Section 2: Components
12 ◆ Section 2: Components DS1000/2000 Product Description
4ASTU 4 Port Analog Station PCB (P/N 80040B)
The 4ASTU PCB is identical to the 8ASTU PCB, except that it provides connection for only 4 ana-
log extensions. The 4ASTU PCB has a Mode Switch (for taking the PCB out of service), a status
LED indicating proper PCB operation, and a port activity LED to indicate traffic on the PCB. The
number of 4ASTU PCBs you can install depends on system configuration. Turn to DS2000 System
Configuration on page 22 for more.
Make a note of the following…
● The 4ASTU PCB provides high voltage message waiting for single line sets with high voltage
message waiting lamps.
● The 4ASTU PCB also provides Caller ID to single line sets.
● You can install 8ASTU PCBs in any universal slot except the first.
8ATRU 8 Port Analog Trunk PCB (P/N 80011B)
The 8ATRU PCB supports 8 analog loop start CO trunks. The PCB has a Mode
Switch (for taking the PCB out of service), a status LED indicating proper PCB
operation, and a port activity LED that indicates traffic on the PCB. The number
of 8ATRU PCBs you can install depends on system configuration. Turn to
DS2000 System Configuration on page 22 for more.
Each 8ATRU PCB also provides 2 power failure cut-through circuits. When com-
mercial AC power fails, the PCB automatically cuts through 2 trunk circuits to 2
power failure telephones.
Make a note of the following…
● The 8ATRU PCB provides built-in Caller ID.
4ATRU 4 Port Analog Trunk PCB (P/N 80010B)
The 4ATRU PCB is identical to the 8ATRU PCB except that it supports only 4 analog loop start CO
trunks. Just like the 8ATRU PCB, the 4ATRU PCB has a Mode Switch (for taking the PCB out of
service), a status LED indicating proper PCB operation, and a port activity LED that indicates traf-
fic on the PCB. The number of 4ATRU PCBs you can install depends on system configuration. Turn
to DS2000 System Configuration on page 22 for more.
Each 4ATRU PCB also provides 2 power failure cut-through circuits. When commercial AC power
fails, the PCB automatically cuts through 2 trunk circuits to 2 power failure telephones.
✍ 4ASTU PCB P/N 80040B at a glance —
Analog Station Ports. . . . . . . . . . . . . . . . . .4 Installs in any universal slot but slot 1.
Provides high voltage message waiting. Also provides Caller ID to single line sets.
✍ 8ATRU PCB P/Ns 80011B at a glance —
Analog Loop Start Trunks . . . . . . . . . . . . .8 Installs in any universal slot but slot 1.
Provides built-in Caller ID.
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