Lucent Technologies 7400B manual Appendix a AT Command SET, LabelDescription

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DEFINITY Communications System

APPENDIX A: AT COMMAND SET

7400B Data Module

 

User’s Guide

Page A-1

 

 

APPENDIX A: AT COMMAND SET

This appendix contains an explanation of each AT command accepted by the 7400B Data Module. Labels used in the descriptions are defined as follows:

LabelDescription

Command:The command is shown as it should be typed. The command may be typed in uppercase or lowercase. Spaces may be typed between multiple commands on the same command line for readability, but the spaces are ignored by the 7400B Data Module.

Function:A brief, functional description of the command is provided here.

Type:Type may be immediate or configuration. An immediate command causes the data module to perform an action as soon as the command is sent (for example, go off-hook or dial a number). A configuration command modifies a configuration parameter during the current session.

Arguments:Many commands accept or require a numerical argument. Whether an argument is required and the range of acceptable values for the argument is shown here.

S-Register:The S-registers consist of 28 1-byte memory locations in the data module, designated as S0 through S27. The S-registers hold values for defining the current configuration of the data module. Some commands modify a specific S-register, and some commands perform an action based on the current value stored in an S-register. Whether an S-register is modified or read by the current command is explained here.

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Contents AT&T 7400B Data Module To Order Copies of this Manual Contents Preface about this Guide 1C-1C-2C-5C-8 Typographical ConventionsOrganization of this GuideTroubleshooting. Describes procedures for Appendix C Application Notes. Contains notes on how toAppendix D Quick-Reference Summaries. Contains quick RelatedIntroduction External Features Front PanelConnector Description Front Panel LED Indicator DescriptionsRear Panel Connector Descriptions Rear PanelPower Supply Unit Hardware SoftwareRequirements Typical Standalone Installation Typical Installation with Telephone Installation Installation Selecting DIP-Switch Options With/Without Telephone Option SW1-1Installation Data Metering Option SW1-5Make Busy on Local Loop Option SW1-8 Factory-default Option DIP Switch SettingsTelephone SW1-1 Data Metering SW1-5Accessing the Hardware Option Switches Connecting the EIA-232-D Cable Connecting the Power SupplyPower-Up Self-Test If YOU are Using a PCIf YOU are Using a Dedicated TerminalLine or data mode Operating ModesCharacter Formats Data Bits Parity Stop BitsEssential AT Commands AT Command Description AT Command SubsetMore AT Command Subset Contd ConnectBusy Sample ON-LINE Session Starting the SessionNo Carrier Selection +++Operation and Configuration Configuration ParametersCommand Line Action Issuing Commands Command Line PrefixCommand Buffer Command Line Set UpAts3= ddd Enter Command AcknowledgementVerbose Form Numeric Description Result CodesFrom Data Mode to Command Mode and Back Dialing a Number Multiple CharactersFollowing is an example Commands for Using Stored Telephone Numbers At&z m=nnn...n EnterReset Configuration RecallRemote Site USE At&f Enter HOW to USE this ChapterSymptom Problem Solution PBXCheck Speed LED At&d2 Enter Terminate the local loopback test by typing Atq0 o Enter Atx4 Enter Appendix a AT Command SET LabelDescriptionContd Escape sequence Immediate None CommandA Arguments noneArguments none Registernone Examplea CommandD Command Function Switch hook control Command Function Type Arguments Register Example Comments Ato EnterAtv Enter A-10 User’s Guide Reset and recall a stored profile Data Carrier Detect DCD options Data Terminal Ready DTR options Command&F Arguments none Registernone ExampleAt&t3 Enter see comment At&v Enter Command&Y Registernone ExampleAt&z2=555-1212 Enter 055 Description Range Values Comments See Also Register Description StorableStorable Comments From a data terminal Register S6 not used Register S8 not used S9 not used Register S11 not used Register S13 not usedRegister Description Range Values Storable Comments See Also Register S15 not usedRegister S17 not used Values Storable Register S19 not used S20 not usedRegisterS21 Range of Values Storable Comments See AlsoBits 0 and 1 not used default = 2, see comment Register S24 not used Register S27 not used PBX Application Notes PC Applications Guide AT&T 7400B Data Module PC Application Guide, ordering numberConfiguring the Software Procomm PlusSelect Modem Options Select Result MessagesSelect Save Setup Options Placing a CallDisconnecting Call C-4Relay Gold Placing a Call DirectlySelect Call a Host Directory AttmailDisconnecting a Call Press Esc to return to the Online menu as shown belowCrosstalk Select the letter next to Hayes Smartmodem all modelsSelect the baud rate that you will use most often Bye Enter Appendix D QUICK-REFERENCE Summaries Command Description Table D-1 AT Command SETSr=n Table D-1 AT Command SET Contd Register Description Range/Unit Table D-2 S-REGISTER SummaryConnected Table D-3 Result CodesParameter Value AT Command Table D-4 FACTORY-DEFAULT ConfigurationR e Table D-4 FACTORY-DEFAULT Configuration Contd Parameter Value RegisterPin Circuit Direction Function Table D-5 EIA-232-D PIN AssignmentsAscii Control KEY Value Character Table D-6 Ascii Character SETTable D-6 Ascii Character SET Contd Glossary Glossary Script files. See command files Index DTE, see Data Terminal Device DTR lead Data MeteringRear panel, 1-4Remote site use AT&T Important Safety Instructions Page Important Installation Safety Instructions

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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