S Registers

ATS122 AutoRateChange

The maximum average EQM level reached before the modem will downshift a speed. The default is 55 which means that if the average EQM ever goes higher than 55, then a downshift in speed will occur.

EQM stands for Eye Quality Monitor, and is a reading of the current line quality.

To view the current EQM, after connecting enter local mode by typing +++ and then type:

AT\V7<cr>.

You will be presented with a realtime reading from the modem similar to the following:

Speed EQM:

max min av hex limit Rx-Dbm S10 S09 C=cts loss S=rlsd

 

loss 19200 075A 008 007 007 (07) 016 029 018 000

Speed:

the line speed currently connected at.

EQM:

the Eye Quality Monitor (a numeric reading of the line

 

condition).

max:

maximum EQM reached for this connection.

min:

minimum EQM reached for this connection.

av:

average EQM (this is the value that the above S registers

 

refer to).

hex:

hexidecimal reading of the EQM value.

Rx-Dbm:

the receive level that the modem is operating at.

Default

55

Range

30-100

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Telenetics 56 manual ATS122 AutoRateChange, Eqm