Section 150-319-254
Revision 02
Page 14
TABLE 4. ELU-319 FOUR-CHARACTER FRONT PANEL MESSAGES
Message
Full Name
Description
CREM
Customer Remote Loopback
Signal from customer is looped back to customer at ELU-319.
NLOC
Network Local Loopback
G.703 signal is looped back to G.703 at ELU-319.
CLOC
Customer Local Loopback
Signal from Customer is looped back to customer at ERU-412.
NREM
Network Remote Loopback
Network signal is looped back to network at the ERU-412.
TLOS
Transmit Loss Of Signal
ERU-412 is in a logic network loopback state caused by a loss
of its G.703 input at the ERU-412, if enabled via the ERU-412
TLOS switch option set to ON.
LBPV
Local Bipolar Violation
A bipolar violation has been received at the G.703 input to the
ELU-319.
SIG 1 or 2
Signal 1 or Signal 2
The ELU and ERU transceivers are trying to establish contact
with each other on Loops 1 or 2 of Span 1.
ACQ 1 or 2
Acquisition 1 or Acquisition 2
The ELU and ERU multiplexers are trying to establish
synchronization over each of Loops 1 or 2 of Span 1
H1ES
HDSL Loop 1 errored second
HDSL CRC error on Loop 1. Also displays when 24 hour ES
threshold has been exceeded.
H2ES
HDSL Loop 2 Errored second
HDSL CRC error on Loop 2. Also displays when 24 hour ES
threshold has been exceeded.
ACO
Alarm CutOff
An MNRALM has occurred, and was retired to an ACO condition
by pressing the SEL button on the ELU-319 front panel.
SELF TEST
The ELU-319 is in a self test mode. This occurs every power ON
cycle. The self-test sequence includes the input G.703
transceiver chip when the HDSL loops are not in sync. This can
cause the AIS pattern, normally transmitted from the ELU during
this time, to exhibit bipolar violations (BPVs).
ALRM
Alarm Condition Exists
A minor alarm MNRALM condition is in effect.
1=xx
or
2=yy
HDSL Loop Margins
Indicates the worst-case signal-to-noise ratio measured for each
loop. A value of ‘06’ or greater is adequate for reliable system
operation.
Table continued on next page
