Configuring Voiceflex SIP Trunk with 3CX

Voiceflex Logo

Step 1 - Get your Voiceflex SIP Trunk details

  1. Log into the portal and go to “Services” → “SIP Trunks”.
  2. You’ll see a list of your accounts. Select the one you want to connect to 3CX.
  3. Make a note of the:
  1. SIP Trunk ID
  2. Bearer Number(Emergency Services number)
  3. SIP Server
  4. Secret (Authentication password)

Step 2 - Adjust your invite format

  1. Go to “Services” → “Numbers and Programming”.
  2. Select your DID and click “Edit Rules”. 
  3. Select the SIP Trunk ID, then press “Add Rule”.

  1. Next press “Invite Format” and from the drop-down select “DDI: E.164 (canonical with plus)”

  1. Click on “Add Rule” and select “Next”.
  2. Save Changes.

Step 3 - Configuring your SIP Trunk

Go to the 3CX Admin Console and follow the guide on how to configure a SIP trunk. Be sure to enter the main trunk number as E.164. For example +441234567890

About Voiceflex

Voiceflex has been a leading UK provider of voice products for over 10 years. They offer a number ofVoice, Connectivity, Hosted Telephony, UC&C, and Cloud services.

Last Updated

This document was last updated on 5 July 2023

https://www.3cx.com/docs/sip-trunk/voiceflex-uk/