Vt/Port State - ADTRAN 1200287L1 User Manual

Chapter 4. Status
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VT/PORT STATE

This field displays the current alarm condition of the VTs/ports.
Possible conditions are given in the following chart:
VT/Port State
Alarm
OFF
OK
LOS
CAIS
LAIS
XCV
4-10
– indicates that the clock source is not valid due to an
LOS/AIS
LOS or AIS condition.
F – indicates that an internal hardware failure on the unit
AIL
prevents the clock source from being used.
– indicates that the user has specified a T1/E1
U
NAVAILABLE
port to be used as an external clock source, but the port has not
been enabled.
Description
VT in unequipped and T1/E1 port is disabled.
VT/Port is in a normal state.
(T1/E1 Loss of Signal)
The unit has lost the receive signal on a T1/E1.
(Carrier Side AIS)
The T1 is receiving all ones from the STS side
of the network.
(Loop Side AIS)
The T1 is receiving all ones from the DSX-1
interface.
(T1/E1 Excessive Code Violations)
The controller card is receiving excessive code
violations, exceeding the threshold set by the
user (see XCV Threshold on page 3-12).
MX2800 STS-1 User Manual 61200659L1-1