Specifications

Smart Machine Smart Decision
SIM900_AT Commands Manual_V1.07 118 2012.12.10
Response
+CSDH: <show>
OK
Read Command
AT+CSDH?
Parameter
See Write Command
Response
TA determines whether detailed header information is shown in text mode
result codes.
OK
Write Command
AT+CSDH=<sho
w>
Parameter
<show> 0 Do not show header values defined in commands +CSCA
and +CSMP (<sca>,<tosca>,<fo>,<vp>,<pid> and
<dcs>) nor <length>,<toda> or <tooa> in +CMT,
+CMGL, +CMGR result codes for SMS-DELIVERs and
SMS-SUBMITs in text mode
1 Show the values in result codes
Reference
GSM 07.05
Note
4.2.15 AT+CSMP Set SMS Text Mode Parameters
AT+CSMP Set SMS Text Mode Parameters
Response
+CSMP: (list of supported <fo>s),(list of supported <vp>s),(list of
supported <pid>s),(list of supported <dcs>s)
OK
Test Command
AT+CSMP=?
Parameters
See Write Command
Response
+CSMP: <fo>,<vp>,<pid>,<dcs>
OK
Read Command
AT+CSMP?
Parameters
See Write Command
Write Command
AT+CSMP=[<fo
>[,<vp>,<pid>,<
dcs>]]
Response
TA selects values for additional parameters needed when SM is sent to the
network or placed in a storage when text mode is selected (+CMGF=1). It is
possible to set the validity period starting from when the SM is received by
the SMSC (<vp> is in range 0... 255) or define the absolute time of the
validity period termination (<vp> is a string).