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Section 8 Troubleshooting Guide TRACER 6000 Series Integrated System Manual
128 Copyright © 2005 ADTRAN, Inc. 612806420L1-1F
BPV
Bipolar violations (BPVs) indicate an improper configuration or faulty wiring.
Recommended Actions:
1. Verify the TRACER 64x0 unit and the attached equipment are configured for the same line coding
(B8ZS or AMI).
2. Verify the cable connections for the T1 interface are solid.
E1 Interface Alarms
All active E1 alarms are displayed on the E1X STATUS/CONFIGURATION/LOOPBACK menu page. To identify
the E1 interface in alarm and the specific alarm present, display the
E1(X) STATUS screens and check the
E1(X) INTERFACE ALARMS field.
Recommended Actions:
1. Display the E1(X) STATUS screen and check the E1(X) INTERFACE ALARM field to identify the active
alarm.
2. Follow the steps below for the appropriate alarm.
LOS Alarm (Loss of Signal)
LOS ALARM is an indication that the TRACER 64x0 may be unable to detect a viable E1 received
signal from the connected E1 equipment. This error may be due to a degraded signal or no signal, or
may be caused by improper framing.
Recommended Actions:
1. Verify that the E1 cable is connected to the E1 interface on the TRACER 64x0.
2. Verify the connections at the opposite end of the E1 cable.
3. Verify that the framing mode (framed, multiframed, or unframed) is the same for both the
TRACER 64x0 and the E1 equipment.
AIS Alarm
A remote alarm (alarm indication signal or AIS) is generated by the attached equipment. The root
cause must be determined at the attached equipment. A typical cause of a blue alarm is a lack of input
to a CSU.
Recommended Actions:
1. Verify the input to any attached data equipment.
LCV
Line code violations (LCVs) indicate that the received E1 stream contains an invalid line code and are
generally caused by an improper configuration or faulty wiring.
Recommended Actions:
1. Verify the TRACER 64x0 unit and the attached equipment are configured for the same line coding
(HDB3 or AMI).
2. Verify the cable connections for the E1 interface are solid.