Specifications

SIM900 AT Command Manual
SIM900_AT Command Manual_V1.03 104 12/24/2010
- if TE character set other than "HEX" (refer Command +CSCS
in GSM 07.07): ME/TA converts GSM alphabet into
current TE character set according to rules of Annex A
- if TE character set is "HEX": ME/TA converts each 7-bit
character of GSM alphabet into two IRA character
long hexadecimal number
- if <dcs> indicates that 8-bit or UCS2 data coding scheme is
used: ME/TA converts each 8-bit octet into two IRA
character long hexadecimal number
<dcs> depending on the Command or result code: GSM 03.38 SMS
Data Coding Scheme (default 0), or Cell Broadcast Data
Coding Scheme in integer format
<fo> depending on the Command or result code: first octet of GSM
03.40 SMS-DELIVER, SMS-SUBMIT (default 17),
SMS-STATUS-REPORT, or SMS-COMMAND (default 2)
in integer format
<length> integer type value indicating in the text mode (+CMGF=1)
the length of the message body <data> (or <cdata>) in
characters; or in PDU mode (+CMGF=0), the length of the
actual TP data unit in octets (i.e. the RP layer SMSC address
octets are not counted in the length)
<mid> GSM 03.41 CBM Message Identifier in integer format
<oa> GSM 03.40 TP-Originating-Address Address-Value field in
string format; BCD numbers (or GSM default alphabet
characters) are converted characters of the currently selected
TE character set (specified by +CSCS in TS 07.07); type of
address given by <tooa>
<pdu> In the case of SMS: GSM 04.11 SC address followed by
GSM 03.40 TPDU in hexadecimal format: ME/TA converts
each octet of TP data unit into two IRA character long
hexadecimal number (e.g. octet with integer value 42 is
presented to TE as two characters 2A (IRA 50 and 65)). In
the case of CBS: GSM 03.41 TPDU in hexadecimal format.
<pid> GSM 03.40 TP-Protocol-Identifier in integer format
(default 0)
<sca> GSM 04.11 RP SC address Address-Value field in string
format; BCD numbers (or GSM default alphabet characters)
are converted to characters of the currently selected TE
character set (specified by +CSCS in TS 07.07); type of
address given by <tosca>
<scts> GSM 03.40 TP-Service-Centre-Time-Stamp in time-string
format (refer <dt>)
<stat> 0 "REC UNREAD" Received unread messages
1 "REC READ" Received read messages