Chapter 3: AT Commands Reference
April 15, 2008 G24-L AT Commands Reference Manual 3-11
Call Control AT Commands
D, Dial Command
This command places a DATA/VOICE call on the current network.
The default call type is a data call (CSD).
There must be an explicit request in order to make a VOICE call.
If a DATA call was originated and answered by the remote side, a "OK" notification is sent to the
terminal from the G24-L, and it moves to the online Data state.
For more information about call failure, use the AT+CEER command, described in “+CEER,
Extended Error Report” on page 3-213.
Note: If there is an active voice call and the terminal sends another ATD voice call command to
the G24-L, the active call is put on hold and the new number is called.
Command Response/Action
ATD<number>[;]
VOICE CALL:
1st response - Voice call place begins
OK
2nd response - Voice call connected:
OK
DATA:
2nd response only - Data call connected
CONNECT
When MO call fails:
1. Connection Failure - NO CARRIER or BUSY or NO ANSWER
2. General Failure - ERROR
3. Security reason (such as SIM not present) - OPERATION NOT
ALLOWED
4. Unknown reason - UNKNOWN CALLING ERROR
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