| Subject | English | Italian |
| IT | data-link control | controllo del collegamento dati |
| commun. | high level data link control | protocollo HDLC |
| IT | high-level data link control | controllo a livello alto dei collegamenti di dati |
| commun., IT | high-level data-link control | controllo del collegamento dati ad alto livello |
| commun. | synchronous data link control | controllo di linea sincrona |
| commun. | synchronous data link control | controllo di collegamento per la trasmissione sincrona |
| comp., MS | synchronous data link control | Synchronous Data Link Control (A type of link service used for managing synchronous data transfer over standard telephone lines (switched lines) or leased lines. The data transmission protocol most widely used by networks conforming to IBM's Systems Network Architecture (SNA). SDLC is similar to the HDLC (High-level Data Link Control) protocol developed by the International Organization for Standardization (ISO)) |