User's Manual

5-12
Figure 5 - 4 Troubleshooting DS3 Radio XMT Alarms
Figure 5 - 5 Troubleshooting OC3/STM-1 Radio XMT Alarm
A B
TRANSMITTER
DS3 Frame Loss
DS3 Buffer Spill
DS3 Degraded
DS3 AIS Detect
STATUS
DS3 I/O INTFC cannot recover framing
from incoming DS3 signal or there is no
input signal. Is DS3 AIS Detect Alarm on?
Yes, troubleshoot upstream radios and
external MUX equipment.
No, check input signal. If input signal is
OK, replace DS3 I/O INTFC. If not,
troubleshoot external MUX equipment.
DS3 input to DS3 I/O INTFC has exceeded
provisioned BER threshold (high error
condition).Troubleshoot external MUX
equipment.
DS3 input data being written to elastic buffer
on DS3 I/O interface is a different rate than
the data being read from elastic buffer.
AIS (blue signal), inserted at MUX (external
to the radio) has been detected on XMT input
to DS3 I/O INTFC.
Troubleshoot external MUX equipment.
MDR-1090
05/25/07
A B
TRANSMITTER
OC3 Input Online
OC3 LOS
OC3 LOF
OC3 AIS-L Detect
OC3 Degrade
STATUS
Monday, April 09, 2001 1:58:29 PM
OC3/STM-1 INTFC cannot recover framing from
incoming OC3/STM-1 signal or there is no optical
input signal.
Is OC3/STM-1 AIS-L Detect alarm on?
Yes, troubleshoot upstream radios and external
MUX equipment.
No, check optical input signal. If optical input
signal is OK, replace OC3/STM-1 I/O INTFC. If not,
troubleshoot external MUX equipment.
OC3/STM-1 input to OC3/STM-1 I/O INTFC has
exceeded provisioned BER threshold (high error
condition).
Troubleshoot external MUX equipment.
AIS (blue signal), inserted at MUX (external to the
radio) has been detected on OC3/STM-1 input to
OC3/STM-1 I/O INTFC.
Troubleshoot external MUX equipment.
MDR-1091
05/23/05