Chapter 4. Status

LOS/AIS – indicates that the clock source is not valid due to an LOS or AIS condition.

FAIL – indicates that an internal hardware failure on the unit prevents the clock source from being used.

UNAVAILABLE – indicates that the user has specified a T1/E1 port to be used as an external clock source, but the port has not been enabled.

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

Description

 

 

OFF

VT in unequipped and T1/E1 port is disabled.

 

 

OK

VT/Port is in a normal state.

 

 

LOS

(T1/E1 Loss of Signal)

 

The unit has lost the receive signal on a T1/E1.

 

 

CAIS

(Carrier Side AIS)

 

The T1 is receiving all ones from the STS side

 

of the network.

 

 

LAIS

(Loop Side AIS)

 

The T1 is receiving all ones from the DSX-1

 

interface.

 

 

XCV

(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).

 

 

4-10

MX2800 STS-1 User Manual

61200659L1-1

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ADTRAN 4200659L2, 4200659L1, 4175043L2, 4200659L5, 4200659L8, 4200659L7 VT/PORT State, VT/Port State Alarm Description

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