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Circuit Pack Descriptions
7-38
Issue 3 June 2000
BBF6 T1 EXT Circuit Pack Description
7
Purpose of Circuit
7
The T1EXT circuit pack provides all of the functions of a BBF3B circuit pack for
two T1 carrier lines. The T1EXT circuit pack also provides 60mA simplex line
powering and performance monitoring (PM) of SF and ESF signals to allow for T1
tariff verification. For PM, the T1 signals from the line are monitored. Performance
monitoring data from the opposite direction is provided by accessing the ESF data
link.
T1EXT Faceplate Indicator
7
The T1EXT circuit pack FAULT indicator is shown in Figure 7-16. This red FAULT
LED is lighted by the SYSCTL on detection of a T1EXT circuit pack failure. In the
event of an incoming signal failure, this LED flashes on and off.
Figure 7-16. BBF6 T1EXT Circuit Pack
FAULT
Lucent
tpa852473-01
x
x
S1:1
x
x
x
T1EXT
BBF6
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