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TRACER 6000 Series Integrated System Manual Section 5 User Interface Guide
612806420L1-1F Copyright © 2005 ADTRAN, Inc. 71
> E1X STATUS/CONFIGURATION/LOOPBACK > E1X INTERFACE ALARMS
Displays any active alarms on the E1 link (reported from both the local and remote TRACER 64x0 units).
These alarms include AIS, CRC, LCV, LOS, OOF, and RMT. Table 1 briefly describes these alarms. See
Section 8, Troubleshooting Guide, on page 125 for more information on these alarms.
> E1X STATUS/CONFIGURATION/LOOPBACK > INTERFACE TYPE
(Read Only) Displays the current interface type of the E1 module as either 75 OHM or 120 OHM.
> E1X STATUS/CONFIGURATION/LOOPBACK > ALARM REPORTING
Determines whether the TRACER 64x0 unit will report active alarms. If set to DISABLED, no alarms will be
displayed on this menu page. The
ALARM REPORTING parameter is independently configured for the local
and remote TRACER 64x0 units. When set to
DISABLED, the TRACER 64x0 does not report active alarms
via SNMP, the
CRAFT port, alarm contacts, menu screens, or LEDs on the front panel. By default, alarm
reporting is set to
ENABLED.
> E1X STATUS/CONFIGURATION/LOOPBACK > CRC4 DETECTION
When ENABLED, the receiver detects the CRC-4 checksum bits in the outgoing E1 data stream and checks
the received signal for errors.
> E1X STATUS/CONFIGURATION/LOOPBACK > SIGNALING
Configures the framing format for the E1 link. The TRACER 64x0 transports E1 data across the link (as
long as the E1 signal is properly timed). Configure the framing format (using the
SIGNALING menu) to
enable the TRACER 64x0 to monitor incoming framing error events and indicate problems with the
attached metallic service. The TRACER 64x0 supports
MULTIFRAMED (also known as CAS), UNFRAMED (all
data stream with no framing sequence bits), and
FRAMED (also known as CCS). The default value is
FRAMED.
Table 1. E1 Interface Alarms
AIS (Alarm Indication Signal) Activates when an incoming remote alarm is received from a
connected E1 device. An AIS signal is an unframed all one signal that replaces the normal
traffic signal.
CRC (Loss of CRC-4 Framing) The receiver is unable to synchronize to the CRC-4 frame
pattern of the received signal.
LCV (Line Code Violations) Activates when the incoming E1 stream presents line coding
violations.
LOS (Loss of Signal) Activates when no E1 signal is present from the connected E1 equipment.
LOS is activated after receiving 192 consecutive zeros.
OOF (Out of Frame) The receiver is unable to synchronize to the FAS framing pattern of the
received signal.
RMT (Received Remote Alarm) Activates when an incoming remote alarm is received from the
E1 device, indicating that a failure has occurred in the received direction.