AT Commands
F-50 AT Commands
\S Read Online Status
Displays a list of modem commands and their current settings. This command also
displays the active connection type, as well as the elapsed connect time and the
telephone number most recently dialed.
The \S command displays several screens. Press any key to move to the next screen.
To cancel the display, type the line-delete character – or send a Break.
T Tone Dial
Changes the current dialing mode to tone. This is the modem’s default.
&T
n Test and Diagnostics Commands
&T0
Ends test in progress.
&T1
Local analog loopback.
&T3
Local digital loopback.
&T4
Respond to remote digital loopback.
&T5
Do not respond to remote digital loopback.
&T6
Remote digital loopback.
&T7
Remote digital loopback with self-test.
&T8
Local analog loopback with self-test.
NOTE
The modem does not support &Tn commands for Bell 103, V.13, V.21, and V.23
modes.
&T0: Ends a test in progress without terminating a connection, and returns the local
and remote modems to normal operation. If a self-test is in progress, &T0 reports any
errors. The &T0 command must be the last command on a command line.
&T1: The modem should display the characters on your screen exactly as you type
them. The modem must be in normal or direct mode and set to 1200 bps or higher.
&T3: Allows a remote modem that does not support the ITU-T V.54 standard to
perform a Remote Digital Loopback test with your modem. The modem must connect
in normal or direct mode and be set to 1200 bps or higher.
&T4: Allows the modem to respond to a remote caller's request to enter Remote
Digital Loopback mode.
&T5: Prevents the modem from responding to a Remote Digital Loopback request.
