Interphase Tech RAS Communications Controller 5536 - Manual (Page 21)

1
5536 PRI RAS Communications Controller Users Guide 1
1 Introduction
Overview
The Interphase 5536 DM RAS communications controller is a
single-slot Peripheral Component Interconnect (PCI) add-on
board for PCI-based PCs, servers, and workstations. Two
versions of the 5536-DM RAS are available. One provides
single-port Primary Rate Interface (PRI) connectivity. The
other provides dual-port PRI connectivity. Both versions
include 12 digital modems onboard that can be logically
connected to 64-Kbps channels on Wide-Area Network
(WAN) lines.
On both versions of the board, the number of digital modems
can be expanded by adding up to three optional Digital Modem
modules (DM modules), each containing six digital modems.
Therefore, the board can include up to 30 digital modems.
(Detailed information about the DM modules is included in the
Read Me First documentation shipped with the modules.)
The 5536-DM RAS is powered by an IBM PowerPC™ 404CX
32-bit RISC processor at 66 Mhz. The modems use Central
Site Modem Digital Signal Processing (DSP) technology from
Rockwell Semiconductor Systems. This technology provides
robust support for data-intensive applications.
The 5536-DM RAS software uses the standard Microsoft®
Windows NT® operating system. It leverages the Remote
Access Service (RAS) features built into Windows NT server
platforms to seamlessly integrate RAS services into existing
LANs.