Table 1: Result Codes Table
Digit
Verbose
Description
0
OK
Command executed without errors.
1
CONNECT
Connected to remote modem.
2
RING
Incoming Call.
3
NO CARRIER
Carrier from remote modem lost or never present.
4
ERROR
Error in the command line.
6
NO DIAL TONE
No dial tone detected within time out period.
7
BUSY
Busy signal detected.
8
NO ANSWER
Five seconds of silence not detected after ring back when @
dial modifier is used.
8.4 Basic AT Parameters
These commands control the basic configuration of the modem. The parameters can only be read
back by the AT&V command when in command state. The following table shows the command
format.
Table 2: Basic AT Parameters Table
Parameter
Description
E0
Do not echo commands in command state or in online state
E1
Echo commands in command state or in online state
I
Displays the product name:
LC-819
I2
Displays the product name and firmware revision number.
Q0
Return result codes
Q1
Do not return result codes
V0
Display result codes as numbers.
V1
Display result codes as words.
X0
Enable additional result code CONNECT. Disable dial tone and busy
detection.
X1
Enable additional result code CONNECT <rate>. Disable dial tone and
busy detection.
Z
Reset modem NV memory and reboot.
&C0
Carrier Detect (CD) always ON
&C1
CD on/off in accordance with the network connection status.
&C2
CD always on; Winks on channel disconnect.
&D0
Ignore Data Terminal Ready (DTR)
&D1
Enter Online Command state following ON-to-OFF transition of DTR.
&D2
Enter Command state following ON-to-OFF transition of DTR.
&F
Reset all modem parameters to default.
&V
Dump current configuration parameters
*For async data/fax settings, the dialtone detection settings do not apply.
**Factory default settings.
8.5 S-Registers
The value of an S-Register may be set by the following command line syntax:
ATS
n
=
xxx
where
n
is the register number and
xxx
is a decimal value. For instance, to set the register S0 to 3,
the command
ATS0=3
would be used. The following table describes some of the more
commonly used S-Registers.
