Synaccess Networks NP-0801DTM - Manual (Page 120)

3GPP TS 27.005 AT COMMANDS FOR SMS AND CBS
HSPA+ AT Commands Reference Guide 120
mode, setting is used by the same commands, but only when the length of the
SMSC address coded into the parameter equals zero.
Note: The current settings are stored through +CSAS.
Notes
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Reference: GSM 27.005.
Set Text Mode Parameters +CSMP
Set command selects values for additional parameters for storing and sending SMs when text mode is used
(AT+CMGF=1).
Read command reports the current setting in the format:
+CSMP: ,,,
Note: If the Validity Period Format (’s bit[4]bit[3]) is [00]—that is, Not Present— is represented as a
quoted empty string (“”).
Test command returns the OK result code.