VBScript Is obsolete since SwyxWare 2015
With SwyxWare 2015 a new generation of Swyx Mobile Apps have been introduced. These new generation apps are SIP clients which login as additional devices to a user and ring in parallel mode.
The old mobile integration (up until SwyxWare 2013) worked differently.
Current Swyx Mobile Apps in the store do not use the old mobile integration, which makes this property obsolete.