User's Manual Part 1

72 AT Commands
Revision 1.8 P/N 90023363
Response: This command will return the string OK.
Example: ATT<cr> OK
ATV
Description: VERBOSE
This command displays the modem’s result codes in terse or verbose
form.
In terse form, all result codes are represented by an error code number
and all text messages have only a carriage return (<cr>) character
appended to them.
In verbose form, all result codes are returned as words or sentences and
all text messages have a carriage return-line feed (<cr><lf>) character
pair before and after the text message.
Syntax: ATV[<n>]
Parameters: 0, 1
0 will set the response format to terse
1 will set the response format to verbose
Response: If the command has been set to 0, it will return the response:
0
If the command has been set to 1, it will return the response:
OK
Example: ATV=1<cr> OK
ATX
Description: ACCESS CONTROL
This command will specify whether or not the modem will attempt to
detect a dial tone and busy signal, and what type of result code is
returned.
Syntax: ATX[<n>]
Parameters: 0, 1, 2, 3, 4
where:
0 will set the modem to not detect the dial tone or the busy signal and
return the result code CONNECT.
1 will set the modem to not detect the dial tone or the busy signal and
return the result code CONNECT<additional session-specific text>.