U-90E Data/Fax Modem
AT Command Set Summary
5-12
Command
Options
Function & Description
Ref.
&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.
&Z?
Display all the phone numbers stored in
non-volatile RAM.
&Zn=s
n=0-49
Write phone number/s to NVRAM at
location n (n=0-49) use AT*Dn or ATS29=n
