'''Digital Data Communications Message Protocol''' ('''DDCMP''') wasis a [[communications protocol]] devised by [[Digital Equipment Corporation]] in [[1974]] to allow communication over point-to-point network links for itsthe company's [[DECnet|DECnet]] Phase I]] network protocol. ItThe couldprotocol useuses full or half [[duplex]] [[Synchronization|synchronous]] and [[Asynchronous communication|asynchronous]] links and allowed errors introduced in transmission to be detected and corrected. It was retained and extended for later versions of itsthe DECnet protocol.
=== References ===
* [http://telecom.tbi.net/ddcmp.txthtm DDCMPOverview of the protocol]
* [http://telecom.tbi.net/ddcmp.txt Protocol specification] (courtesy of [[Digital Equipment Corporation|DEC]])
