Quectel EC25 Command Manual page 139

<mt> The rules for storing received SMS depend on its data coding scheme (refer to 3GPPTS
23.038) and preferred memory storage (AT+CPMS) setting, and the value is:
0
1
2
3
<bm> The rules for storing received CBMs depend on its data coding scheme (refer to 3GPP TS
23.038) and the setting of Select CBM Types (AT+CSCB), and the value is:
0
2
<ds> 0
1
2
<bfr> 0
1
NOTE
Unsolicited result code:
+CMTI: <mem>,<index>
+CMT: [<alpha>],<length><CR><LF><pdu>
+CBM: <length><CR><LF><pdu>
EC25&EC21_AT_Commands_Manual
mode) and flush them to the TE after reservation. Otherwise forward them directly
to the TE.
No SMS-DELIVER indications are routed to the TE.
If SMS-DELIVER is stored into ME/TA, indication of the memory location is routed
to the TE by using unsolicited result code: +CMTI: <mem>,<index>
SMS-DELIVERs (except class 2) are routed directly to the TE using unsolicited
result code: +CMT: [<alpha>],<length><CR><LF><pdu> (PDU mode enabled)
or +CMT: <oa>,[<alpha>],<scts>[,<tooa>,<fo>,<pid>,<dcs>,<sca>,<tosca>,
<length>]<CR><LF><data> (text mode enabled; about the parameters in italics,
please refer
<oa>,<scts>,<lang>,<fmt>,<length>,<prt>,<prv>,<type>,<stat><CR><LF><da
ta> (text mode for CDMA SMS). Class 2 messages result in indication as defined
in <mt>=1.
Class 3 SMS-DELIVERs are routed directly to TE by using unsolicited
codes defined in <mt>=2. Messages of other classes result in indication as
defined in <mt>=1.
No CBM indications are routed to the TE.
New CBMs are routed directly to the TE using unsolicited result code:
+CBM: <length><CR><LF><pdu>
+CBM: <sn>,<mid>,<dcs>,<page>,<pages><CR><LF><data> (text mode)
No SMS-STATUS-REPORTs are routed to the TE.
SMS-STATUS-REPORTs are routed to the TE using unsolicited result code:
+CDS: <length><CR><LF><pdu> (PDU mode)
+CDS: <fo>,<mr>,[<ra>],[<tora>],<scts>,<dt>,<st> (text mode)
If SMS-STATUS-REPORT is stored into ME/TA, indication of the memory location
is routed to the TE using unsolicited result code:
+CDSI: <mem>,<index>
TA buffer of unsolicited result codes defined within this command is flushed to the
TE when <mode> 1...2 is entered (OK response shall be given before flushing the
codes).
TA buffer of unsolicited result codes defined within this command is cleared when
<mode> 1...2 is entered.
EC25&EC21 AT Commands Manual
to AT+CSDH
Indicates that new message has been received
Short message is outputted directly
Cell broadcast message is outputted directly
LTE Module Series
command) or
(PDU mode);
^HCMT:
result
or
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