The PBX provides Background Music and Music on Hold. Up to 2 external music sources (e.g., user-
supplied radios) can be connected to the PBX.
Wiring should be done carefully to prevent undue force being exerted on the plug. Otherwise,
sound may only be heard intermittently.
External Music Jacks are SELV ports and should only be connected to approved SELV devices.
When the PBX and external music sources are not connected to the same ground, hum noise may be
induced into Background Music and Music on Hold.
Up to 2 paging devices (user-supplied) can be connected to the PBX.
External Paging Jacks are SELV ports and should only be connected to approved SELV devices.
PC/Printer (via RS-232C)
The PBX is equipped with an RS-232C interface. This interface provides communication between the PBX
and the user-supplied devices such as PC or line printers. The RS-232C port is used for system
programming, SMDR, diagnostics and external system database storage (save/load) functions.
When using special accessories such as cable, the user should use those specified in this installation
manual to comply with the limits for a Class B digital device pursuant to the FCC Rules.
Use an RS-232C cross cable for connection between the PBX and PC.
Input (I)/Output (O)
3.11 Connection of Peripherals