| Fieldname | Meaning |
| TP-RP | Reply path. Parameter indicating that reply path exists. |
| TP-UDHI | User data header indicator. This bit is set to 1 if the User Data field starts with a header |
| TP-SRR | Status report request. This bit is set to 1 if a status report is requested |
| TP-VPF | Validity Period Format. Bit4 and Bit3 specify the TP-VP field according to this table (bit4 bit3): 00 - field not present; 10 - Relative format (one octet); 01 - Enhanced format (7 octets); 11 - Absolute format (7 octets) |
| TP-RD | Reject duplicates. Parameter indicating whether or not the SC shall accept an SMS-SUBMIT for an SM still held in the SC which has the same TP-MR and the same TP-DA as a previously submitted SM from the same OA. |
| TP-MTI | Message type indicator. Bits no 1 and 0 are set to 0 and 1 respectively to indicate that this PDU is an SMS-SUBMIT |