Owner manual

GM862-QUAD / PY Software User Guide
1vv0300747 Rev. 3 - 10/07/07
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 62 of 96
3.5.1.5 Set Text Mode Parameters (only in TEXT mode)
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:
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 (only value supported)
RD reject duplicates parameter
0 - don't 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
1 - RP set
- Validity Period numerical if in relative format or string if in absolute format
This parameter represents the validity period for the SMS after which the message should be
disregarded instead of being delivered.