Tutorials: SIP Trunk Setup

SIP Trunk Setup

For the Version 20 guide click here.

Enter your username/extension number and password.

From the 3CX Dashboard, select the "SIP Trunks" tab.

Select "+ Add SIP Trunk"

  • Select Country: US
  • Select Provider in your Country: Voxtelesys
  • Main Trunk No: Your Vox Number. See Formatting below.

Voxtelesys supports National, E164 No Plus, and E164 calling formats for 3CX dialing, these can be adjusted in the portal if you want to change your calling format.

  • National: 5558675309
  • E164 No Plus: 15558675309
  • E164: +15558675309

E164 is required for SMS on 3CX.

  • Registrar/Server/Gateway Hostname or IP: Provided by Voxtelesys
  • Number of SIM Calls: Call limit with Voxtelesys
  • Type of Authentication: Provided by Voxtelesys
  • Authentication ID (aka SIP User ID): Provided by Voxtelesys
  • Authentication Password: Provided by Voxtelesys

Note: Voxtelesys also supports IP authentication.