1. SMS The Telecom Source 10 Slide Technology Series

6. SM-MT Service - SMS-DELIVER TPDU Structure PDU Type: Bits MTI bit 1 = 0 bit 0 = 0 1-10 Octets 1 Octet 2-12 Octets 1 Octet 1 Octets 7 Octets 1 Octet 0-140 Octets SCA PDU- Type OA PID DCS SCTS UDL UD 7 6 5 4 3 2 1 0 RP UDHI SRI MMS MTI User Data - Data Field of the Short Message UD User Data Length - Parameter indicating the length of the UD-field UDL Service Centre Time Stamp - Parameter identifying the time when the SMSC received the message SCTS Data Coding Scheme - Parameter identifying the coding scheme within the User Data (UD) DCS Protocol Identifier - Parameter indicating the SMSC how to process the Short Message (e.g. Fax) PID Originator Address - Address of the originating SME OA Message Type Indicator - Parameter describing the message type 00 means SMS-Deliver MTI More Messages to Send - Parameter indicating whether or not there are more messages to send MMS Status Report Indication - Parameter indicating if the SME has requested a status report SRI User Data Header Indicator - Parameter indicating that UD field contains a header UDHI Reply Path - Parameter indicating that Reply Path exists RP Protocol Data Unit Type PDU Type Service Centre Address - Telephone number of the Service Centre SCA Description Parameter

7. SM-MO Service - SMS-SUBMIT TPDU Structure Bits PDU Type: MTI bit 1 = 0 bit 0 = 1 7 4 3 2 RP UDHI SRR User Data - Data Field of the Short Message UD User Data Length - Parameter indicating the length of the UD-field UDL Service Centre Time Stamp - Parameter identifying the time when the SMSC received the message SCTS Data Coding Scheme - Parameter identifying the coding scheme within the User Data (UD) DCS Protocol Identifier - Parameter indicating the SMSC how to process the Short Message (e.g. Fax) PID Destination Address - Address of the destination SME DA Message Reference - Successive numbers (0…255) of all SMS-SUBMIT frames sent by the MS. MR Message Type Indicator - Parameter describing the message type 01 means SMS-Submit MTI Reject Duplicates – parameter indicating if SMSC will accept a message with same MR and DA from the same OA RD Validity Period Format - Parameter indicating whether or not the VP field is present VPF Status Report Request - Parameter indicating if the MS has requested a status report SRR User Data Header Indicator - Parameter indicating that UD field contains a header UDHI Reply Path - Parameter indicating that Reply Path exists RP Protocol Data Unit Type PDU Type Service Centre Address - Telephone number of the Service Centre SCA Description Parameter 6 5 1 0 VPF 1-10 Octets 1 Octet 1 Octet 2-12 Octets 1 Octet 1 Octets 0, 1 or 7 Octets 1 Octet 0-140 Octets SCA PDU- Type MR DA PID DCS VP UDL UD RD MTI

8. Message Flow SM-MT Message Transfer sendRoutingInfo- Delivery ForShortMsg forwardShortMessage sendInfoFor- MT-SMS Message Transfer Deliver Report SM-Delivery ReportStatus Report SMSC GMSC HLR MSC VLR Page Authenticate MS Note: ETSI/GSM MAP sendRoutingInforForShortMsg equivalent in IS41 (North American standard) is SMSrequest mechanism, while forwardShortMessage is Short Message Delivery-Point-to-Point (SMD-PP)

9. Message Flow SM-MO Message Transfer Delivery forwardShortMessage sendInfoFor- MO-SMS Message Transfer Delivery Report Delivery Report Report SMSC SMS-IWMSC HLR MSC VLR Access Request Authenticate MS Note: ETSI/GSM MAP forwardShortMessage equivalent in IS41 (North American Standard) is Short Message Delivery-Point-to-Point (SMD-PP) mechanism

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