310 lines
12 KiB
Plaintext
310 lines
12 KiB
Plaintext
==Phrack Magazine==
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Volume Five, Issue Forty-Six, File 25 of 28
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****************************************************************************
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================================
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AT&T Definity System 75/85
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Communications System
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Description & Configuration
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================================
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Written By: erudite
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(armitage@dhp.com)
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=====
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Intro
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=====
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Let me introduce you to the AT&T Definity System 75/85. This communications
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system is a product of the merging of the AT&T System 75 and System 85
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architectures. The name Definity came from the two words "definitive" and
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"infinity".
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Let me also tell you that there are many different communications systems
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out there. (Merlins, AT&Ts) Many many many, I couldn't name them all, but
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the AT&T systems are nice. I enjoy working with them, and I hope you enjoy
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this text file.
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This System is an advanced business communications system. A Digital
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Communications Protocol (DCP) allows data communication through data
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terminal equipment connected to the digital switch. This allows the
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system to handle data and voice communications simultaneously.
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The System can handle up to 1600 lines that supports all digital, hybrid,
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and analog terminals and equipment. Up to 400 trunks, and up to 400
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Automatic Call Distribution (ACD) Agents. The Data switching capacity is up
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to 800 digital data endpoints, and 160 integrated and combined pooled modem
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facilities.
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~ 510D Personal Terminal or 515-Type Business Communications Terminal
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~ 7404D Terminals
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~ 7406D or 7407D Equipped with optional Data Module Base
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~ Asynchronous Data Units (ADU) (DCE type device that has rs232c interface)
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~ Digital Terminal Data Modules
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~ 3270 Data Modules
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~ Internal Data Channels
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~ Trunk Data Modules (Modular)
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~ Processor Data Modules (Modular)
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==========
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Networking
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==========
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The Processor Port Network (PPN) always provides the switch processing
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element (SPE) and port circuits. An Expansion Port Network (EPN) is
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available to increase line size of any system by allowing you to add
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additional port circuits. The EPN connects to the PPN over a fiber
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optic cable that may be up to 1.86 miles remotely situated. It may also
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by located adjacent to the PPN.
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This System may be arranged stand-alone or you can integrate it into a
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private network. You can form these types of Networks:
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~ Tandem Tie Trunk Network (TTTN)
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~ Electronic Tandem Network (ETN)
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~ Main/Satellite Configuration
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~ Distributed Communications System (DCS)
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~ Centralized Attendant Service (CAS)
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An Integrated Services Digital Network Primary Rate Interface (ISDN-PRI)
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makes it possible for the Definity System to access various private and
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public network services. With ISDN-PRI the you can access these services:
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~ Call by Call Service Selection
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~ Private Network Services
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~ Information Forwarding
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~ Call Identification Display
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- Connected Number Display
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- Connected Party Name Display
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- Calling and Called Number Record Display
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- Calling and Called Party Name Display
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=============
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Configuration
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=============
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The Actual System is encased in a pair of "cabinets" which have a fiber
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optic link between them. It is also common to have a stack of about three
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"cabinets" of a smaller size, for different models.
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Shown here is a typical multi-carrier system with a Processor Port Network
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(PPN) cabinet and Expansion Port Network (EPN) cabinet.
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attendant outside trunks _____ outside private line
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consoles and lines / data transmission equipment or
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\ \ / analog switched network
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\ fiber optic | |
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| connection | | __ business communication
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-+---------/~\--------+--+ / terminals
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| AT&T | | AT&T | |
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| DEFINITY | | DEFINITY +------' ___data
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---+ SYSTEM | | SYSTEM +--------<>------[audix] / terminals
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/ | 75/85 | | 75/85 | modular data /
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| |___________| |__________+| processor ____ |
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manager | | | | +'optional host
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terminal | | +-------<>----------+ | computer or call
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/ +-------[]-----+, |____| management system
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/ asynchronous |
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single line data unit \__ data
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voice terminals terminals
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===================
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Voice and Data
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Management Features
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===================
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There are a lot of voice features and services, in fact, too many to list, I
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will do a run down on all the interesting and useful features and services.
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It has many Voice Management, Data Management, Network Services, System
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Management, Hospitality Services, and Call Management Services.
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call attendant can use to operate the console more efficiently
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both inside system users and remote callers to edit, receive, send,
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write, and forward voice messages.
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system.
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it to the display console.
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- Attendant Conference: Allows Attendant to construct a conference call
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- Terminal Conference: Allows remote user to construct a conference call
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without attendant assistance.
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being interrupted by any of the systems overriding features, and denies
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ability to gain access to, and or superimpose tones.
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is issued by the administrator to a certain extension # for indication of
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a dedicated private data extension.
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the system to dial anyone else, such as the attendant console.
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the following trunks and more.
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~ Voice Grade DS1 Tie Trunks
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~ Alternative Voice/Data (AVD) DS1 Tie Trunks
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~ Digital Multiplexed Interface (DMI) Tie Trunks
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~ Central Office (CO) Trunks
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~ ISDN-PRI Trunks
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~ Remote Access Trunks
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~ Wide Area Telecommunications Service (WATS) Trunks
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features and functions that is used for maintenance testing. Such as access
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to system tones, access to specific trunks, etc.
