Table of Contents
Advertisement
AT Command Set Operation
Dial
D n
, or <
0 - 9
DTR On-to-Off transition
&D n
%D n
DSR operation in test
mode
Local DTE echo
E n
060R122-000
Issue 15
This command, followed by the phone number to be dialed, directs the modem to go
off-hook and dial the number. Commands other than dial modifiers must not be
placed after the D command. Any command that is placed after the D is either
ignored or interpreted as a dial command modifier.
T
Selects the numbers to be tone dialed.
Selects the numbers to be pulse dialed (if permitted by country code.
P
Selects a stored phone number to be recalled and dialed. The modem's default
Sn
when the AT command DS is issued is to dial the phone number stored in cell 0. ( n =
0 to 9)
Switches modem operation to handshake in the answer mode when this command
R
appears as the last character in the dial string.
Pauses dialing for a programmable length of time determined by S-Register 8.
Default is 2 seconds.
W
Directs the dialer to wait for a dial tone before continuing the dial string.
Directs the dialer to wait for a quiet answer before continuing the dial string.
@
Directs the dialer to place a 1/2 second hook-switch flash in the dial string.
!
;
Directs the dialer to return the modem to command mode.
Directs the dialer to redial the attempted dial string up to n times if the modem does
:n
not achieve data mode.
Directs the dialer to dial phone cell n if the modem fails to achieve data mode with the
Ln
current dial string.
Remote modem uses cell n for Security Callback.
\n
Causes the DTMF A tone to be generated.
A
B
Causes the DTMF B tone to be generated.
Causes the DTMF C tone to be generated.
C
D
Causes the DTMF D tone to be generated.
Tone or pulse dials the number. (A, B, C, and D are ignored in Pulse mode.)
Performs MNP10 link negotiations at 1200 bps (this call only). See *H.
J
K
Enables power level adjustment during MNP10 link negotiation (this call only).
)M
Refer to
command.
Controls the result of On-to-Off transitions of Data Terminal Ready.
Causes the modem to ignore Off transitions and forces internal DTR On.
&D0
&D1
Causes the modem to change to command mode when it senses an Off transition
during an established data link.
Causes the modem to recognize Off transitions of DTR and respond by hanging up.
&D2
&D3
&D2
Same as
, and also causes the modem to perform AT command
Specifies whether Data Set Ready (DSR) will be On or Off during an ANALOOP test.
DSR will turn On whenever the modem is operating an ANALOOP test.
%D0
%D1
DSR forced Off when in an ANALOOP test.
Controls the status of local echo.
Turns the local echo Off.
E0
E1
Turns the local echo On.
SpectraComm Dual V.34 Modem
Installation and Operation
AT Command Reference Tables
Z
.
4-5
Advertisement
Table of Contents
