Tutorials / 3CX / Add DID Numbers to a SIP Trunk (V20)FAQs

Tutorials: Add DID Numbers to a SIP Trunk (V20)

Learn how to add DID numbers to a SIP Trunk in Version 20! Keywords: SIP Trunk, 3CX, DID, Numbers, V20

Required Access: 3CX


Last Updated: 5/21/2025

3cx login



Log in to your 3CX web client.

information icon
Important Note:
If you do not have access to the Admin section, please reach out to your 3CX administrator for access or to complete the requested changes.

3cx admin gears in dashboard


Navigate to the 3CX Admin Console located in the lower left corner of the web client.

voice & chat tab



From the Admin section select the "Voice & chat" tab.

edit trunk option under the three dot icon


Inside the Voice & chat section click on your Voxtelesys SIP Trunk or select "Edit Trunk" from the three dot icon.

add did button


Inside your Voxtelesys SIP Trunk navigate to the "DID Numbers" tab, to add more numbers/DIDs press the "+ Add" button.

information icon
Important Notes:
Numbers are required to be in E164 formatting (Example: +18888675309).

From the DID Numbers tab you can also assign the number to a user, group, call queue, or IVR.


Enter the DID number and click off the number box or select "+ Add" to add another number.

Be sure to "Save" when you are done adding and assigning your new DID numbers!


location to enter number


If you want to verify, order, or port numbers you can do so from the Voxtelesys Portal:

Learning Hub / Tutorials / 3CX / Add DID Numbers to a SIP Trunk (V20)FAQs