Honeywell NX4S1 Installation Guide - Page 15
Introduction
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NetAXS™ NX4S1 Installation Introduction 2.0 Introduction 2.1 Access Control Overview An access control system protects and preserves an enterprise's resources by providing authentication, authorization, and administration services. Authentication is a process that verifies a user's identity. If the user is verified, the system then either grants or denies access to specific areas and resources. Administration includes the creation and modification of user accounts and access privileges. An access control system consists of hardware and software, usually configured in a network environment over a standard network protocol. Access control units, readers, door strikes, and video and other devices, for example, are configured to control and monitor the access to a company site. 2.2 NetAXS™ Access Overview A NetAXS™ access control system consists of a host system and NetAXS™ access control units that meet existing N-1000-III/IV specifications and that communicate with each other and with a variety of input and output devices over the RS-232 and RS-485 network protocols. See "System Configuration" on page 26 to view illustrations of the supported NetAXS™ system configurations. A NetAXS™ access control system is configured and maintained via either the host system or a web server using RS-232, RS-485, or Ethernet network protocols. This document describes how to install and configure the NX4L1 access control unit. NetAXS Access Control Unit NX4S1 Installation Guide, Document 800-00008, Revision A 5