Lucent Technologies 7400B manual Remote Site USE, Reset, Configuration Recall

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DEFINITY Communications System

CHAPTER 4: OPERATION AND CONFIGURATION

7400B Data Module

 

User’s Guide

Page 4-9

 

 

 

 

If nnn is 0 (the factory-default setting), the automatic answer feature is

 

 

turned off. The red LED on the front of the data module labeled “AA”

 

 

lights when the automatic feature is turned on.

REMOTE SITE USE

 

The 7400B Data Module can be used at a remote site as a dedicated

 

 

service device to answer incoming data calls, send data to a remote end

 

 

device, and then hang up. For example, you may wish to provide access

 

 

to a printer from a remote site.

 

 

The following is a typical command line you might use for setting up

 

 

this operation (spaces are used here for readability, but are not required):

 

 

 

at &c1 &d2 q1 s0=1 &w0 &y0 [ Enter ]

 

 

Following the at prefix, the commands in the example produce the

 

 

following

results:

 

 

●

&C1

sets the Data Carrier Detect (DCD) circuit of the data module

 

 

 

to operate according to the EIA standard.

 

 

●

&D2

sets the data module to go on hook when an on-to-off transition

 

 

 

 

 

 

is detected on the Data Terminal Ready (DTR) input, disconnecting

 

 

 

the call

 

 

●

Q1 turns off the result codes that would be the normal responses of

 

 

 

the data module to commands that it receives.

 

 

●

S0=1

turns on the automatic answer feature and causes the data

 

 

 

module to answer an incoming data call on the first ring.

 

 

●

&W0

causes the current configuration to be stored in data profile

 

 

 

storage location 0.

 

 

●

&Y0

selects the configuration stored in data profile storage location

 

 

 

0 to become the current configuration each time the data module is

 

 

 

powered on

 

 

Refer to Appendix A, “AT Command Set,” for a complete description

 

 

of each command used in this section.

 

 

 

RESET AND

Two commands are available for recovering from various data

CONFIGURATION RECALL

communications problems. You can reset the 7400B Data Module and

recall one of two stored data profiles as the current configuration. The form for this command is as follows:

atzn [ Enter ]

where n is the number 0 or 1, representing the data profile to be recalled.

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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 Guide TypographicalConventions Organization of thisRelated Troubleshooting. Describes procedures forAppendix C Application Notes. Contains notes on how to Appendix D Quick-Reference Summaries. Contains quickIntroduction Front Panel External FeaturesFront Panel LED Indicator Descriptions Connector DescriptionRear Panel Rear Panel Connector DescriptionsPower Supply Unit Hardware SoftwareRequirements Typical Standalone Installation Typical Installation with Telephone Installation Installation With/Without Telephone Option SW1-1 Selecting DIP-Switch OptionsInstallation Data Metering Option SW1-5Make Busy on Local Loop Option SW1-8 Data Metering SW1-5 Factory-defaultOption DIP Switch Settings Telephone SW1-1Accessing the Hardware Option Switches Connecting the EIA-232-D Cable Supply Connecting the PowerDedicated Terminal Power-Up Self-TestIf YOU are Using a PC If YOU are Using aData Bits Parity Stop Bits Line or data modeOperating Modes Character FormatsEssential AT Commands AT Command Description AT Command SubsetMore Connect AT Command Subset ContdBusy Starting the Session Sample ON-LINE SessionSelection +++ No CarrierConfiguration Parameters Operation and ConfigurationCommand Line Action Command Line Set Up Issuing CommandsCommand Line Prefix Command BufferAts3= ddd Enter Result Codes CommandAcknowledgement Verbose Form Numeric DescriptionMultiple Characters From Data Mode to Command Mode and Back Dialing a NumberFollowing is an example At&z m=nnn...n Enter Commands for Using Stored Telephone NumbersReset Configuration RecallRemote Site USE At&f Enter Chapter HOW to USE thisPBX Symptom Problem SolutionCheck Speed LED At&d2 Enter Terminate the local loopback test by typing Atq0 o Enter Atx4 Enter LabelDescription Appendix a AT Command SETContd Escape sequence Immediate None CommandA Arguments noneArguments none Registernone Examplea CommandD Command Function Switch hook control Ato Enter Command Function Type Arguments Register Example CommentsAtv Enter A-10 User’s Guide Reset and recall a stored profile Data Carrier Detect DCD options Data Terminal Ready DTR options Arguments none Registernone Example Command&FAt&t3 Enter see comment At&v Enter Registernone Example Command&YAt&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 S13 not used Register S11 not usedRegister S15 not used Register Description Range Values Storable Comments See AlsoRegister S17 not used Register S19 not used S20 not used Values StorableRange of Values Storable Comments See Also RegisterS21Bits 0 and 1 not used default = 2, see comment Register S24 not used Register S27 not used AT&T 7400B Data Module PC Application Guide, ordering number PBX Application Notes PC Applications GuideSelect Result Messages Configuring the SoftwareProcomm Plus Select Modem OptionsPlacing a Call Select Save Setup OptionsC-4 Disconnecting CallRelay Gold Placing a Call DirectlySelect Call a Host Attmail DirectoryPress Esc to return to the Online menu as shown below Disconnecting a CallSelect the letter next to Hayes Smartmodem all models CrosstalkSelect 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 Table D-2 S-REGISTER Summary Register Description Range/UnitTable D-3 Result Codes ConnectedParameter Value AT Command Table D-4 FACTORY-DEFAULT ConfigurationR e Parameter Value Register Table D-4 FACTORY-DEFAULT Configuration ContdTable D-5 EIA-232-D PIN Assignments Pin Circuit Direction FunctionTable D-6 Ascii Character SET Ascii Control KEY Value CharacterTable D-6 Ascii Character SET Contd Glossary Glossary Script files. See command files Index Data Metering DTE, see Data Terminal Device DTR leadRear 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.

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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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