2
1.3 Description (Hardware)
• Basic Configuration: The basic configuration con-
sists of one 19" rack mounted chassis comprising
the following:
• BP3 Backplane provides interconnection of mod-
ules and communications interface
• CPM3 Module contains the CPU that controls all
communication to and from up to 24 line receiver
modules, printers, including 2 serial ports and an
Ethernet connection.
• PSU3 Power Supply Unit provides power to all
modules of the system.
• DRL3 Line Card: Each DRL3 line card monitors one
telephone line. Stores on the card up to 64 profiles
for data management including 8 different hand-
shaking protocols. Each card has a 256-event
buffer, for short term retention of signals.
• DC/DC3 provides 5 V
DC power output required for
the DRL3 line cards. A slot exists for a second DC/
DC3 voltage converter. In the event of a failure, the
redundant DC/DC3 can be removed/replaced with-
out powering down the unit.
• PSC3 (Power Supply Controller) monitors the
states of the power and fan for each MLRF3.
• MLRF3: The metal rack of the System III that incor-
porates the LCD and BP3.
1.3.1 BP3 Backplane
The BP3 provides for interconnection of system
modules and racks; and provides communication
outputs as indicated in figure 1-6.
1.3.2 DC/DC-3 5V Power Converter
Each DC/DC3 converts 15VDC input from the PSU3
module and outputs the 5V
DC required for all mod-
ules to function. A slot is provided for a second DC/
DC3 power supply to provide full redundancy for
5V
DC power requirements. Power will remain ON if
there are two DC/DC3 in the rack. The DC/DC3 is
also Hot Swappable if a working redundant DC/DC3
is in the same rack.
Figure 1-2
1.3.3 PSU3 Power Supply Unit
The PSU3 is the System III power supply. The
System III requires a 120VAC/60Hz input power
source. A power cord with a IEC connector is
required. The model System III CE requires a 240V
AC,
50Hz input power source.
NOTE: For UL installations use only 120VAC/60Hz to
power the SYSTEM III.
For UL installations use UL listed UPS Power Supply
for protective signaling systems and/or listed bur-
glar alarm power supply, as applicable.
The model System III CE is not UL Listed.
Electrical Specifications:
System III
• Input voltage range: 120 V
AC
• Frequency: 60 Hz
• Input current: 2.5A max (RMS) @120 V
AC
In 2-rack configurations a redundant PSU3 can be
inserted in the second shelf. In the event of a PSU3
failure, the redundant PSU3 automatically assumes
operation. These modules are Hot Swappable (can
be removed/replaced while the system is in opera-
tion) if a working redundant PSU3 is installed.
1.3.4 PSC3 Power Supply Controller
The PSC3 performs two functions. It provides the
high voltage required for backlighting to the LCD dis-
play. It also monitors the activity of the PSU3, DC/
DC3 power supplies and the power supply fan, and
reports their status to the CPM3 module.
1.3.5 CPM3 Central Processing Module
The CPM3 Central Processing Module collects sys-
tem information and directs line card information to
the appropriate outputs. Along with it's built in scroll
buttons and large LCD message screen, the CPM3
features TCP/IP, parallel printer and two serial RS-232
ports for computer interface capability. The printer is
supervised for loss of power, off-line, paper out and
other trouble conditions. The communication link to
the computer through the RS-232 and TCP/IP port
can be monitored by the supervisory heartbeat test
transmissions.
1.3.6 DRL3 Line Card
The System III supports a maximum of 24 line cards.
Each DRL3 line card can monitor one telephone line
and act independently of the CPM3 module. Each
module is equipped with a 256-event non-volatile
memory to record events and corresponding tele-
phone numbers. Calling source (Caller ID, ANI and
calling name) capability is built-in and telephone
numbers can be printed out, sent to automation and
stored in memory. Events and information stored in
memory may be printed at any time. Each line card
also features flash downloads through Ethernet or
serial port for fast software upgrades.
PSU3
Fan (not shown)
located above PSU3
DRL3 Line Card
(12 cards per rack)
LCD
Line Card Debug Output
UIB3
CPM3 PSC3 DC/DC3 B
DC/DC3 A
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