Tutorials: SIP Trunk Setup

SIP Trunk Setup
Learn how to set up your Voxtelesys SIP Trunk with the Ubiquiti Unifi PBX!

Disclaimer: Before setting up your Unifi system please reach out to Voxtelesys Support as they will need to make some changes to your account to match the formatting of the Unifi PBX.

Reach out by email: [email protected] or by phone: 855-869-8353


Last Updated: 6/12/2025

UNIfi Talk web interface



Navigate to Unifi Talk

Unifi talk menu



From the Unifi Talk Menu, select "System"

add third-party sip provider button

Click on the "Add Third-Party SIP Provider" button.

provider name field


Enter the following:

  • Provider Name: Voxtelesys

add custom fields option


Add Custom Fields.

add fields options

Add the following Fields:

  • proxy
  • realm
  • password
  • register
  • username
  • sip_cid_type
  • retry_seconds
  • expire-seconds
add custom field settings

Enter the following:

  • proxy: Proxy from Voxtelesys. Proxy and Realm address should be the same.
  • realm: Domain from Voxtelesys. Proxy and Realm address should be the same.
  • password: Password from Voxtelesys
  • register: true
  • username: Auth/username from Voxtelesys
  • sip_cid_type: Should enter "rpd" here.
  • retry_seconds: 30
  • expire-seconds: 120
select countries button

Select Countries

destinantion countries field

Your Voxtelesys account is open to the United States and Canada by default.

If you need more calling countries, please contact Voxtelesys Support.

manually import numbers and auto import numbers fields

Add phone numbers manually or via txt file:

  • Format will be E164 +1XXXXXXXXXX
  • All new Voxtelesys accounts default to E164 format for incoming calls so if it is a new account you are set! If this is an existing account you can update the format on our portal or by reaching out to support.
  • For outbound calls you can still use 10, 11, or E164 formatted calling.
IP Address range field

Add IP ranges (optional).

Please note these configuration settings can change, so we recommend contacting Voxtelesys Support. However, we will keep the guide up-to-date.

Updated IP ranges: 2/10/22

apply changes button

Click on "Apply Changes" when you are finished.

third party sip setting page

Verify the SIP Trunk.

Read our tutorial on advanced SIP Trunk verification.