RC224ATL/224ATLV
4.0 AT Commands
EmbeddedModem Family
Table 4-2. AT Command Set Summary (2 of 5)
Command
Sn
Function
Default
Parameters/Description
Establishes S-Register n as the last register accessed.
n = v Sets S-Register n to the value v.
n? Reports the value of S-Register n.
Select S register as default
Range: n = 0-27
—
n
Sn =
Sn?
Parameters: none
Range: n = 0-27 (register
no.)
—
—
Writes to an S Register. Sr=x sets register “n” to the value “x”.
Configuration registers are provided to retain modem
configuration parameters. The contents of these registers can be
modified with this command.
x=0-255 (value)
Parameters: none
Range: n = 0-27
Reads an S register. Sn? causes the contents stored in register
“n” to be returned.
T
Force DTMF dialing
Report codes form
—
—
Vn
n = 1
n = 0 Result code is sent as a digit.
n = 1 Result code is sent as ASCII text.
Xn
Extended result codes
n = 4
n = 0 Basic set of result codes 0-4 are enabled. The modem
blind dials and sends the appropriate connect result code
once a satisfactory connection is established. Dial tone
and busy are not recognized.
n = 1 Result codes 0-5 and 10 are enabled. The modem blind
dials and sends the appropriate connect result code once
a satisfactory connection is established. Dial tone and
busy are not recognized.
n = 2 Result codes 0-6 and 10 are enabled; dial tone detected.
The modem waits for a dial tone before dialing, then
sends the appropriate result code once a satisfactory
connection is established. The busy result code is sent if
a busy signal is detected.
n = 3 Result codes 0-5, 7 and 10 are enabled; busy signal
detected; dial tone not detected. The modem blind dials
and sends the appropriate connect result code once a
satisfactory connection is established. The busy result
code is sent if a busy signal is detected.
n = 4 Result codes 0-7 and 10 are enabled; busy signal and
dial tone detected. The modem waits for a dial tone
before dialing, then sends the appropriate result code
once a satisfactory connection is established. The NO
DIALTONE result code is sent if the dial tone is not
detected within 5 seconds. The BUSY result code is sent
if a busy signal is detected.
Yn
Long space disconnect
Soft reset and restore profile
RLSD (DCD) option
n = 0
n = 0
n = 0
n = 0 Disables long space disconnect.
n = 1 Enables long space disconnect.
Zn
n = 0 Soft reset. Restores stored profile 0.
n = 1 Soft reset. Restores stored profile 1.
&Cn
n = 0 RLSD remains ON at all times.
n = 1 RLSD follows the state of the carrier.
D224ATLVDSC
Conexant
4-3
CONEXANT [ CONEXANT SYSTEMS, INC ]
