Data Link Connection Identifier (networking) (DLCI) A channel number which is attached to data frames to tell a Frame Relay network how to route the data. In Frame Relay, multiple logical channels are multiplexed over a single physical channel. The DLCI says which of these logical channels a particular data frame belongs to.
http://etinc.com/frmain.htm#whatsadlci. Last updated: 2000-02-13
