User Manual

+CDSI: "SR",8
When the device is set to operate with Text SMS not with PDU, the SMS parameters that
usually reside on the header of the PDU must be set apart with the command +CSMP.
 The parameters to be set are:
 Message Format
 Validity Period
 Protocol Identifier
 Data Coding Scheme
The meaning and format of the parameters is:
Message format, like defined for the first octet of message according to GSM 3.40/23.040:
The format is an 8-bit parameter divided into 6 fields and then reported as an integer:
b7
b6
b5
b4
b3
b2
b1
b0
RP
UDHI
SRR
VPF
RD
MTI
Where
MTI message type parameter:
0 1 - SMS Submit
0 1 - SMS DELIVER
RD rejects duplicates parameter
0 – do not reject duplicates SMS in SC
1 - reject duplicates on SC
VPF validity period format
0 0 - Validity period NOT present
1 0 - VP integer represented (relative)
1 1 - VP semi octet represented (absolute)
0 1 - reserved
SRR status report request
0 - status report not requested
1 - status report requested
UDHI user data Header Information
0 - No Header on PDU
1 - Header present on PDU
RP reply path
0 - RP not set