Lucent Technologies Comcode 108678723 manual Overview, Organization

DEFINITY ECS Release 8.2 ATM Installation,	Issue 1
Upgrades, and Administration 555-233-124	April 2000
About This Book
Overview	vi

Overview

The DEFINITY ATM (asynchronous transfer mode) combines portions of the DEFINITY platform with an ATM switch platform that meets specific criteria. DEFINITY ATM offers both intraswitch and interswitch ATM solutions. The intraswitch solution is called the ATM port network connectivity, or ATM-PNC, and the interswitch solution is called ATM circuit emulation service, or ATM-CES. ATM-PNC is only available on the R6.3r or later platform.

ATM-PNC provides an alternative to either the direct connect or center stage switch configurations for connecting the processor port network (PPN) to one or more expansion port networks (EPNs). ATM-PNC is available with four DEFINITY ECS reliability options—standard, high, ATM network duplication, and critical. Customers must choose whether they want direct connect, CSS, or ATM-PNC. It is not possible to mix configurations in the same R8r platform.

ATM-CES lets the DEFINITY ECS emulate an ISDN-PRI trunk on an ATM facility.

These virtual trunks can serve as integrated access, tandem, or tie trunks.

ATM-CES emulates up to 8 ISDN spans on a single OC-3/STM-1 ATM interface.

ATM wide area network (ATM-WAN) extends the port network connectivity beyond a single ATM switch over large distances. This allows you to use either a private ATM network, public WAN or a combination of both. Several networked ATM devices can be used as effectively as a single ATM switch for inter-port network connectivity.

The DEFINITY ECS switch can connect through several ATM switch types, many of which are sold through Lucent’s InterNetworking Systems (INS) channel, formerly know as DNS. Also, DEFINITY ECS switches are designed to work seamlessly with non-Lucent ATM switches that meet ATM standards set by the European Union.

For a current list of Lucent switches, go to the Infohub Web site

(http://infohub.mt.lucent.com/) and select Product Index. Examples include the following equipment:

■Lucent Cajun M770 ATM switch

■Lucent PacketStar AC 60 or PSAX1250 access concentrators

Organization

This book contains 6 chapters and 2 appendices:

■Chapter 1, ‘‘Preparing for Installation and Upgrades’’describes the preparation necessary before an installation and upgrade, including

—network design considerations, including SVCs generated and network impacts that can restrict ATM switch