2.12.1 Connection of Peripherals
PC/CTI Server (via USB version 2.0)
The PBX is equipped with a USB interface. This interface provides communication between the PBX and a
PC or a CTI server.
The PC is used for system programming, diagnostics and external system database storage (save/load)
The CTI server is used for connecting PCs on a LAN to provide third party call control CTI. The CTI connection
uses the CSTA Phase 3 or TAPI 2.1 protocol.
The operating system of the PC or CTI server required for third party call control depends on your CTI
application software. For details, refer to the manual for your CTI application software.
To protect the system, keep the following in mind:
Make sure that both connector cases (frame ground) of the USB cable are conductive. If they are not
conductive, make sure that both connector cases of the cable are firmly connected.
If this is not possible, connect the frame of the PBX to the frame of the PC/CTI server using an earthing
wire in order to prevent difference in the electrical potentials.