| Subject | English | Thesaurus |
| abbr., comp., net. | Common Part Convergence Sublayer-Service Data Unit | CPCS-SDU |
| comp., net., abbr. | Data Stream Proxy Service | DSPS |
| abbr., comp., net. | Transport Protocol for Data services | TPD |
| IT, abbr. | Transport Service Data Unit | TSDU (OSI, OSI/RM) |
| telecom., abbr. | Transport Service Data Unit | TSDU |