3Com 56K Command Reference Manual page 158

B-10 A B: A
PPENDIX LPHABETIC
C S
OMMAND UMMARY
Command Function
&R2
&Sn Send the computer a Data Set Ready (DSR) signal via the
EIA-232 interface. ("Data Set" is industry jargon for modem.)
&S0
&S1
&S2
&S3
&S4
&S5
&Tn Test the modem.
&T0
&T1
&T2
&T3
&T4
&T5
&T6
&T7
&Wn Write the current settings to NVRAM.
&Yn Break handling. This command lets you send a break to stop
data transfer without disconnecting.
Enable hardware flow control of received data.
The modem sends data to the computer only
upon receipt of the RTS signal.
DSR is always ON (override).
In Originate mode: Send DSR after dialing, on
detection of the remote device's answer tone. In
Answer mode: Send DSR after sending an answer
tone.
When Carrier is lost, send a pulsed DSR signal
with Clear to Send (CTS) following Carrier Detect
(CD). This option is for specialized equipment such
as automatic callback units.
Same as &S2, but without the CTS signal.
Send the computer DSR at the same time as CD.
Send DSR normally, and follow CTS with CD.
End testing.
Enter Analog Loopback (AL) mode. Your modem
will send a CONNECT message. Data is shown on
your screen.
Enter AL mode and send a CONNECT message.
The Business Modem sends an internal test
pattern to the transmitter and loops the pattern
back to the receiver. No data is seen on your
screen.
Start local digital loopback testing.
Grant a remote digital loopback test of your
modem.
Deny a remote digital loopback test of your
modem.
Start remote digital loopback testing.
Start remote digital loopback with self-test and
error detection.