Specifications

Smart Machine Smart Decision
SIM900_AT Commands Manual_V1.07 243 2012.12.10
<year>,<month>,<day>,<hour
>,<min>,<sec>, "<time
zone>",<dst>
+CTZV: "<time zone>"
Refresh network time zone by network.
DST: <dst>
Refresh Network Daylight Saving Time
by network.
+CEXTHS:
<mode>,<headset attach>
Indicates whether a headset has been
attached or not (require hardware
support).
AT+CEXTHS=1
+CEXTBUT:
<mode>,<headset button
press>
Indicates whether a headset button has
been pressed or not (require hardware
support).
AT+CEXTBUT=1
+CSMINS: <n>,<SIM
inserted>
Indicates whether SIM card has been
inserted.
AT+CSMINS=1
+CDRIND: <type>
Indicates whether a CS voice call, CS
data has been terminated.
AT+CDRIND=1
+CHF: <state>
Indicates the current channel. AT+CHF=1
+CENG:
<cell>,"<arfcn>,<rxl>,<rxq>,
<mcc>,<mnc>,<bsic>,<cellid
>,<rla>,<txp>,<lac>,<TA>"
Report of network information.
AT+CENG=<mod
e>[,<Ncell>]
<mode>=2
+CENG:
<cell>,<mcc>,<mnc>,<lac>,<
cellid>,<bsic>,<rxl>
Limited report of network information.
AT+CENG=<mod
e>[,<Ncell>]
<mode>=3
MO RING
Shows call state of mobile originated
call: the call is alerted. AT+MORING=1
MO CONNECTED
Shows call state of mobile originated
call: the call is established.
AT+MORING=1
+CPIN:<code>
Indicates whether some password is
required or not.
+CPIN: NOT READY SIM Card is not ready.
+CPIN: NOT INSERTED SIM Card is not inserted.
AT+ CP IN
+SKPD: <Keypad Value>,
<Keypad Status>
Indicates the action of keypad and the
value of it.
AT+SKPD=1
+CGURC: <event>
Following particular call state
transitions, multiple notifications may
occur for the same transition, describes
the current call state.
AT+EXUNSOL="
UR",1
+CSQN: <rssi>,<ber>
Displays signal strength and channel bit
error rate
when <rssi>,<ber>values change.
AT+EXUNSOL="
SQ",1
+SIMTONE: 0
The generated tone playing is stopped or
completed.
AT+SIMTONE
+STTONE: 0
The SIM Toolkit tone playing is stopped
or completed.
AT+STTONE