| Subject | English | Thesaurus |
| IT, abbr. | Common Part Convergence Sublayer | CPCS (ATM) |
| abbr., IT | Common Part Convergence Sublayer | CPCS |
| abbr., comp., net. | Common Part Convergence Sublayer-Service Data Unit | CPCS-SDU |
| IT, abbr. | Common Part Indicator | CPI (ATM) |
| mil., abbr. | Common Part Indicator | CPI |
| mil., abbr. | Common Part User | CPU |