Installation manual
LITE SYSTEM INSTALLATION AND SUPERVISOR GUIDE 9.0 VER. 1
10
Each line to the Lite system unit requires an industry-standard-telephone port on the PBX
(this is also known by other names such as analog port, 2500 set interface, SLT port.). Some
telephone systems do not provide single-line-telephone ports, and they require a special
analog interface box between the PBX and the voice-mail system, as shown below. If in
doubt, contact the local PBX manufacturer’s representative.
Line 1
Line 2
PBX
Line n
Voice-processing board
CO 1
CO 2
CO n
Normal PBX extensions
Central
Office
A T I
A T I
Ext A
Ext B
(
(
(
(
Radio-shack part
number 279-402
Connecting the Lite System to a PBX via External Analog Telephone Interface (ATI) Equipment
Connecting the Serial Cable Between the Lite System Unit and PBX
If you are establishing a serial integration, you must attach a serial cable between the Lite
system unit and the PBX. The Lite system unit is set up to use the COM 1 port to
communicate with the phone system. Therefore, you should connect the serial cable to the
Lite system unit’s COM 1 port.
Consult the phone system documentation for instructions on attaching the serial cable to the
phone system COM port.
Note: If the phone system you are working with is a Comdial DSU (Impression 24,
48, 72), attach the serial cable to COM 1 on the DSU. If the phone system is
a DSUII (Impact 24, 48, 72), attach the serial cable to COM 3 on the DSUII.










