B-10
A
PPENDIX
B: A
LPHABETIC
C
OMMAND
S
UMMARY
&R2
Enable hardware flow control of received data.
The modem sends data to the computer only
upon receipt of the RTS signal.
&Sn Send the computer a Data Set Ready (DSR) signal via the
EIA-232 interface. ("Data Set" is industry jargon for modem.)
&S0
DSR is always ON (override).
&S1 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.
&S2 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.
&S3 Same as &S2, but without the CTS signal.
&S4 Send the computer DSR at the same time as CD.
&S5 Send DSR normally, and follow CTS with CD.
&Tn Test the modem.
&T0 End testing.
&T1 Enter Analog Loopback (AL) mode. Your modem
will send a CONNECT message. Data is shown on
your screen.
&T2 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.
&T3 Start local digital loopback testing.
&T4 Grant a remote digital loopback test of your
modem.
&T5
Deny a remote digital loopback test of your
modem.
&T6 Start remote digital loopback testing.
&T7 Start remote digital loopback with self-test and
error detection.
&Wn Write the current settings to NVRAM.
&Yn Break handling. This command lets you send a break to stop
data transfer without disconnecting.
Command Function
