ADTRAN NxT1 HSSI/V.35 user manual Introduction, NXT1 HSSI/V.35 Module Overview

Page 19

Chapter 1 Introduction

NXT1 HSSI/V.35 MODULE OVERVIEW

The NxT1 HSSI/V.35 Module is a member of the ATLAS 800 family of integrated access products that supports aggregating point-to-point T1 bandwidth (from 2 to 8 T1s) to a single logical datastream available on the high speed serial interface (HSSI) of the module. The HSSI interface is delivered using a standard 50-pin SCSI-II connector. Alternately, an optional adapter cable may be purchased (ADTRAN P/N 3125I081) to convert the HSSI interface to a single V.35 interface when needed. When using the NxT1 HSSI/V.35 Module in a V.35 configuration, up to 4 T1s of aggregated bandwidth is supported.

The inverse multiplexing capacity of the module accommodates eight T1s, and the module automatically adjusts the data rate to the HSSI/V.35 port upon loss of one or more T1 circuits. In addition to the HSSI port, four T1 ports are included on the module itself, while alternate T1 ports can be provided using other ATLAS 800 T1 or T3 modules. The NxT1 HSSI/V.35 Module combines with the ATLAS 800 Series base units (ATLAS 800PLUS and ATLAS 890 only) and other ATLAS modules to support applications calling for increased point-to-point T1 bandwidth. Figure 1-1 shows a sample application of the NxT1 HSSI/V.35 Module.

Figure 1-1. NxT1 HSSI/V.35 System

61200771L1-1

NxT1 HSSI/V.35 Module User Manual

19

Image 19

Contents NxT1 HSSI/V.35 Module Page Save These Important Safety Instructions Affidavit Requirements for Connection to Digital Services Page Page SOC REN FIC Usoc Page Page Limited Product Warranty Customer Service, Product Support Information, and Training Post-Sale Support Table of Contents Appendix a Dedicated Maps Configuration List of Tables List of Tables Figure A-1 Dedicated Maps Menu List of FiguresList of Figures NXT1 HSSI/V.35 Module Overview IntroductionNXT1 HSSI/V.35 Module Specifications FeaturesFunctional Description Line or payload loopback Local and Remote NxT1 HSSI/V.35 Option Module Physical DescriptionBefore Installing the NXT1 HSSI/V.35 Module InstallationInstalling the NXT1 HSSI/V.35 Module Usoc RJ-48C WiringFailed Self-Test Operation Alarms Power UP and InitializationOverview OperationTerminal Menu Structure Modules Write security 3 Read security Read securityModules/Menu on Nor has a module been manually enabled for this option slot Displays the serial number of the module Displays the assembly revisionSembly revision Displays the part number of the moduleAccess this menu item Write security 2 Read security Option Module Write security 4 Read securityFunctionality between the DTE and the T1 interfaces Read Security 5 Write SecurityLA and LB RX Rate and TX Rate Restore Atlas Features Used with NXT1 HSSI/V.35 Module OptionsOperation Write security3 Read security5 Appendix a Dedicated Maps ConfigurationCREATE/EDIT Maps Write security3 Read security5 Read security5Security level 3 Read security Write security3 Read securityMenus NXT1 HssiT1 Trouble Code Service Appendix A. Dedicated Maps Configuration Index Index Index-48