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Chapter 1: Introduction
5536 PRI RAS Communications Controller Users Guide 5
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