Huawei MU509 At Command Interface Specification page 96

HUAWEI MU509 HSDPA LGA Module
AT Command Interface Specification
<MMS>: indicates whether there are more messages to be sent.
0: Nonexistent
1: Existent
<SRI>: indicates whether the SME (short message entity) has requested a state
report.
0: Nonexistent
1: Existent
<UDHI>: same as defined in the section "Message sending command".
<RP>: same as defined in the section "Message sending command".
<OA>: source address. Same as defined in SCA. Total 2–12Otects. Therefore, the
longest address in the OA segment contains 20 digits.
<PID>: protocol indication. Same as defined in the section "Message sending
command".
<DCS>: coding mode of user data. Same as defined in the section "Message sending
command".
<SCTS>: time chop of SMC, including year, month, day, hour, minute, second and
time difference. Time difference refers to the difference of time between the local time
and the Greenwich standard time.
<UDL>: user data length. Same as defined in the section "Message sending
command".
<UD>: The length of a specific user data depends on the UDL.
TEXT mode:
<stat>: message type. The default value is "REC UNREAD":
"REC UNREAD": unread SMS
"REC READ": read SMS
"STO UNSENT": stored and unsent SMS
"STO SENT": stored and sent SMS
"ALL": all SMS
<fo>: depending on the command or result code: first octet of 3GPP TS 23.040
SMS-DELIVER, SMS-SUBMIT (default value is 17), SMS-STATUS-REPORT, or
SMS-COMMAND (default 2) in integer format.
<mr>: 3GPP TS 23.040 TP-Message-Reference in integer format.
<ra>: 3GPP TS 23.040 TP-Recipient-Address Address-Value field in string format;
BCD numbers (or GSM 7 bit default alphabet characters) are converted to characters
of the currently selected TE character set (refer command +CSCS in 3GPP TS
27.007); type of address given by <tora>.
<tora>: TP-Recipient-Address Type-of-Address octet in integer format (when first
character of <ra> is + (IRA 43) the default value is 145, otherwise default is 129)<dt>
3GPP TS 23.040 TP-Discharge-Time in time-string format:
Issue 04 (2013-01-28)
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Short Message Service Commands
96