Configuration Table; Key Service Unit; P7290 Imm - Comdial DX-80 Installation & Maintenance Manual

Configuration Table

Equipment Installed
KSU1
(one APM4
included
standard)
KSU2
adds to KSU1
configuration
(KSU2 does
not come with
an APM4)
Maximum configuration using 100%
of digital port capacity
Maximum configuration using 100%
of analog port capacity

Key Service Unit

The DX-80 Key Service Unit (KSU) is a modular flat-pack design. Two KSU's (KSU1 and KSU2) may be
equipped to achieve the total system capacity of 16 CO lines, 56 Extensions (48 digital and 8 analog) and 8
Voice Processing Channels. KSU1 is factory equipped with one 408M, one APM4 and the CPM (Central
Processor Module). KSU2 is factory equipped with one 408E. Each KSU is a self-contained cabinet with
internal power supply. The power supply AC transformer can be hard-wire selected for either 117vac or
230vac operation. (It is shipped wired for 117vac operation.) The KSU is designed to be mounted on the
wall and is shipped with a wall mounting template. The compact KSU weighs less than 20 pounds and is UL
Listed.
Panels installed over various KSU openings may be removed or repositioned to accommodate exterior
connection requirements. Three such panels are present. One may be removed to route a serial cable
through the KSU outer housing for connection of ancillary SMDR equipment. Another may be removed to
route a serial (NULL Modem) cable through the KSU outer housing for direct connection of a PC for on-site

P7290 IMM

DX-80 I
NSTALLATION AND
COM4 DPM8 APM4
1
2
1
1 1
1 2
1 1 1
1
2
1
1 1
1 2
1 2 1
1 1 2
1-4
M M 03/01
AINTENANCE ANUAL
CO Digital
Lines Ports
4 8
4 16
4 24
8 8
8 16
8 24
8 16
4 8
4 16
4 24
8 8
8 16
8 24
8 24
8 16
16 48
16 32
Analog
Ports
4
4
4
4
4
4
8
4
8
8
16