Chapter 27 Global PBX Settings
ISG50 User’s Guide
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6 In the Devices window, you can view the state and channel for the TAPI lines that you can control
and manage. To change the TAPI line state or make/answer a call, you need the CTI (Computer
Telephony Integration) client or server software, such as xtelsio CTI Client or ESTOS UCServer.
To confirm that the TAPI driver is installed, click start > Control Panel > Phone and Modem
Options. Then click the Advanced tab and make sure a ZyXEL TAPI entry appears in the list of
providers.