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Circuit Pack Descriptions
7-22
Issue 3 June 2000
BBF3/BBF3B DS1PM Circuit Pack Description
7
Purpose of Circuit
7
The DS1PM circuit pack provides all of the functions of a BBF1B circuit pack and
also provides performance monitoring (PM) of SF and ESF signals to allow for T1
tariff verification. For PM, the DS1 signals from the DSX are monitored.
Performance monitoring data from the opposite direction is provided by accessing
the ESF data link. The new BBF3B has the additional capability of allowing single
DS1 facility loopbacks.
DS1PM Faceplate Indicator
7
The DS1PM circuit pack FAULT indicator is shown in Figure 7-9. This red FAULT
LED is lighted by the SYSCTL on detection of a DS1PM circuit pack failure. In the
event of an incoming signal failure, this LED flashes on and off.
Figure 7-9. BBF3 DS1PM Circuit Pack
DS1PM
x
x
x
BBF3
FAULT
S1:1
x
x
LUCENT
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