Specifications

Chapter 12 – Short Message Service (SMS) Commands
Multi-Tech Systems, Inc. AT Commands for EDGE (E1) Modems (S000474A) 227
12.15 AT+CSDH Show SMS Text Mode Parameters
Description: The write command sets whether or not detailed header information is shown in text mode result
codes.
Syntax: Test Command: AT+CSDH=?
Response: +CSDH: ((list of supported <show>s)
OK
Read Command: AT+CSDH?
Response: +CSDH:<show>
OK
Write Command: AT+CSDH=<show>
Response: +CSDH: <show>
OK
Parameter:
<show>
0 Do not show header values defined in commands AT+CSCA and AT+CSMP (<sca>,
<tosca>,<fo>,<vp>, <pid> and <dcs>) nor <length>, <toda> or <tooa> in “+CMTI”, AT+CMGL,
AT+CMGR result codes for SMS-DELIVERs and SMS-SUBMITs in text mode; for SMS-
COMMANDs in +CMGR result code, do not show <pid>,<mn>,<da>, <toda>, <length> or
<cdata>. Default. This is the factory default value and can be restored to "0" with AT&F. This is
the default value if the parameter is omitted (0 will be assumed).
1 Show the values in result codes.
Notes:
• This command is PIN protected.
• This command is supported in airplane mode.
12.16 AT+CSMP Set SMS Text Mode Parameters
Description: The write command selects values for additional parameters needed when the short message is
sent to the network or placed in a storage and when text format message mode is selected.
It is possible to set the validity period starting from the time when the short message is received
by the SMSC (<vp> is in range 0...255) or to define the absolute time of the validity period
termination (<vp> is a string). The format of <vp> is given by <fo>. If the TA supports the
enhanced validity period format, it will be given as a hexadecimal coded string (e.g., <pdu>) with
quotes.
Syntax: Test Command: AT+CSMP=?
Response: OK
Read Command: AT+CSMP?
Response: +CSMP:<fo>, <vp>/ <scts>, <pid>, <dcs>
OK
Write Command: AT+CSMP=<fo>[, <vp>/<scts>[, <pid>[, <dcs>]]]
Response: +CSMP: <index>
OK
If sending fails:
ERROR
+CMS ERROR: <err>
Parameters:
<fo>
First Octet
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.
0....255 Default = 17. This is the factory default value and can be restored to "17" with AT&F.
<vp>
Depending on SMS-SUBMIT <fo> setting: GSM 03.40 TP-Validity-Period either in integer format or in time string
format (refer <dt>).
0....255 Default = 167. This is the factory default value and can be restored to "167" with AT&F.