Troubleshooting guide

MX2820 System Manual
5-22 61186003L1-1D
Rx Framing
This field shows the network framing type (C-Bit or M13).
Remote
This field indicates the current state of the remote MX2820 system or terminal equipment
(available with C-Bit framing only). Table 5-4 list the possible conditions.
Table 5-4. Remote System (Terminal) Conditions
Condition Description
Normal The far-end MX2820 system is not reporting any conditions.
RAI The far-end unit is receiving an Remote Alarm Indication (RAI) (yel-
low) alarm from the network. This alarm is a signal sent back toward
the source of a failed transmit circuit. The X-bits (X1 and X2) are set
to zero.
LOS The far-end unit has lost the Rx signal. Loss of Signal (LOS).
AIS The far-end unit is receiving an Alarm Indication Signal (AIS) (blue)
alarm condition from the network. AIS alarms occur when consecu
-
tive 1010s are received in the information bits. This indicates there is
a transmission fault located either at the transmitting terminal or
upstream from the transmitting terminal.
LOF The far-end unit detects a framing loss, Loss of Frame (LOF), from the
network.
Idle The far-end unit detects an idle sequence from the network.
DS3 Eqpt Fail (SA) The far-end unit or network is reporting a service-affecting (SA) DS3
equipment failure.
DS3 Eqpt Fail (NSA) The far-end unit or network is reporting a non-service-affecting (NSA)
DS3 equipment failure.
Common Eqpt Fail The far-end unit or network is reporting a non-service-affecting com-
mon equipment failure.
Multiple DS1 LOS The far-end unit is experiencing a loss of signal on multiple DS1s.
Single DS1 LOS The far-end unit is experiencing a loss of signal on a single DS1.
DS1 Eqpt Fail (SA) The far-end unit is experiencing a service-affecting DS1 equipment
failure.
DS1 Eqpt Fail (NSA) The far-end unit is experiencing a non-service-affecting DS1 equip-
ment failure.
Unknown The unit is unable to discern the status of the far-end unit. (Normal
state for M13 framing).