Configure and View Status

Table 13. ADSL Performance Status Screen Fields

 

 

FieldMeaning

 

 

Down Alarms

Identifies the current alarms in the path to the subscriber.

 

 

Up Alarms

Identifies the current alarms in the path from the subscriber.

 

 

System State

Describes the state of the ADSL system.

 

Startup states:

 

DATA (normal operation)

 

HAND (handshake)

 

TRAIN (training transceivers for loop conditions)

 

WSYNC (waiting for frame synchronization)

 

 

SNR Margin (dB)

Identifies the current (cur) and minimum (min) margin values

 

for the ADSL loop for the current 24-hour period. The SNR

 

margin represents the margin relative to the SNR required for

 

a BER of 10–7 . A margin greater than zero indicates a

 

performance better than 10–7 . The system provides a default

 

margin of 6 dB, which translates to a performance of 10–10

 

BER or better. See page 2 for information on SNR margin

 

and BER.

 

 

Line Attn (dB)

Indicates the decrease in amplitude of the transmitted

 

upstream and downstream signals as measured at the ADSL

 

respective receivers for that channel (upstream or

 

downstream).

 

 

24 Hour ES

Indicates the total number of ES that have been detected on the

 

ADSL link during the previous 24-hour period.

 

 

24 Hour UAS

Indicates the total number of unavailable seconds (UAS) that

 

have been detected on the ADSL link during the previous

 

24-hour period. This figure represents the amount of time that

 

the lines were not available for transmission since power on or

 

last clear.

 

 

Data Rate (kbps)

Identifies the actual data rates of the ADSL link.

 

 

44

Megabit Modem CRA-C User Manual