Chapter 3: AT Commands Reference
April 15, 2008 G24-L AT Commands Reference Manual 3-15
Note: When ATDL is issued after a dialed number with comma digit:
• 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-L 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-L 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-L causes the Data/Fax call termination, and NO CARRIER is sent
from the G24-L 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 3-23.
The following table shows the call states of the H command.
Call State Response/Action
IDLE Error 3 ("operation not allowed")
Single Active Call released
MTPY Active Call released (all calls)
Incoming call (RING) Call released
