Meaning of CHANNEL in English
A transmission path or circuit between two points. It is usually the smallest sub-division of a transmission system, as in a single channel in ISDN is a 64 kilobit unit of this digital telephone service. ISDN BRI offers two channels of bearer bandwidth, and ISDN PRI offers 23 channels available for data transmission.
DAX English glossary of key connectivity terms. Английский глоссарий основных терминов по коммуникациям DAX. 2012