At Commands Description - Digicom pocket GSM User Manual

PocketGSM
(ATV0), then the answer will not have the prefix <CR><LF> and will be ended with the
<CR> character.
To disable the answer messages use ATQ1 command.
If the syntax of the command is wrong, the modem sends the answer ERROR
If the syntax of the command is correct but some incorrect parameters are used, the
strings +CME ERROR: <Err> or +CMS ERROR: <SMSErr> are sent with different
error codes.
If the command has been successfully executed, the answer will be OK.
(In some cases, such as AT+CPIN? the modem will return the information requested
without OK).
[In the "Functional Examples", and in the "AT commands description", the characters <CR>
and <CR><LF> have been intentionally omitted.]

4.2. AT COMMANDS DESCRIPTION

4.2.1. GENERAL COMMANDS
ATA Answer an incoming call
When the modem receives a call, it sets the Ring Indicator signal and sends to the DTE
(e.g. PC) the RING string (or +CRING: <type> if AT+CRC=1). If the automatic answer is
disabled (ATS0=0), the ATA command enables the answer to an incoming call.
Command
ATA
ATD Dial command
This command will dial the number entered after the ATD string. When the modem detects
the carrier from the GSM base station, it will answer with the message CONNECT: at this
point the data transmission starts.
For further information on ATD command, see chapter "Functional Examples".
Possible answers
CONNECT
OK
4.2
AT Commands
Action
DATA call accepted
VOICE call accepted