Release Notes

Version 1.5.1 (Web, Desktop)

Attended call transfers are now available.


  • You can now make attended call transfers.


  • Presence update failures causing duplicate subscriptions were fixed.
  • Some styles on the voicemail page have been improved.
  • Blind transfer code has been completely revamped, so some edge cases will now work.
  • Receiving real-time updates when you get a voicemail has been fixed.


  • The app has been updated to Angular v5, which should provide a general performance boost.
For a list of past notes, please check out our Release Notes History.

Topics: The OnSIP Softphone App