ADTRAN NxT1 HSSI/V.35 Functional Description, Features, NXT1 HSSI/V.35 Module Specifications

Chapter 1. Introduction

When combined with the supported ATLAS 800 Series base units and, optionally, one or more Quad T1/PRI or T3 Modules, the NxT1 HSSI/V.35 Module can implement high-speed point-to-point connectivity), combining multiple T1 circuits into one logical channel on the HSSI/V.35 interface.

FUNCTIONAL DESCRIPTION

The NxT1 HSSI/V.35 Module installs in any available option slot in the supported ATLAS 800 Series units. You can view the status of the module itself, as well as the circuits to which it interfaces, from the front panel (ATLAS 800PLUS only). Additional status information is available via the terminal menus, accessible through either a VT-100 terminal connected to the ATLAS 800 Series control port, or via a Telnet session established through the unit’s Ethernet port. Use the terminal menu to configure the NxT1 HSSI/V.35 Module and to download application software.

FEATURES

Features of the NxT1 HSSI/V.35 Module are listed here:

•Standard SCSI-II 50-pin connector for HSSI interface

•Optional V.35 interface using adapter cable (ADTRAN P/N 3125I081)

•Hot swappable

•Maximum distance 6,000 feet (DS-1), 655 feet (DSX-1) when using 24 gauge conductor

NXT1 HSSI/V.35 MODULE SPECIFICATIONS

Each T1 port of the NxT1 HSSI/V.35 Module conforms to the following specifications:

Line Rate

1.544 Mbps ± 75 bps

Framing

D4, SF or ESF per ANSI t1.403 and AT& T TR 54016

Line Coding

•B8ZS (Bipolar Eight Zero Substitution)

•AMI (Alternate Mark Inversion)

Alarms

Loss of Signal (LOS), Red, Yellow, Blue

20 NxT1 HSSI/V.35 Module User Manual 61200771L1-1