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 |
| 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. |
the receive level that the modem is operating at. |
Default
55
Range
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