How to configure Kerio Operator to connect to VOIP-Unlimited


This information is designed for Kerio Operator 2.4 and newer.

Learn how to connect Kerio Operator to a SIPSession Initiation Protocol - A communication protocol used for voice and video calls in Internet telephony or private IP telephone systems. account with VOIP Unlimited. We assume that you already have a VOIP unlimited SIP account and know your SIP credentials.


Before starting this procedure, ensure you have:

  • Your phone number and username, as provided by VOIP Unlimited.
  • Your password.
  • SIP proxy address. Currently,

All of this information is emailed to you from VOIP-Unlimited.


  1. Log in to the Kerio Operator admin interface, go to the Call Routing section and click Add a SIP Interface.
  2. Name your new interface and enter your assigned phone number.
  3. Click Next.
  4. Select the desired internal extension (queue, script, conference or group) and optionally enter an outbound prefixCountry codes, area codes, a number, or a set of numbers that are dialed before the telephone numbers..
  5. Click Next.
  6. Enter in the Domain (IP address/hostname) field, enter your username (not your phone number) into the Username field and your password into the Password field.
  7. Click Next.
  8. Verify the information in the Summary section and click Finish.
  9. Open the route configuration and go to theCodecsPrograms used in streaming media and audio/video conferencing that encodes or decodes digital data streams and signals. tab and correct the supported codecs list to match those supported by VOIP-Unlimited. The supported codecs are G729, G711a and G711u.
  10. Click OK.