Chapter 5 – Call Control Commands
Multi-Tech Systems, Inc. Wireless GSM/GPRS AT Commands (Document Number S000293I) 20
Direct Dialing from a Phonebook (stored in the SIM card) can be performed with the following commands:
ATD> <index>; to call <index> from the selected phonebook (by the +CPBS command)
ATD> “BILL”; to call “BILL” from the selected phonebook
ATD> mem <index> allows direct dialing from a phonebook number
<mem> is SM, LD, MC, ME, RC, MT or SN.
See +CPBS command
Syntax: ATD<nb>[<I>][;]
ATD>[<mem>]<index>[<I>][;]
ATD>[<mem>]<name>[<I>][;]
Command Possible responses
AT+CPBS?
Note: Which phonebook is selected ? +CPBS:”SM”,8,10
Note: ADN phonebook is selected, 8
locations are used and 10 locations are
available
ATD>SM6;
Note: Call index 6 from AND phonebook OK
Note: Call succeeds
When the FDN phonebook has been locked, only numbers beginning with the digits of FDN
phonebook entries can be called.
For example, if “014629” is entered in the FDN phonebook all the phone numbers beginning with these
6 digits can be called.
The CLIR supplementary service subscription can be overridden for this call only.
“I” means “invocation” (restrict CLI presentation).
“i” means “suppression” (allow CLI presentation).
Control of CUG supplementary service information by “G” or “g” is allowed for this call only. The
index and info values set with the +CCUG command are used.
An outgoing call attempt could be refused if the AOC service is active and credit has expired (NO
CARRIER).
When trying to set up an outgoing call while there is an active call, the active call is first put on hold,
then the call set up is carried out.
As per GSM 02.30, GSM sequences may be controlled using dial commands. These sequences can
contain “*”, “#”, but “;” is forbidden.
If the sequence is not supported or fails, +CME ERROR: <err> is returned. In the case, where the FDN
phonebook is activated, the sequences concerning call forwarding are allowed only if they are written in
the FDN. See Codes and Values Appendix for the list of supported sequences.
Command Possible responses
ATD*#21#
Note: Check any call forwarding status +CCFC: 0,7
Note: No call forwarding
ATD**61*+33146290800**25#
Note: Register call forwarding on no reply, with no reply
timer fixed at 25 s.
OK
Note: done
ATD*2#
Note: Bad sequence +CME ERROR 3
Description: The ATH (or ATH0) command disconnects the remote user. In the case of multiple calls, all calls are
released (active, on-hold and waiting calls). The specific ATH1 command has been appended to
disconnect the current outgoing call, only in dialing or alerting state (i.e., ATH1 can be used only after
the ATD command, and before its terminal response (OK, NO CARRIER, ...)
It can be useful in the case of multiple calls.
Values: <n>
0 Ask for disconnection (default value)
1 Ask for outgoing call disconnection
Syntax: ATH<n>
Command Possible responses
ATH
Note: Ask for disconnection OK
Note: Every call, if any, is released
ATH1
Note: Ask for outgoing call disconnection OK
Note: Outgoing call, if any, is released