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| Subject | English | Thesaurus |
| telecom., abbr. | Mobile Station Integrated Services | MSIS |
| telecom., abbr. | Mobile Station Integrated Services Directory | MSISD |
| telecom., abbr. | Mobile Station Integrated Services Directory Number | MSISDN |
| abbr., IT | Single Attached Station; Secure Authentication Services | SAS |
| abbr., scottish | Station Services Flight | SSF (UK Royal Air Force) |