CHAPTER 4. Module and Internal Option Card Installation
4-10
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WAN Interface Module
BRI-1ST (1-Port ISDN BRI S/T Mini Module)
This module provides one ISDN BRI S/T interface port, supporting two voice
or data timeslots. Voice timeslots connect to the voice subsystem while data
timeslots connect into the router subsystem.
Figure 4.9 BRI-1ST Mini-Module
The following table explains the LEDs states in detail.
LED
Indication
& Color
Description
GREEN
The module passed it’s self-test and is available to the
router
RDY
OFF
Reset, Power down, Removal state
GREEN
Active connection on the first B channel in port 0
ST-0 B0
OFF
Disconnected on the first B channel in port 0
GREEN
Active connection on the second B channel in port 0
ST-0 B1
OFF
Disconnected on the second B channel in port 0
This module is typically connected as shown below:
Figure 4.10 Connecting BRI-1ST Mini Module
BRI
-1ST
B1
B0
RDY
ST-0
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