Instruction manual

ATLAS 800 Series System Manual Option Modules Overview

System Description

HDLC Resource Module (P/N 1200222L1)

Certain ATLAS 800 Series applications require a larger number of High-level Data Link Control (HDLC)

controllers than the 35 supplied on the system controller module. The HDLC Resource Module contains

128 HDLC controllers and is used when the application requirements call for more HDLC controllers than

are provided with the other ATLAS 800 Series hardware components. The HDLC Resource Module

provides no physical interfaces.

Modem-16 Resource Module (P/N 1200181L1)

The Modem-16 Resource Module is a high-capacity card for the ATLAS 800 Series, capable of processing

16 modem or ISDN Calls. Modem or ISDN calls are presented to the ATLAS 800 Series via one or more

Primary Rate ISDN (PRI), Basic Rate ISDN (BRI), or T1 circuits. The Modem-16 Resource Module

combines with the Async-232 Module to enable dial-up access for up to 32 users. The Modem-16

Resource Module provides no physical interfaces.

Modem-24 Resource Module (P/N 1200782L1)

The Modem-24 Module contains 24 V.90-compliant modems that interface digitally to the network to

allow remote dial-in access to the ATLAS 800 Series chassis. The Modem-24 module terminates 24

56-Kbps dial-up data streams. This module allows remote access users to connect to the corporate facility

using analog dial-up lines.

Async-232 Option Module (P/N 1200182L1)

The Async-232 Module combines with the ATLAS 800 Series components to provide solutions for a

variety of wide area networking (WAN) applications. Providing 16 asynchronous EIA-232 data terminal

equipment (DTE) ports, the Async-232 Module serves as the interface to terminal servers and other DTE

equipment. Each port of the Async-232 Module can be configured to operate at any standard asynchronous

rate, up to 115.2 kbps. The Async-232 Module is only supported in dial-up applications (using the

Modem-24 Resource Module) and is not a valid interface for TDM data.