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Note: AT&T designed the Facility Test Calls Feature for testing
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purposes only, and system maintenance. When properly
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administered, AT&T claims that the customer is responsible for
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all security items, and secure system from unauthorized users,
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and that all users should be aware of handling access codes.
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AT&T claims they will take no responsibility for poor
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administration.
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it rings down if busy, or if it receives a dial timeout.
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packet switched local area network that will link with mainframes,
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workstations, personal computers, printers, terminals, storage devices,
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and communication devices.
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This interface allows connection of the system to an ISDN Network by means
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of ISDN frame format called PRI.
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branch has a Listed Directory Number (LDN).
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~ Common Control Switching Arrangement (CCSA)
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~ Electronic Tandem Network (ETN)
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~ Enhanced Private Switched Communications Service (EPSCS)
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~ Tandem Tie Trunk Network (TTTN)
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~ Software Defined Network (SDN)
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doesn't want to take responsibility for anything that is abused with this
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feature.
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would come in handy.
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others calls, again, AT&T does not want to take any legal fees on misuse
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on this feature.
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attendant's assistance.
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========
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Software
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========
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The System comes with switched services software, administrative software,
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and maintenance software. All running on a real-time operating system.
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and services. This also is responsible for relaying any information to the
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console display.
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tasks, and configurations.
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keep everything running properly.
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=====================
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System Administration
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=====================
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The "Access Code" you will encounter on these systems is a 1, 2, or 3 digit
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number. The pound (#) and star (*) keys can be used as the first digit of the
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code. Below you will see a typical Screen Format taken from one of my logs,
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information aside you can see and get a feel of what the administration side of
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the system is like. Page 1 of 4
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STATION
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Extension: ____
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Type: _____ Lock Messages: _ COR: _ Room: _____
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Port: ___________ Security Code: ____ COS: _ Jack: _____
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Name: ___________ Coverage Path: ___ Cable: _____
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FEATURE OPTIONS
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LWC Reception? _____ Headset? _ Coverage Msg Retrieval? _
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LWC Activation? _ Auto Answer? _ Data Restriction? _
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Redirect Notification? _ Idle Appearance Preferences? _
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PCOL/TEG Call Alerting? _
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Data Module? _ Restrict Last Appearance? _
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Display? _
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ABBREVIATED DIALINGS
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List1: _____ List2: _____ List3: _____
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BUTTON ASSIGNMENTS
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1: _______ 6: _______
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2: _______ 7: _______
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3: _______ 8: _______
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4: _______ 9: _______
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5: _______
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==================
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System Maintenance
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==================
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Finally the Maintenance section, where you can see where the errors are
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logged, where all the alarms are sent, printed, etc.
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There are 3 different types of alarms:
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console or INADS)
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The Error log is reported and can be viewed at The Manager Terminal,
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as well as the alarm log.
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==============
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Basic Acronyms
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==============
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ADU Asynchronous Data Unit
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AUDIX Audio Information Exchange
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COR Class of Restriction
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COS Class of Service
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DCP Digital Communications Protocol
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DMI Digital Multiplexed Interface
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EPN Expansion Port Network
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ISDN Integrated Service Digital Network
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PPN Processor Post Network
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PSDN Packet Switching Data Network
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=====
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Tones
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=====
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Here is most of the Tones, mostly either interesting ones or often used
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tones the System. Here are the tones, the frequencies, and the moderations.
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Tone Frequency Pattern
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---- --------- -------
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Answer Back 3 2225 Hz 3000 on
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Answer Back 5 2225 Hz 5000 on
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Bridging Warning 440 Hz 1750 on, 12000 off,
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650 on; repeated
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Busy 480 Hz + 620 Hz 500 on, 500 off; repeated
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Call Waiting
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Internal 440 Hz 200 on
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External 440 Hz 200 on, 200 off
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Attendant 440 Hz 200 on, 200 off
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Priority Call 440 Hz 200 on, 200 off, 200 on,
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200 off, 200 on
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Call Waiting
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Ring Back 440 Hz + 480 Hz; 900 on (440 + 480)
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440 Hz 200 on (440) 2900 off; repeated
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Cnrt Att Call
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Incoming Call
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Identification 480 Hz & 440 Hz 100 on (480), 100 on (440),
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& 480 Hz 100 on silence;
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Dial Zero,
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Attendant Transfer,
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Test Calls, 440 Hz 100 on, 100 off, 100 on
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Coverage 440 Hz 600 on
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Confirmation 350 Hz + 400 Hz 100 on, 100 off, 100 on,
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100 off, 100 on
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Dial 250 Hz + 400 Hz Continuous
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Executive Override 440 Hz 300 on followed by
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Intercept 440 Hz & 620 Hz 250 on (440),
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250 on (620); repeated
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Ringback 440 Hz + 480 Hz 1000 on, 3000 off; repeated
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Zip 480 500 on
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=====
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Outro
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=====
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System 75/85 (multi-carrier cabinet model) communications system.
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I hope you learned something, anywayz, questions comments, system login
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information, defaults, where to get manuals, or anything else:
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email me (armitage@dhp.com) and I will get back to you.
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erudite (armitage@dhp.com) (armitage on irc)
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