Data Sheet

SIM900 AT Commands Set
SIM900R01_ATC_V1.00 149 15.01.2010
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Parameters
<exunsol> string type(string should be included in quotation marks).
values currently reserved by the present document
“SQ” Signal Quality Report
Displays signal strength and channel bit error rate (similar
To AT+CSQ) in form +CSQN: <rssi>,<ber>when values change.
“FN” forbidden network available only
When returning to a non- registered state this indicates whether
All the available PLMNs are forbidden.
“MW” SMS Message waiting
On receiving an SMS (as indicated by the +CMTI indication) the
SMS is decoded and checked to see if it contains one or more of the
message waiting indications (i.e. voicemail, email, fax etc). If so, an
unsolicited indication is shown in the form for each message type:
+CMWT: <store>,<index>,<voice>,<fax>,<email>,<other>
Where <store> is the message store containing the SM, index is the
message index and <voice>,<email>,<fax>,<other> contain the
number of waiting messages (with ‘0’ defined as clear indication,
non-zero for one or more waiting messages) or blank for not
specified in this message.
“UR” Unsolicited result code
Produces an unsolicited indication following particular call state
Transitions. Multiple notifications may occur for the same transition
+CGURC: <event>
Where <event> describes the current call state:
<event>
0 Active call terminated, at least one held call remaining
1 Attempt to make an Mobile Originated call
2 Mobile Originated Call has failed for some reason
3 Mobile Originated call is ringing
4 Mobile Terminated call is queued (Call waiting)
5 Mobile Originated Call now connected
6 Mobile Originated or Mobile Terminated call has disconnected
7 Mobile Originated or Mobile Terminated call hung up
8 Mobile Originated call to non-emergency number in emergency
mode
9 Mobile Originated call no answer
10 Mobile Originated call remote number busy
“BC” Battery Charge
Displays battery connection status and battery charge level(similar
To AT+CBC) in form +CBCN:<bcs>,<bcl> when values change.