DATA-LINC GROUP
23
DLM4500 User Guide
PN 161-10008-001A
rev 4/04
&T
n Loopback Test (V.54 Test) Commands
Values:
n = 0, 1, 3, 6
Default: None
Description: The modem can perform selected test and diagnostic functions. A test can be run only when the modem is
operating in non-error-correction mode (normal or direct mode). For tests 3 and 6, a connection between the two modems
must be established. To terminate a test in progress, the escape sequence (
+++) must be entered.
&T0 Stops any test in progress.
&T1 Starts a local analog loopback, V.54 Loop 3, test. If a connection exists when this command is issued, the modem
hangs up. When the test starts, a
CONNECT message is displayed.
&T3 Starts local digital loopback, V.54 Loop 2, test. If no connection exists,
ERROR is returned.
&T6 Initiates a remote digital loopback, V.54 Loop 2, test without self-test. If no connection exists,
ERROR is returned.
&V Display Current Settings
Values: n/a
Description: Displays the active modem settings.
&W
n Store Current Configuration
Values:
n = 0
Default: 0
Description: &W0 Stores current modem settings in non-volatile memory and causes them to be loaded at power-on or
following the ATZ command instead of the factory defaults. See also the
&F command.
&W1 Clears user default settings from non-volatile memory and causes the factory defaults to be loaded at power-on or
following the ATZ command.
&Zy
=x Store Dialing Command
Values:
y = 0–2
x = Dialing command
Default: None
Description: Stores dialing command
x in memory location y. Dial the stored number using the
command ATDS=y.
\A
n Select Maximum MNP Block Size
Values:
n = 0, 1, 2, or 3
Default: 3
Description: \A0 64-character maximum.
\A1 128-character maximum.
\A2 192-character maximum.
\A3 256-character maximum.
\B
n Transmit Break
Values:
n = 0–9 in 100 ms units
Default: 3
Description: Works in error-correction mode only. Error correction must be set on. Sends a break signal of the specified
length to a remote modem. Works in conjunction with the
\K command. Usable for GE SNP protocol.
