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Configuration Quick Reference A-7
Configuration
Quick-Reference
Table A-1.
AT Commands, Cross-Referenced to Front Panel Optio n s
AT
Command
Parameter &
Option Description
+++ —
Escape Data Mode
Enter command mode (does not require AT prefix or <CR>. The character is determined by the
content of S-Register 2.
A/ —
Re-Execute Last Command
Re-executes the last AT command string issued to the modem, including redialing a telephone
number. (Does not require AT prefix or <CR>.) The modem has a redial security feature. See
the AT
*
ZD command for details.
AT = x —
Change S-Register Value (x=new value)
Lets you change the setting of the S-Register that was last accessed with an S-Register
command.
AT ? —
Display S-Register Value
Displays the contents of the last S-Register accessed.
AT —
Attention Code
Precedes all commands except (+++) and A/.
ATA —
Manual Answer
Causes the modem to answer a call regardless of the ring count.
ATDn Enter Then Dial
Dialing an Unstored Telephone Number (n=phone number)
Lets you dial a telephone number of up to 50 characters without storing it in the modem’s
telephone book.
To dial a number using AT commands, enter ATD, followed by the telephone number and a
carriage return. Example: ATD5551234<CR>
AT D S n,
ATDS=n, or
AT
*
DSn,
AT
*
DS=n
Dial From
Stored
#=
n
Dialing a Stored Telephone number (n=1-9)
Dial telephone number stored in address
n
. Before using this option, enter a telephone number
into the modem address book. See AT&Z, AT
*
CN to learn how to enter telephone numbers.
If you enter ATDS or ATDS= without a number following, the modem dials the number in
Address 1.
To dial a number using AT Commands, enter ATDS, ATDS=, or AT
*
DS followed by the
telephone book address number and a carriage return. For example: ATDS2<CR>
NOTE
: You can include dial modifiers to instruct the modem how and when to dial a call. The
dial modifiers used with the AT ACU are described in Table A-4.
AT E 0
Async Echo
=Off
Asynchronous Echo
The modem does not echo asynchronous commands to the DTE.
ATE1 =On The modem echoes asynchronous commands to the DTE.
TEST
Busy Out Test
AT H 0 =End Test If busy out is enabled, ATH0 disconnects the busy out condition. In “escape mode” (modem
has transitioned to command state from data state), ATH0 disconnects the modem.
AT H 1 =Busy Out Makes the modem appear busy to incoming calls.
Gray shading indicates country-specific options. See Appendix C for your country’s options.