TopView uses voice call-out devices to make notification phone calls. Calls can be made through a VOIP service (network-based phone call) and analog phone lines.
End of TAPI support
TopView no longer supports TAPI for making voice notification calls. TAPI requires a TAPI device (voice modem, voice card) and drivers from the device manufacturer. Newer Windows operating systems no longer provide reliable TAPI support. TopView supports VOIP (network-based phone calls) and we have VOIP solutions that can use an existing analog phone line.
A GSM VOIP Gateway allows TopView to make phone calls over a cellular network. The Gateway is installed on the same network as TopView, so as long as you have a good cellular signal you can make voice calls from TopView to both mobile and land phones.