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2.9 Connection of Peripherals
98 Installation Manual
PC (via USB version 1.1)
The PBX is equipped with a USB interface. This interface provides communication between the PBX and a
PC.
The PC is used for system programming, diagnostics and external system database storage (save/load)
functions.
Pin Assignments
No. Signal Name
1VBUS
2USB D-
3USB D+
4GND
2
3
1
4