User's Manual Part 1

54 AT Commands
Revision 1.8 P/N 90023363
This command is not a Hayes-compatible command. It is a public domain
method (TIES) and is only enabled with define
VG_TIES_ESC_SEQUENCE.
Syntax: +++<cr>
Parameters: None
Response: This command will return the string OK.
Example: +++AT <cr>
ATA
Description: ANSWER
This command sets the modem to answer the next call. The modem
sends an off-hook signal to the remote station. Any additional commands
on the same command line are ignored. The modem switches to data
mode and after call is released, returns to command mode.
This command can be stopped by receiving a character during execution,
except during some states of connection establishment such as
handshaking.
Syntax: ATA<cr>
Parameters: None
Response: If the connection is successful the modem will return the string:
CONNECT<text>
then switches to data mode. The <text> is only displayed if the command
ATX has been set to a value greater than 0.
When the modem releases the call and returns to command mode, it
returns the string:
OK
If no connection is made, the modem will return the string:
NO CARRIER
Example: ATA<cr>
ATD[<n>][mgsm>]
Description: DIAL NUMBER
This command will instruct the modem to originate a call to a dialable number.
The modem attempts to set up an outgoing call.
This command can be stopped by receiving a character during execution,
except during some states of connection establishment such as
handshaking.