150-231-175-01, Revision 01
Overview
HLU-231 List 7E
September 23, 1998
7
HLU-231 List 7E Card Connector
shows the card-edge connectors on the HLU-231. Active pins are highlighted in black.
Figure 2.
HLU-231 List 7E Card-Edge Connector
LLOS
Local Loss of Signal
Indicates that no signal is detected at the T1 input to the HLU. Causes a
minor alarm.
RLOS
Remote Loss of Signal
Indicates that no signal is detected at the T1 input to the HRU. Causes a
minor alarm.
DS1
DS1 BPV errors
Indicates that the number of BPVs at the HLU or HRU DS1 inputs have
exceeded the 24 hour ES threshold. Causes a minor alarm.
DS0
DS0 Blocked Channels
Indicates status of DS0 blocked channels. NONE indicates no channels are
blocked. BLK indicates some channels are blocked.
MAL1(2)
Margin Alarm Loop 1 or 2
The margin on HDSL loop 1 (2) has dropped below the threshold (1 to 15
dB) set by the user.
Table 4.
Front Panel Display Messages (Cont.)
Message
Full Name
Description
