DEFINITY Communications System

CHAPTER 1: INTRODUCTION

7400B Data Module

 

User’s Guide

Page 1-3

 

 

Connector

Description

 

 

 

 

POWER/

This red LED lights as long as power is applied to the data module. This LED

 

TEST

flashes during any test mode, except the start-up self-test. It also flashes along

 

 

with the DATA LED if the connection with the PBX is lost.

 

DATA

This red LED lights to indicate the state of the CTS (Clear To Send) output lead

 

METERING

when the Data Metering option is enabled.

 

A A

Automatic Answer. This red LED flashes to indicate an incoming call and

 

 

lights continuously when the data module is operating in Automatic Answer

 

 

mode.

 

CD

Carrier Detect. This red LED lights as long as communication is established

 

 

with the far end device.

 

RD

Receive Data. This red LED lights when received data is being transferred

 

 

from the 7400B Data Module to the local terminal device.

 

SD

Send Data. This red LED lights when transmitted data is being transferred from

 

 

the local terminal device to the 7400B Data Module.

 

TR

Terminal Ready. If the &d0 option is enabled, the red LED is on continuously;

 

 

if either the &d1 or &d2 option is enabled, this LED indicates the state of the

 

 

DTR lead (see description of &d command in Appendix A).

 

OH

Off Hook. This red LED lights continuously from the time a data

 

 

communications call is initiated until the call is terminated.

 

CHECK

This red LED lights when a call set up fails because of an incompatibility

 

SPEED

between the configuration of the local terminal device and the far end device.

 

 

The incompatibility will usually occur if a common operating speed cannot be

 

 

achieved between the two endpoints. Chapter 5, “Troubleshooting,” provides

 

 

information about this and other conditions that may cause this LED to light.

 

DATA

This green LED lights to indicate that a data call is in progress. This LED

 

 

flashes along with the POWER/TEST LED if the connection with the PBX is

 

 

lost.

 

 

 

 

TABLE 1-1 Front Panel LED Indicator Descriptions

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Lucent Technologies 7400B manual Connector Description, Front Panel LED Indicator Descriptions
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7400B specifications

The Lucent Technologies 7400B is a notable entry in the landscape of telecommunications and networking technology, showcasing an innovative blend of features and capabilities that cater to the evolving demands of modern communication systems. Released as part of the company's broader portfolio aimed at enhancing network efficiency and reliability, the 7400B addresses the needs of both voice and data transmission organized around high-performance protocols.

One of the main features of the Lucent Technologies 7400B is its advanced signal processing capabilities. The device is built to handle a significant amount of bandwidth, making it suitable for high-capacity environments where data traffic can fluctuate dynamically. With its ability to support various signaling protocols, the 7400B is adept at integrating with existing infrastructure while providing the flexibility required to adopt emerging technologies.

The 7400B employs state-of-the-art voice encoding and compression techniques that optimize the quality of voice communications. This technology ensures clarity and minimizes latency, which is crucial for enterprises relying heavily on voice-over-IP (VoIP) applications and unified communications. The system supports multiple codecs, enabling it to seamlessly manage both traditional telephony and next-generation voice services.

In terms of reliability, the Lucent 7400B features robust redundancy protocols, ensuring continuous service availability even in the face of potential hardware failures or unexpected disruptions. It also includes built-in diagnostic tools that facilitate rapid troubleshooting, allowing technicians to identify and resolve issues efficiently. This focus on reliability makes the 7400B a preferred choice for critical business applications where downtime can lead to significant productivity losses.

The integration of advanced networking technologies such as Quality of Service (QoS) further enhances the performance of the 7400B. This capability ensures that high-priority applications receive the necessary bandwidth, maintaining optimal performance levels regardless of overall network traffic loads.

Moreover, the Lucent Technologies 7400B is designed with scalability in mind. Organizations can start with a basic configuration and expand their capacity as needed, thus ensuring that their investment remains relevant as their communication demands grow. This scalability is complemented by a user-friendly management interface, allowing network administrators to configure and monitor the system with ease.

In summary, the Lucent Technologies 7400B stands out for its advanced signal processing, voice encoding capabilities, reliability features, and scalability. These characteristics make it a vital component for any organization looking to enhance their telecommunications infrastructure and meet the increasingly complex communication needs of today’s digital landscape.
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