Westermo TD-34 - Manual (Page 24)

24 6610-2203
E – Echo
The modem enables or disables the echo of characters to the DTE according to the
parameter supplied.The parameter value, if valid, is written to S14 bit 1.
Syntax: ATE<value>
<value> = 0 Disables command echo.
= 1 Enables command echo. (Default)
Examples:
Result Codes:
OK <value> = (0-1)
ERROR Otherwise
%E – Enable/Disable Line Quality Monitor and Auto-Retrain or
Fallback/Fall Forward
Controls whether or not the modem will automatically monitor the line quality and request a
retrain (%E1) or fall back when line quality is insufficient or fall forward when line quality is
sufficient (%E2).The parameter value, if valid, is written to S41 bits 2 and 6.
If enabled, the modem attempts to retrain for a maximum of 30 seconds.
%E0 Disable line quality monitor and auto-retrain.
%E1 Enable line quality monitor and auto-retrain.
%E2 Enable line quality monitor and fallback/fall forward. (Default)
Fallback/Fall Forward.When %E2 is active, the modem monitors the line quality (EQM).When
line quality is insufficient, the modem will initiate a rate renegotiation to a lower speed within
the V.34/V.32 bis/V.32 (TD-33) modulation speeds.The modem will keep falling back within the
current modulation if necessary until the speed reaches 2 400 bit/s (V.34) or 4 800 bit/s (V.32).
Below this rate, the modem will only do retrains if EQM thresholds are exceeded. If the EQM
is sufficient for at least one minute, the modem will initiate a rate renegotiation to a higher
speed within the current modulation speeds.The rate renegotiation will be done without a
retrain if a V.32 bis connection is established.
Speeds attempted during fallback/fall forward are those shown to be available in the rate
sequences exchanged during the initial connection. Fallback/fall forward is available in error
correction and normal modes, but not in direct mode.
&F – Restore Factory Configuration (Profile)
The modem loads the factory default configuration (profile).The factory defaults are identified
for each command and in the S-Register descriptions. A configuration (profile) consists of a
subset of S-Registers.
Syntax: AT&F<value>
<value>
= 0 Restore factory configuration 0.
= 1 Restore factory configuration 1
= 2 Restore Westermo extended configuration.
Examples:
Result Codes: OK
<value> = (0-2)
ERROR Otherwise