En — enable/disable line quality monitor, L — report received signal level, Q — report line signal quality – Ositech comm Trumpcard Data/Fax Modem User Manual
Page 62: Examples
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Trumpcard 14400/28800 Modem
Section Four
%En — Enable/Disable Line Quality Monitor
Parameters
0-3
Default
2
Controls whether or not the modem will automatically monitor the line
quality and request a retrain, or fall back when line quality is insufficient,
or fall forward if line quality is sufficient.
Examples
AT%E0
Disable line quality monitor
AT%E1
Enable line quality monitor and auto-retrain
AT%E2
Enable line quality monitor and fall back / fall
forward
AT%E3
Enable line quality monitor and auto-retrain, but
hang-up immediately when EQM reaches hang-up
threshold
%L — Report Received Signal Level
Parameters
none
Default
none
Returns a value identifying the received signal level. The possible values
are:
009 = Received level of -9 dBm
010 = Received level of -10 dBm
011 = Received level of -11 dBm
.
.
.
043 = Received level of -43 dBm
If the received level is greater than -9 dBm, 009 will be reported. If the
received level is less than -43 dBm, 043 will be reported.
%Q — Report Line Signal Quality
Parameters
none
Default
none