DS1 (T1)
|
Alarm indication signal (AIS)
|
The normal T1 traffic signal contained a defect condition and
has been replaced by the AIS. A transmission interruption occurred
at the remote endpoint or upstream of the remote endpoint. This all-ones
signal is transmitted to prevent consequential downstream failures
or alarms.
|
ais
|
Yellow alarm
|
The remote endpoint is in yellow alarm failure. This condition
is also known as a far-end alarm failure.
|
ylw
|
Ethernet
|
Link is down
|
The physical link is unavailable.
|
link-down
|
Integrated services
|
Hardware or software failure
|
On the adaptive services module, either the hardware associated
with the module or the software that drives the module has failed.
|
failure
|
Serial
|
Clear-to-send (CTS) signal absent
|
The remote endpoint of the serial link is not transmitting a
CTS signal. The CTS signal must be present before data can be transmitted
across a serial link.
|
cts-absent
|
Data carrier detect (DCD) signal absent
|
The remote endpoint of the serial link is not transmitting a
DCD signal. Because the DCD signal transmits the state of the device,
no signal probably indicates that the remote endpoint of the serial
link is unavailable.
|
dcd-absent
|
Data set ready (DSR) signal absent
|
The remote endpoint of the serial link is not transmitting a
DSR signal. The DSR signal indicates that the remote endpoint is ready
to receive and transmit data across the serial link.
|
dsr-absent
|
Loss of receive clock
|
The clock signal from the remote endpoint is not present. Serial
connections require clock signals to be transmitted from one endpoint
and received by the other endpoint of the link.
|
loss-of-rx-clock
|
Loss of transmit clock
|
The local clock signal is not present. Serial connections require
clock signals to be transmitted from one endpoint and received by
the other endpoint of the link.
|
loss-of-tx-clock
|
Services
|
Services module hardware down
|
A hardware problem has occurred on the device's
services module. This error typically means that one or more of the
CPUs on the module has failed.
|
hw-down
|
Services link down
|
The link between the device and its services module
is unavailable.
|
linkdown
|
Services module held in reset
|
The device's services module is stuck in reset
mode. If the services module fails to start up five or more times
in a row, the services module is held in reset mode. Startup fails
when the amount of time from CPU release to CPU halt is less than
300 seconds.
|
pic-hold-reset
|
Services module reset
|
The device's services module is resetting. The
module resets after it crashes or is reset from the CLI, or when it
takes longer than 60 seconds to start up.
|
pic-reset
|
Services module software down
|
A software problem has occurred on the device's
services module.
|
sw-down
|
E3
|
Alarm indication signal (AIS)
|
The normal E3 traffic signal contained a defect condition and
has been replaced by the AIS. A transmission interruption occurred
at the remote endpoint or upstream of the remote endpoint. This all-ones
signal is transmitted to prevent consequential downstream failures
or alarms.
|
ais
|
Loss of signal (LOS)
|
No remote E3 signal is being received at the E3 interface.
|
los
|
Out of frame (OOF)
|
An OOF condition has existed for 10 seconds. This alarm
applies only to E3 interfaces configured in frame mode. The OOF failure
is cleared when no OOF or LOS defects have occurred for 20 seconds.
|
oof
|
Remote defect indication
|
An AIS, LOS, or OOF condition exists. This alarm applies only
to E3 interfaces configured in frame mode.
|
rdi
|
T3 (DS3)
|
Alarm indication signal
|
The normal T3 traffic signal contained a defect condition and
has been replaced by the AIS. A transmission interruption occurred
at the remote endpoint or upstream of the remote endpoint. This all-ones
signal is transmitted to prevent consequential downstream failures
or alarms.
|
ais
|
Excessive number of zeros
|
The bit stream received from the upstream host has more consecutive
zeros than are allowed in a T3 frame.
|
exz
|
Far-end receive failure (FERF)
|
The remote endpoint of the connection has failed. A FERF differs
from a yellow alarm, because the failure can be any failure, not just
an OOF or LOS failure.
|
ferf
|
Idle alarm
|
The Idle signal is being received from the remote endpoint.
|
idle
|
Line code violation
|
Either the line encoding along the T3 link is corrupted or a
mismatch between the encoding at the local and remote endpoints of
a T3 connection occurred.
|
lcv
|
Loss of frame (LOF)
|
An OOF or loss-of-signal LOS condition has existed for 10 seconds.
The LOF failure is cleared when no OOF or LOS defects have occurred
for 20 seconds. A LOF failure is also called a red failure.
|
lof
|
Loss of signal
|
No remote T3 signal is being received at the T3 interface.
|
los
|
Phase-locked loop out of lock
|
The clocking signals for the local and remote endpoints no longer
operate in lock-step.
|
pll
|
Yellow alarm
|
The remote endpoint is in yellow alarm failure. This condition
is also known as a far-end alarm failure.
|
ylw
|
