AT&T 555-021-729Issue 1November 1991DEFINITY® Communications SystemISDN Asynchronous Data ModuleFeature Package 3User Manual
Local ModeIn local mode, commands typed at the data terminal keyboard are read, interpreted, and actedupon by the ADM to make and end data calls as we
uncorrected (UI-frame) mode connections over 56 Kbps facilities.The data mode option setting must correspond to the capabilities administered on your
If you are viewing the options, press # to continue stepping through the display of all theoptions. Press * to quit once you have viewed the options.
Press 4 for odd.You hear a rising two-tone confirmation.6 Select your desired Local Mode setting.Press 1 for CMD. (default setting)Press 2 for off.Pr
Making a Data CallYou can use the keypad of your ISDN set to initiate a data call, or you can initiate it from yourdata terminal or PC. If you initia
2 At the CMD: prompt, type dial and the telephone number.For example, type dial 5551212.Note: When dialing, type: dial; then one (and only one) space
Making a Data Call From a Terminal or PC Using AT LocalMode CommandsThe Local Mode data option must be set for AT Local Mode. See the earlier section
Using the CMD and AT CommandsWhen to Type CommandsYou can only type commands using the data terminal keyboard to dial calls, program, andmaintain your
Using CMD Local Mode CommandsThis section provides a list of the CMD commands, has information on getting on-screen helpwith commands, and procedures
Help for CMD CommandsYou can ask for help any time that you have a CMD: prompt on the screen. When you typehelp, the system displays the following s
NOTICEWhile reasonable efforts were made to ensure that the information in this document was complete andaccurate at the time of printing, AT&T ca
CMD: help endThe ADM responds:Type END to end a data call in progress.Abbreviating CMD CommandsYou can abbreviate command names. You need only type t
Changing from CMD Local Mode to AT Local ModeTo change from CMD local mode to AT local mode, at the CMD: prompt, type &&h and pressRETURN . T
Programming Telephone Numbers for Memory DialingYou can program up to nine telephone numbers for memory dialing of data calls and assign themcustomize
Memory DialingThe ADM dials the number and loads any data profile that was stored with the telephone number.For example, use the following command to
Using AT Local Mode CommandsThe AT Local Mode provides an interface similar to that available on many popular modems. Inparticular, the AT mode is ap
Changing from AT Local Mode to CMD Local ModeTo exit AT mode and return to the CMD local mode, type:at&&torat&&aIf there is no data ca
Table 3-2: AT Commands and ApplicationsCommand Applicationata To answer an incoming callatd <string> or To dial a data callatdt<string>at
S-RegistersThe S-registers provide a means of changing or reading selected ADM options. In most cases,the values defined for the S-registers listed i
Dialing a Voice CallTo dial a voice call from your PC or terminal keyboard type:atdp 5551212 and press RETURN where 5551212 is the telephone number yo
Data Options and ProfilesThe ADM stores data options (configuration information) to tell it how to communicate with thefar end. The options, listed i
Contents1Chapter 1Introduction 1-1Data Features 1-2The System Administrator: An Important Note toAll Users1-3 On the ISDN Network: An Important Note
Table 4-1: Data Option ValuesOption Possible ValuesAnswer auto, manualAttention off, 3 of the same ASCII character (+++)Autoadjust on, offBreak off,
Data Option DefinitionsThe following descriptions assume single-stream operation which is the case when API is notbeing used. Refer to the ISDN Appli
AutoadjustOption Values: on, offApplicable Data Protocols: AllIf Autoadjust is on, the ADM automatically adjusts to the speed and parity of your att
DCD (Data Carrier Detect)Option Values: follow, ignoreApplicable Data Protocols: AllThis option determines whether the ADM turns on the Data Carrier
If you select on, the ADM echos characters sent by your data terminal during Data Mode.Select on if your host computer or other data endpoint does not
ForwardingOption Values: off, cr (carriage return), ctrl (all control characters and DEL), alpha (allalphanumerics), all (all characters)Applicable D
Like Char.erase, Line.erase is enabled only when Edit is enabled. Select the character that bestmeets your needs. If you do not have a CANCEL key on
Local.lfOption Values: Any ASCII character except NUL, SOH, Ctrl - X , Ctrl - U , Ctrl - S, or BS (default = LF)Applicable Data Protocols: N/AThis o
approximately 10 milliseconds, then packets are transmitted to the network without artificialdelay. This is the case for a person typing.If character
Note: Mode 2 and Mode 3 are defined in the AT&T Digital MultiplexedInterface (DMI) Technical Specification. For a copy of this manual,Document 55
6Chapter 6Technical Information 6-1EIA-232-D Lead Operation 6-1Packet Assembler Disassembler (PAD)Capabilities6-4 Messages on the Voice Terminal or th
asynchronous data character end-to-end as information, rather than checking orgenerating a parity bit. V.120 data calls are accepted by your ADM from
SpeedOption Values: 1200, 2400, 4800, 9600, 19.2, 38.4, 57.6 KbpsApplicable Data Protocols: AllUse this option to change the speed at which data com
This option determines which method is used to control the flow of data from your data terminalto the ADM.When you select xon/xoff, the ADM sends your
Data Option ProfilesThis section describes the available data options profiles and how to create and use your ownprofiles.Types of Data Option Profile
The system responds:pA updatedTo replace one stored profile with another, copy the replacement profile to the replaced profile;for example, type:copy
1 At the CMD: prompt, type program p1 and press RETURN .The ADM displays the current option values for p1 and prompt:Type option name (or Q to quit):
For example:setechosettextNote: Values in pA are not automatically stored. Unless you only want to temporarily changeoptions, it is important to save
Replacing One Stored Profile With AnotherTo replace one stored profile with another, type copy replacement profile to replaced profile.For example, ty
Typical Data Option Settings for Data TransferThis section describes the options you may need to modify for three common types of datatransfer.Charact
greater than 19.2 Kbps. For these data modes, you may or may not be able to successfullytransfer files at speeds as high as 38.4 or 57.6 Kbps.Workshe
IntroductionCongratulations on the addition of an Asynchronous Data Module (ADM II) to your AT&TIntegrated Services Digital Network (ISDN) set. F
TestingYou can perform three tests on your ADM: local loopback test, remote loopback test, and self-test. Taken together, these three tests help you
Remote Loopback TestThis test requires compatible AT&T equipment at the remote end.The remote loopback test ensures that no problems with data tra
Self-TestThe self-test can be used to reset the data options in theActive profile. Unlike the Data ZAP command (see "Use of theData ZAP Command t
Technical InformationEIA-232-D Lead OperationThe following description assumes single-stream operation which is the case when API is notbeing used. R
In the data mode, data transmitted to the data terminal consists of one start bit, eight informationbits, and one stop bit. The parity of data receiv
Pin 20 — Data Terminal Ready (CD)This circuit allows the attached terminal to control the ADM’s connection to the network. Whenthe DTR option is set
Packet Assembler Disassembler (PAD) CapabilitiesThe ADM options provide capabilities outlined in the CCITT X.3, X.28, and X.29 specifications.The loca
Table 6-1: X.3 ParametersParameter Parameter Selectable Parameter Class*Reference Description Values MeaningNumber R/W RO NI1 Pad Recall 0 Pad Recall
Data FeaturesAsynchronous full-duplex operation at data rates from 1200 bits per second (bps) to 57.6kilobits per second (Kbps) through an EIA-232-D i
Parameter Parameter Selectable Parameter Class*Reference Description Values MeaningNumber R/W RO NI11 Binary speed of 3 1200 bit/sstart-stop DTE 12 2
Messages on the Voice Terminal or the Attached DataTerminal DisplaysThis section describes various messages that may appear on your 7506 or 7507 displ
TroubleshootingUse of the Data ZAP Command to Clear a Locked-upADMFollowing is a list of circumstances which can result in a lock-up condition between
Use of the Self-Test to Clear a Locked-up ADMSelf-test can also be used to reset the data options in the Active profile. Unlike the Data ZAP,which re
Appendix A — Cause Code TablesThe Text option allows you to select numeric (diagnostic) or verbal formats for the ADM’spresentation of network generat
Table A-1: X.25 Cause MessagesPacket Type StimulusClear Reset Restart 40 Character LCD & EIA Port 24 Character LCDDecimal Decimal Decimal Verbal
Table A-2 Q.931 Signal MessagesDecimalValue LCD and EIA Port Text0 DIAL TONE ON1 RINGING2 INTERCEPT TONE ON3 REORDER TONE ON4 BUSY TONE ON5 CONFIRM TO
Table A-3: Q.931 Cause MessagesDecimalValue EIA Port Text LCD Text1 Unassigned number 12 No route to specified network 26 Channel unacceptable 616 No
GLOSSARYANSI display protocol. A standard set of escape sequences, established by ANSI (the AmericanNational Standards Institute), used by many displ
The System Administrator: An Important Note to AllUsersThroughout this manual, we ask you to speak to your "system administrator." In your
attempts to adjust to match the speed of the remote device. Also called communicationsparameters. See also asynchronous data communications and data
IndexAAbbreviating CMD commands, 3-4Activating a stored profile, 4-18Active profilepA, 4-15, 4-19storing, 4-18ADM OptionsCCITT, 6-4Answerdata option,
DData calls, 2-1Data carrier detectdata option, 4-5Data features, 1-2Data mode, 2-1Data Mode, 2-2Data mode, 2-2DX.25, 3-5Data operations, 2-1Data opti
Local ModeAT, 2-3CMD, 2-3Enhanced AT, 2-3Local modelocal-data, 2-2local-idle, 2-2Local ModeOff, 2-3Local.crdata option, 4-8Local-data, 2-2Local.echoda
Signal ground (AB), 6-2Signal messages, A-3Simultaneous voice and data communications, 1-1Single-stream, 4-3, 6-1Speed, 2-3data option, 4-13S-Register
Organization of the User´s ManualThis manual is arranged into the following chapters.Chapter 1: IntroductionChapter 2: Getting Started — Explains how
Getting StartedThis chapter explains how to prepare your Asynchronous Data Module (ADM) for dataoperations and how to make data calls.Communicating Wi
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