| Subject | English | Russian |
| telecom. | primary interface | первичный интерфейс (oleg.vigodsky) |
| comp., MS | primary interface | основной интерфейс (Windows 8 ssn) |
| telecom. | primary interface line protocol | линейный протокол основного интерфейса (Cisco 3900 Series, 2900 Series, and 1900 Series Software Configuration Guide ssn) |