Chapter 3: AT Commands Reference
December 31, 2007 AT Commands Reference Manual 3-17
•ATDL; (Voice) dials the exact number that was last dialed, including the DTMF tones
sent.
•ATDL (Data/Fax) dials the addressing information only (comma and tones are
discarded).
•If ATDL is sent before any Dial command was issued (mainly after Power On, when the
last number is an empty field), the G24 will return NO CARRIER, as mentioned in the
ITU V.25-ter standard.
Example
atdl //Last called number is "035658278"
ATDL: "035658278"
OK //DATA call
atdl;
ATDL: "035658278"
OK
OK //VOICE call
atdl //Last called number is "035658278,123,78;"
ATDL: "035658278"
CONNECT //DATA call
atdl; //Last called number is "035658278,123,78"
ATDL: "035658278p123p78"
OK
OK //VOICE call
1 2 3 //Sent as DTMF tones
... //Pause
7 8 //Sent as DTMF tones
H, Hang-up Call
This command hangs up a call. The G24 terminates the call whether it is a data or voice call, and
whether it is an incoming, originating, waiting, or connected call.
A NO CARRIER message is returned to the terminal before the regular OK approval.
Note: To terminate (hang-up) a MO data/fax call while call is placed: Any character sent from
the terminal to the G24 causes the Data/Fax call termination, and NO CARRIER is sent
from the G24 to the terminal.
To terminate a held Voice call or to terminate a call out of a MTPY call, refer to “+CHLD,
Call Related Supplementary Services Command” on page 3-25.
The following table shows the call states of the H command.
Call State Response/Action
IDLE Error 3 ("operation not allowed") or OK, depending
on a FLEX bit
Single Active Call released
MTPY Active Call released (all calls)
Incoming call (RING) Call released
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