r6781-12 Conexant Systems, Inc., r6781-12 Datasheet - Page 48

• Manufacturer Part Number: r6781-12
• Description: Embedded Modem Family
• Manufacturer: Conexant Systems, Inc.

Table 4-2. AT Command Set Summary (1 of 5)
4-2
A/
A
AT
Bn
Cn
D
Dn
En
Fn
Hn
In
Ln
Mn
On
P
Qn
Command
Re-execute command
Answer a call
Command line prefix
Parameters: none
Select CCITT or Bell Mode
Parameters: n = 0,1
Carrier control
Parameters: n = 0,1
Dial modifier
Command echo
Parameters: n = 0,1
On-line character echo option
Parameters: n = 0,1
Disconnect (hang-up)
Parameters: n = 0,1
Identification
Parameters: n = 0,1,2,3
Speaker volume
Parameters: n = 0,1,2,3
Speaker control
Parameters: n = 0,1,2,3
Go on-line
Parameters: n = 0,1
Force pulse dialing
Quiet Result codes control
Function
—
n = 1
n = 1
n = 1
n = 1
n = 0
n = 0
n = 2
n = 1
n = 0
Default
—
—
—
—
—
—
—
Conexant
Attention Code. Precedes the command line except for +++
(escape) and A/ (repeat) commands.
n = 0
n = 1
Dial Command. D causes the modem to dial the number which
follows the D in the command line. Valid dial characteristics are 0
to 9, A to D, #, and *. Other valid dial modifier characters are “,”
P, R, S=n, T, W, “;”, @, and !.
n = 0
n = 1
n = 0
n = 1
n = 0
n = 1
n = 0
n = 1
n = 2
n = 3
n = 0
n = 1
n = 2
n = 3
n = 0
n = 1
n = 2
n = 3
n = 0
n = 1
n = 0
n = 1
Selects CCITT operation at 300 or 1200 bps during Call
Establishment and a subsequent connection.
Selects BELL operation at 300 or 1200 bps during Call
Establishment and a subsequent connection.
Disables command echo.
Enables command echo.
Returns ERROR result code.
Returns OK result code.
Modem on-hook (relay open).
Modem off-hook (relay closed).
Reports product identification code.
Calculates the ROM checksum.
Calculates the ROM checksum and compares it with the
prestored checksum. Reports "OK" if the calculated
checksum equals the prestored checksum or if the
prestored checksum value is FFh; otherwise reports
“ERROR”.
Reports the firmware version and ROM part number.
Low volume.
Low volume.
Medium volume.
High volume.
Speaker is always off.
Speaker is on during Call Establishment, but off when
receiving carrier.
Speaker is always on.
Speaker is on after dialing, until carrier is detected.
On-line state.
On-line state with equalizer retrain.
Enables result codes to the DTE.
Disables result codes to the DTE.
Parameters/Description
—
—
—
—
—
EmbeddedModem Family
D224ATLVDSC