GLOSSARY

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DEFINITY Communications System

7400B Data Module

User’s Guide

Data metering. A selectable feature of the 7400B Data Module that allows the device and its associated terminal to operate at a higher speed than the remote system to which it is connected.

Data mode. See on-line mode.

Data options. For asynchronous data communications, these parameters include data transfer speed (expressed in bits/second or bps, and sometimes called baud rate), parity, data word size (or data bits), and stop bits. Generally, these parameters must be set to match at both ends of the communication line. Except when the data metering option is enabled, the 7400B data module attempts to adjust to match the speed of the remote device. Also called communications parameters. See also asynchronous data communications and data metering.

Data Terminal Equipment. (DTE) A device that sends and/or receives data over a communication line via a DCE. Examples of DTE devices are a display terminal, a PC running appropriate data communications software, or a printer or plotter.

DCE. See Data Communications Equipment.

DCP. See Digital Communications Protocol.

Dial modifier. Any character that may be inserted in a command line following the D (dial) command. See D command in Appendix A, "AT Command Set," for a description of valid dial modifiers.

Digital Communications Protocol (DCP). A proprietary digital protocol used by AT&T PBX equipment to communicate with AT&T voice terminals and data modules. DCP supports simultaneous voice and data services over the same line.

DTE. See Data Terminal Equipment.

D8W. A standard modular telephone cord used to connect DCP devices to a PBX wall jack.

EIA-232-D.A US industry standard interface for digital data communications equipment, established by EIA (the Electronics Institute of America). The standard defines the cabling, connectors, and lead signal assignments used in the interface. Formerly referred to as the EIA Recommended Standard RS-232-C.

Hayes compatible. Of a DCE device, using the AT command set and performing in close compliance with the configuration and operating standards established by Hayes Microcomputer Products, Inc. See also AT command set.

Idle mode. An operational mode in which the 7400B Data Module is onhook waiting either for an incoming call or to originate a call.

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Lucent Technologies 7400B manual Glossary
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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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