The Hacker's Encyclopedia 1998

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==Phrack Magazine== Volume Five, Issue Forty-Six, File 25 of 28 **************************************************************************** ================================ AT&T Definity System 75/85 Communications System Description & Configuration ================================ Written By: erudite (armitage@dhp.com) ===== Intro ===== Let me introduce you to the AT&T Definity System 75/85. This communications system is a product of the merging of the AT&T System 75 and System 85 architectures. The name Definity came from the two words "definitive" and "infinity". Let me also tell you that there are many different communications systems out there. (Merlins, AT&Ts) Many many many, I couldn't name them all, but the AT&T systems are nice. I enjoy working with them, and I hope you enjoy this text file. This System is an advanced business communications system. A Digital Communications Protocol (DCP) allows data communication through data terminal equipment connected to the digital switch. This allows the system to handle data and voice communications simultaneously. The System can handle up to 1600 lines that supports all digital, hybrid, and analog terminals and equipment. Up to 400 trunks, and up to 400 Automatic Call Distribution (ACD) Agents. The Data switching capacity is up to 800 digital data endpoints, and 160 integrated and combined pooled modem facilities. ~ 510D Personal Terminal or 515-Type Business Communications Terminal ~ 7404D Terminals ~ 7406D or 7407D Equipped with optional Data Module Base ~ Asynchronous Data Units (ADU) (DCE type device that has rs232c interface) ~ Digital Terminal Data Modules ~ 3270 Data Modules ~ Internal Data Channels ~ Trunk Data Modules (Modular) ~ Processor Data Modules (Modular) ========== Networking ========== The Processor Port Network (PPN) always provides the switch processing element (SPE) and port circuits. An Expansion Port Network (EPN) is available to increase line size of any system by allowing you to add additional port circuits. The EPN connects to the PPN over a fiber optic cable that may be up to 1.86 miles remotely situated. It may also by located adjacent to the PPN. This System may be arranged stand-alone or you can integrate it into a private network. You can form these types of Networks: ~ Tandem Tie Trunk Network (TTTN) ~ Electronic Tandem Network (ETN) ~ Main/Satellite Configuration ~ Distributed Communications System (DCS) ~ Centralized Attendant Service (CAS) An Integrated Services Digital Network Primary Rate Interface (ISDN-PRI) makes it possible for the Definity System to access various private and public network services. With ISDN-PRI the you can access these services: ~ Call by Call Service Selection ~ Private Network Services ~ Information Forwarding ~ Call Identification Display - Connected Number Display - Connected Party Name Display - Calling and Called Number Record Display - Calling and Called Party Name Display ============= Configuration ============= The Actual System is encased in a pair of "cabinets" which have a fiber optic link between them. It is also common to have a stack of about three "cabinets" of a smaller size, for different models. Shown here is a typical multi-carrier system with a Processor Port Network (PPN) cabinet and Expansion Port Network (EPN) cabinet. attendant outside trunks _____ outside private line consoles and lines / data transmission equipment or \ \ / analog switched network \ fiber optic | | | connection | | __ business communication -+---------/~\--------+--+ / terminals | AT&T | | AT&T | | | DEFINITY | | DEFINITY +------' ___data ---+ SYSTEM | | SYSTEM +--------<>------[audix] / terminals / | 75/85 | | 75/85 | modular data / | |___________| |__________+| processor ____ | manager | | | | +'optional host terminal | | +-------<>----------+ | computer or call / +-------[]-----+, |____| management system / asynchronous | single line data unit \__ data voice terminals terminals =================== Voice and Data Management Features =================== There are a lot of voice features and services, in fact, too many to list, I will do a run down on all the interesting and useful features and services. It has many Voice Management, Data Management, Network Services, System Management, Hospitality Services, and Call Management Services. call attendant can use to operate the console more efficiently both inside system users and remote callers to edit, receive, send, write, and forward voice messages. system. it to the display console. - Attendant Conference: Allows Attendant to construct a conference call - Terminal Conference: Allows remote user to construct a conference call without attendant assistance. being interrupted by any of the systems overriding features, and denies ability to gain access to, and or superimpose tones. is issued by the administrator to a certain extension # for indication of a dedicated private data extension. the system to dial anyone else, such as the attendant console. the following trunks and more. ~ Voice Grade DS1 Tie Trunks ~ Alternative Voice/Data (AVD) DS1 Tie Trunks ~ Digital Multiplexed Interface (DMI) Tie Trunks ~ Central Office (CO) Trunks ~ ISDN-PRI Trunks ~ Remote Access Trunks ~ Wide Area Telecommunications Service (WATS) Trunks features and functions that is used for maintenance testing. Such as access to system tones, access to specific trunks, etc. Note: AT&T designed the Facility Test Calls Feature for testing purposes only, and system maintenance. When properly administered, AT&T claims that the customer is responsible for all security items, and secure system from unauthorized users, and that all users should be aware of handling access codes. AT&T claims they will take no responsibility for poor administration. it rings down if busy, or if it receives a dial timeout. packet switched local area network that will link with mainframes, workstations, personal computers, printers, terminals, storage devices, and communication devices. This interface allows connection of the system to an ISDN Network by means of ISDN frame format called PRI. branch has a Listed Directory Number (LDN). ~ Common Control Switching Arrangement (CCSA) ~ Electronic Tandem Network (ETN) ~ Enhanced Private Switched Communications Service (EPSCS) ~ Tandem Tie Trunk Network (TTTN) ~ Software Defined Network (SDN) doesn't want to take responsibility for anything that is abused with this feature. would come in handy. others calls, again, AT&T does not want to take any legal fees on misuse on this feature. attendant's assistance. ======== Software ======== The System comes with switched services software, administrative software, and maintenance software. All running on a real-time operating system. and services. This also is responsible for relaying any information to the console display. tasks, and configurations. keep everything running properly. ===================== System Administration ===================== The "Access Code" you will encounter on these systems is a 1, 2, or 3 digit number. The pound (#) and star (*) keys can be used as the first digit of the code. Below you will see a typical Screen Format taken from one of my logs, information aside you can see and get a feel of what the administration side of the system is like. Page 1 of 4 STATION Extension: ____ Type: _____ Lock Messages: _ COR: _ Room: _____ Port: ___________ Security Code: ____ COS: _ Jack: _____ Name: ___________ Coverage Path: ___ Cable: _____ FEATURE OPTIONS LWC Reception? _____ Headset? _ Coverage Msg Retrieval? _ LWC Activation? _ Auto Answer? _ Data Restriction? _ Redirect Notification? _ Idle Appearance Preferences? _ PCOL/TEG Call Alerting? _ Data Module? _ Restrict Last Appearance? _ Display? _ ABBREVIATED DIALINGS List1: _____ List2: _____ List3: _____ BUTTON ASSIGNMENTS 1: _______ 6: _______ 2: _______ 7: _______ 3: _______ 8: _______ 4: _______ 9: _______ 5: _______ ================== System Maintenance ================== Finally the Maintenance section, where you can see where the errors are logged, where all the alarms are sent, printed, etc. There are 3 different types of alarms: console or INADS) The Error log is reported and can be viewed at The Manager Terminal, as well as the alarm log. ============== Basic Acronyms ============== ADU Asynchronous Data Unit AUDIX Audio Information Exchange COR Class of Restriction COS Class of Service DCP Digital Communications Protocol DMI Digital Multiplexed Interface EPN Expansion Port Network ISDN Integrated Service Digital Network PPN Processor Post Network PSDN Packet Switching Data Network ===== Tones ===== Here is most of the Tones, mostly either interesting ones or often used tones the System. Here are the tones, the frequencies, and the moderations. Tone Frequency Pattern ---- --------- ------- Answer Back 3 2225 Hz 3000 on Answer Back 5 2225 Hz 5000 on Bridging Warning 440 Hz 1750 on, 12000 off, 650 on; repeated Busy 480 Hz + 620 Hz 500 on, 500 off; repeated Call Waiting Internal 440 Hz 200 on External 440 Hz 200 on, 200 off Attendant 440 Hz 200 on, 200 off Priority Call 440 Hz 200 on, 200 off, 200 on, 200 off, 200 on Call Waiting Ring Back 440 Hz + 480 Hz; 900 on (440 + 480) 440 Hz 200 on (440) 2900 off; repeated Cnrt Att Call Incoming Call Identification 480 Hz & 440 Hz 100 on (480), 100 on (440), & 480 Hz 100 on silence; Dial Zero, Attendant Transfer, Test Calls, 440 Hz 100 on, 100 off, 100 on Coverage 440 Hz 600 on Confirmation 350 Hz + 400 Hz 100 on, 100 off, 100 on, 100 off, 100 on Dial 250 Hz + 400 Hz Continuous Executive Override 440 Hz 300 on followed by Intercept 440 Hz & 620 Hz 250 on (440), 250 on (620); repeated Ringback 440 Hz + 480 Hz 1000 on, 3000 off; repeated Zip 480 500 on ===== Outro ===== System 75/85 (multi-carrier cabinet model) communications system. I hope you learned something, anywayz, questions comments, system login information, defaults, where to get manuals, or anything else: email me (armitage@dhp.com) and I will get back to you. -----BEGIN PGP PUBLIC KEY BLOCK----- Version: 2.3a mQCNAi4sHnsAAAEEALjw8E+bOEr1BlCyrBp8f3Ko8yOX5P5uiP+Vor5SamJ33gbu PBSBOc+Xww+93Pjl/R7gMC/c/FFtn+ehHsCm5u3AaIXSmx2ZVW2Xen9vXBRMZRB+ rpC2GdCiFCAdfaHwANHaeuHDmKiP4GqaQuG1M1Xzv9NqW4m70tndGYkB59slAAUT tAdFcnVkaXRl =Nx+g -----END PGP PUBLIC KEY BLOCK----- erudite (armitage@dhp.com) (armitage on irc)