Gets the connected party's ID (phone number), if available.
A string containing the connected party identifier information.
The connected party is the party that was actually connected to. This may be different from the called-party ID if the call was diverted.
Contains "Unavail" if the telephony system reports that the party identifier information is not available and will not become available later.
Assembly: Traysoft.AddTapi (Module: Traysoft.AddTapi)