AT Command Set and S-Registers
13-53980-A2-GB30-40 October 1998
Table 13-1
(3 of 15)
3800
Plus
AT Commands
AT Command Front Panel BranchDescription
DS=
n
Dial Stored Number
Dials the number stored in Location
n
(1–10). (To store a telephone
number, refer to the &Z

n=x

command.)
If any character is received from the DTE before the modem goes online,
the dial sequence is aborted. This is known as any-key abort.
Call Setup\Dial\
Dial Directory:
E
n
Command Character Echo
E0 Disables echo to the DTE.
E1 Enables echo to the DTE.
Configure\Edit\
DTE Dialer
H
n
Hook Switch Control
H0 Modem goes on-hook.
H1 Modem goes off-hook.
H0: Call
Setup\Disconnect

or

Control\Remove Make
Busy
H1: Control\ Make Busy
I
n
Identification
I0 Displays product code; default is 144.
I1 Displays 3-digit firmware revision number.
I2 Performs an EPROM check.
I3 Displays the modem’s serial number.
I4 Displays the modem’s model number. The model number of a
3810
Plus
begins with 3980. The model number of a 3811
Plus
begins with 3981.
I5 Displays the part number of the circuit card.
I6 Displays the firmware release number.
I9 Displays 3-digit firmware revision number (same as I1).
I10=
n
Changes the value of the product code displayed by the
I0 command;
n
is a number from 0 to 4:
I10=0 sets product code to 144
I10=1 sets product code to 240
I10=2 sets product code to 480
I10=3 sets product code to 960
I10=4 sets product code to 120
I11 Performs a checksum of the modem’s firmware and displays the
results in hexadecimal. (There is no DCP equivalent of this
command.)
I19 Displays the entire firmware revision level.
Status\Identity
L
n
Speaker Volume
L0 Selects low volume.
L1 Selects low volume.
L2 Selects medium volume
L3 Selects high volume.
Control\Speaker
Configure\Edit\Misc
M
n
Speaker On/Off
M0 Speaker always off.
M1 Speaker on until carrier signal is detected.
M2 Speaker always on.
Control\Speaker
Configure\Edit\Misc
OReturn to Online or Data Mode
Returns modem to Data mode from Online Command mode. None