Chapter 1: Introduction

Software Overview

The software package supports up to four 5536-DM boards installed in a system. It handles three types of ports:

ISDN(x), for ISDN communications using RAS

DM(x), for digital modem communications using RAS

COM(x), for digital modem communications using COM ports

The software package includes drivers, utilities, and a RAS management tool.

Drivers

The software package includes the following drivers:

The Base driver for Windows NT is the basic driver required to support the board.

The Serial driver manages COM port emulation on the board. It supports digital modem communications by enabling ISDN B channels to emulate COM ports. It is installed with the base driver.

The RAS support drivers support Microsoft Remote Access Service. They enable the transport of TCP/IP, IPX/SPX, and NetBEUI protocols over ISDN and digital modem lines.

The RAS support driver can also extract the security information included in the packets exchanged at the beginning of the communication, during the authentication phase, and provide it to the SecurID support driver. The PPP authentication protocols supported for SecurID are PAP, CHAP, and MS-CHAP.

There are two types of RAS support drivers:

RAS support driver for ISDN communications

5536 PRI RAS Communications Controller Users Guide

5