Synchronous Data Link Control Overview

Synchronous data link control (DLCSDLC) is one of the generic data link controls.

It provides an access procedure for transparent and code-independent information interchange across teleprocessing and data networks, as defined in the SDLC Concepts document.

The list of architecture supported by DLCSDLC includes:

  • Normal disconnected mode (NDM) and normal response mode (NRM)
  • Two-way alternate (half-duplex) data flow
  • Secondary station point-to-point, multipoint, and multi-multipoint configurations
  • Primary station point-to-point and multipoint configurations
  • Modulo 8 transmit-and-receive sequence counts
  • Nonextended (single-byte) station address.

For more information about DLCSDLC controls, see: