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:

• DLCSDLC Device Manager Functions
• DLCSDLC Protocol Support
• DLCSDLC Programming Interfaces
• DLCSDLC Asynchronous Function Subroutine Calls.