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| English | Thesaurus |
| Broadband Integrated Services Digital Network | B-ISDN (ISDN) |
| Integrated Services Digital Network User Part | ISDNUP |
| Integrated Services LAN | ISLAN (IEEE 802.9) |
| Mobile Station Integrated Services | MSIS |
| Mobile Station Integrated Services Directory | MSISD |
| Mobile Station Integrated Services Directory Number | MSISDN |
| Narrowband Integrated Services Digital Network | N-ISDN (ISDN) |