< communications > (SDLC) An IBM protocol .
A discipline conforming to subsets of the ADCCP of ANSI and the HDLC of the International Organization for Standardization . SDLC manages synchronous, code-transparent, bit-serial communication which can be duplex or half-duplex ; switched or non-switched; point-to-point , multipoint , or loop.
Compare Binary Synchronous Communication .
(1995-03-22)