Specifications

CONTENTS
2–1
PART 2. HARDWARE
DESCRIPTIONS
2.1 KEY SERVICE UNIT
The PROSTAR DCS Key Service Unit is a
single plastic cabinet (see Figure 2–1) contain-
ing the following:
l Processing, switching and customer me-
mory for all ports
l Seven universal card slots
l Four DSP channels (digital signal proces-
sors)
l Wall-mount kit
l Power supply slot
2.2 EXPANSION CABINETS
The expansion cabinets are plastic cabinets
that mount next to the KSU (see Figure 2–2)
and contain the following:
l Maximum two per system
l Seven universal card slots
l Four DSP channels
l Power extension cable to connect commer-
cial AC power to the expansion cabinet
l Expansion interface B card (EXPN-B)
l High-Speed Data Link Cable (HDLC)
l Wall-mount kit
l Power supply slot
2.3 COMMON CONTROL
CARDS
ROM CARDS
A PROSTAR DCS system must have a ROM
card as it contains the system software. Currently there are two types of ROM cards
available—ROM 1 and ROM 2. Each ROM card is encased within a static dissipative ABS
plastic shell for added protection during handling (see Figure 2–3).
FIGURE 2–1
FIGURE 2–2