Siemens TC37 Module At Command Reference page 135

AT Command Set
<bm>
<ds>
<bfr>
Unsolicited result Syntax of responses output when SMS is received:
code
+CMTI: <mem>,<index>
+CBMI: <mem>,<index>
+CMT: ,<length><CR><LF><pdu> Short message is output directly
+CBM: <length><CR><LF><pdu>
During each SMS or Cell Broadcast Messages the Ring Line goes Logic "1" for
one second.
TC3X_ATC_01_V04.00
2 SMS-DELIVERs, except class 2 messages and messages in
the message waiting indication group (store message) are
routed directly to the TE using unsolicited result code:
+CMT: ,<length><CR><LF><pdu> (PDU mode enabled)
+CMT: <oa>,, <scts> [,<tooa>, <fo>, <pid>, <dcs>, <sca>,
<tosca>, <length>] <CR> <LF> <data> (text mode enabled)
3 Class 3 SMS-DELIVERs are routed directly to the TE using
unsolicited result codes defined in <mt>=2. Messages of other
data coding schemes result in indication as defined in <mt>=1.
Rules for storing received CBMs depend on the relevant data coding
method (refer to GSM 03.38 [2]), the setting of Select CBM Types
(+CSCB) and this value:
0 No CBM indications are routed to the TE.
2 New CBMs are routed directly to the TE using unsolicited
result code: +CBM: <length><CR><LF><pdu> (PDU mode
enabled) or +CBM: <sn>,<mid>,<dcs>,<page>,<pages><CR>
<LF><data> (text mode enabled).
3 Class 3 CBMs are routed directly to TE using unsolicited result
codes defined in <bm>=2.
0 No SMS-STATUS-REPORTs are routed to the TE.
1 SMS-STATUS-REPORTs are routed to the TE using
unsolicited result code: +CDS: <length><CR><LF><pdu> (PDU
mode enabled) or +CDS: <fo>,<mr>,[<ra>],[<tora>],<scts>,<dt>,
<st> (text mode enabled)
2 If SMS-STATUS-REPORT is routed into ME/TA, indication of
the memory location is routed to the TE using unsolicited result
code: +CDSI: <mem>,<index>
1 TA buffer of unsolicited result codes defined within this
command is cleared when <mode> 1...3 is entered.
Page 135 of 204
Indicates that new message has been
received
Indicates that new CB message has been
received
Cell broadcast message is output directly
29.05.2002