CONTENTS Title Page Copyright Page Preface Part I Configuration 1 Configuring and Starting Up the VAX WAN Device Drivers 1.1 Configuring the VAX WAN Device Drivers 1.1.1 Running WANDD$CONFIGURE.COM 1.2 Configuring the DUP11 and DPV11 Synchronous Devices 1.3 Configuring the Second DSH32 Unit 1.4 Starting Up the VAX WAN Device Drivers 1.4.1 Errors in the Configuration and Startup Procedures Part II Specifications 2 The Devices 2.1 Synchronous Devices 3 The Drivers 3.1 The DECnet/OSI Datalink Driver 4 Modems FIGURES 4-1 State Changes Before and After Data Exchange 4-2 State Changes During Full-Duplex Data Exchange 4-3 State Changes During Half-Duplex Data Exchange TABLES 2-1 Types of Protocol Supported 2-2 Maximum Line Speeds (Kbits/s) for Synchronous Communications 2-3 Supported Synchronous Line Interface Specifications 3-1 Devices and Their Drivers