You need to configure the Linphone softphone app to access your ClusterPBX SIP account over a secure TLS channel.

Intended Audience


Step-by-Step Guide

  1. Download Linphone for the desired platform from the official web site
  2. Install the application
    • Windows: run the setup
    • Mac OS X: Open the .dmg file and drag the file to the Applications folder
    • Smartphones/Tablets: User their respective appstore
  3. Open the Linphone application
  4. Click the ASSISTANT button to start the configuration assistant


  6. Enter the URL provided below under FETCH REMOTE CONFIGURATION
  7. Click the FETCH button to download the security certificate

  8. Click Confirm when asked if you want to reboot now to apply the change
  9. Click the ASSISTANT button on the application’s main screen
  10. Click the USE A SIP ACCOUNT button on the WELCOME screen

  11. Enter the information of your SIP account as found on your ClusterPBX account’s My Softphone page (available only to User accounts)

    • Username: User Name on the My softphone page (your extension)
    • Display name (optional): you may want to type your name there
    • SIP Domain: the Server on the My Softphone page – also your ClusterPBX realm – add port :8061 to the server name



    • Password: your softphone password – Secret on the My softphone page
    • Transport: pick TLS
  12. Click the Use button when all the information is entered
  13. Click the Active account button at the top right to switch to the account you just created

  14. Select the account under the Active account drop down menu

  15. Click OK to connect to it – You are done, unless you are on an encrypted VoIP system
  16. Go the application’s Preferences
  17. Under the SIP Accounts tab, Edit your account by pressing the edit button () beside the sip account

  18. Change the Registration duration (sec) value to 600
  19. Click Publish presence information

  20. Click the Confirm button
  21. Click the Calls and Chat tab

  22. Select SRTP encryption – that will work only if you are on a connection encrypted with TLS
  23. Pick your desired Language from the dropdown menu under the User Interface tab (the default is your system language)

  24. (Optional) Click the Advanced tab and activate the Logs enabled option

Your communications are now secure.