3CX (Dedicated) | E.164: New Build/Configuration

---

1. Open the SIP Trunks tab

2. Add a new SIP trunk

3. Type in your Main Trunk Number

Under the General tab add your Main Trunk No as +1 (your DID) ex. +17019299797

4. Click on the DIDs tab

If you have more DIDs, click on the DIDs tab at the top and add other DIDs in the same format.

5. Click OK at the top to save changes

6. Click on the Outbound Caller ID tab

Any Outbound Caller IDs you set will need to have the +1.

7. Update Outbound rules

You can follow our guide for setting up outbound rules so you do not need to dial +1 when calling out of the system.

• You could also read our written tutorial here.

---