User`s manual

80 AT Command Set Summaries
Command Options Function & Description Ref.
(RDL) test
&T7 Initiate Remote Digital Loop-back
with self test (RDL+ST)
&T8 Initiate Analog Loop-back with self
test. (ALB+ST)
&Vn View profile settings.
&V0 View current active settings.
&Vn View the (n-1) user profile settings
(n=1-4)
&V5 View factory default settings.
&Wn n=0-3 Write current settings to user
profile n in non-volatile RAM. (See
also S35.6)
&Xn Synchronous mode timing (clock)
source selection
S14.4-5
&X0 * Modem provides synchronous
transmit clock signal (Internal clock
to pin 15 of EIA-232D)
&X1 Terminal provides synchronous
transmit clock signal (External
clock from pin 24 of EIA-232D)
&X2 Received carrier provides
synchronous transmit clock signal
(Remote or Slave clock to pin 15 of
EIA-232D)
&Yn Break handling. Destructive Break
clears the buffer. Expedited Break
is sent immediately to the remote
system. (For internal modem only.)
S28.2-3
&Y0 Destructive, expedited.
&Y1 * Nondestructive, expedited.
&Y2 Nondestructive, unexpedited.