Public Telephone Network Vulnerabilities
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GLOSSARY of Telecommunications Terms List of Abbreviations for Telecommunications Terms
GLOSSARY of Telecommunications Terms List of Abbreviations for Telecommunications Terms AAL – ATM Adaptation Layer ADPCM – Adaptive Differential Pulse Code Modulation ADSL – Asymmetric Digital Subscriber Line AIN – Advanced Intelligent Network ALI – Automatic Location Information AMA - Automatic Message Accounting ANI – Automatic Number Identification ANSI –American National Standards Institute API – Applications Programming Interface ATM – Asychronous Transfer Mode BHCA – Busy Hour Call Attempts BHCC – Busy Hour Call Completions B-ISDN – Broadband Integrated Services Digital Network B-ISUP – Broadband ISDN User’s Part BLV – Busy Line Verification BNS – Billed Number Screening BRI – Basic Rate Interface CAC – Carrier Access Code CCS – Centi Call Seconds CCV – Calling Card Validation CDR – Call Detail Record CIC – Circuit Identification Code CLASS – Custom Local Area Signaling CLEC – Competitive Local Exchange Carrier CO – Central Office CPE – Customer Provided/Premise Equipment CPN – Called Party Number CTI – Computer Telephony Intergration DLC – Digital Loop Carrier System DN – Directory Number DSL – Digital Subscriber Line DSLAM – Digital Subscriber Line Access Multiplexer DSP – Digital Signal Processor DTMF – Dual Tone Multi-Frequency ESS – Electronic Switching System ETSI - European Telecommunications Standards Institute GAP – Generic Address Parameter GT – Global Title GTT – Global Title Translations HFC – Hybrid Fiber Coax IAD – Integrated Access Device IAM – Initial Address Message ICP – Integrated Communications Provider ILEC -
Guidelines on Mobile Device Forensics
NIST Special Publication 800-101 Revision 1 Guidelines on Mobile Device Forensics Rick Ayers Sam Brothers Wayne Jansen http://dx.doi.org/10.6028/NIST.SP.800-101r1 NIST Special Publication 800-101 Revision 1 Guidelines on Mobile Device Forensics Rick Ayers Software and Systems Division Information Technology Laboratory Sam Brothers U.S. Customs and Border Protection Department of Homeland Security Springfield, VA Wayne Jansen Booz-Allen-Hamilton McLean, VA http://dx.doi.org/10.6028/NIST.SP. 800-101r1 May 2014 U.S. Department of Commerce Penny Pritzker, Secretary National Institute of Standards and Technology Patrick D. Gallagher, Under Secretary of Commerce for Standards and Technology and Director Authority This publication has been developed by NIST in accordance with its statutory responsibilities under the Federal Information Security Management Act of 2002 (FISMA), 44 U.S.C. § 3541 et seq., Public Law (P.L.) 107-347. NIST is responsible for developing information security standards and guidelines, including minimum requirements for Federal information systems, but such standards and guidelines shall not apply to national security systems without the express approval of appropriate Federal officials exercising policy authority over such systems. This guideline is consistent with the requirements of the Office of Management and Budget (OMB) Circular A-130, Section 8b(3), Securing Agency Information Systems, as analyzed in Circular A- 130, Appendix IV: Analysis of Key Sections. Supplemental information is provided in Circular A- 130, Appendix III, Security of Federal Automated Information Resources. Nothing in this publication should be taken to contradict the standards and guidelines made mandatory and binding on Federal agencies by the Secretary of Commerce under statutory authority. -
Introduction to Telecommunication Network
Fathur Afif Hari Gary Dhika April Mulya Yusuf AB A A A AB AB AB AB Anin Rizka A B Dion Siska Mirel Hani Airita AB AB AB AB AB www.telkomuniversity.ac.id Public Switch Telephone Network The Access Course Number : TTH2A3 CLO : 1 Week : 2 www.telkomuniversity.ac.id How do we connect telephone? One to One One to Two www.telkomuniversity.ac.id How do we connect telephone? Two to Two www.telkomuniversity.ac.id How do we connect telephone? www.telkomuniversity.ac.id How many copper cable needed for each line? Basically, only 2: • TD (Transmit Data) • RD (Receive Data) www.telkomuniversity.ac.id PSTN (Public Switch Telephone Network) • PSTN consists of groups of local networks, connected by long distance network • Main element of local network is customer premises equipment (CPE), copper cable that connect customer (subscriber) to local switch through main distribution frame (MDF). www.telkomuniversity.ac.id What are main characteristics of PSTN? • Analog, able to transfer 300-3400 Hz or 64 kbps • circuit-switched = with handshaking + dedicated path • Fixed station, limited mobility • Foundation of all telecommunication standard easy integration with ISDN, PLMN, PDN www.telkomuniversity.ac.id Three main networks in PSTN 1. Backbone network core network, connects all local exchange (switching unit within local network) 2. Access Network – connect subscriber to local exchange – Four types of access network: • Access Network with Copper • Access Network with Radio • Access Network with Fiber Optic • Access Network with Hybrid Fiber Coax (HFC) 3. Interconnection Network special backbone network, connect other licensed operator www.telkomuniversity.ac.id Three main networks in PSTN 1. -
Session 4. Transmission Systems and the Telephone Network Multiplexing
Session 4. Transmission Systems and the Telephone Network Dongsoo S. Kim Electrical and Computer Engineering Indiana U. Purdue U. Indianapolis Intro to Computer Communication Networks Multiplexing A A A Trunk A group B B B MUX MUX B C C C C Sharing of expensive network resources – wire, bandwidth, computation power, … Types of Multiplexing n Frequency-Division Multiplexing n Time-Division Multiplexing n Wavelength Division Multiplexing n Code-Division Multiplexing n Statistical Multiplexing ECE/IUPUI 4-2 1 Intro to Computer Communication Networks Frequency Division Multiplexing Bandwidth is divided into a number of frequency slots The very old technology n AM – 10 kHz/channel n FM – 200 kHz/channel n TV – 60 MHz/channel n Voice – 4 kHz/channel How It works n Each channel is raised in frequency by a different amount from others. n Combine them. n No two channels occupy the sample portion of the frequency spectrum Standards (almost) n group – 12 voice channel (60-108 KHz) n supergroup – 5 groups, or 60 voice channels n mastergroup – 5 or 10 supergroups. ECE/IUPUI 4-3 Intro to Computer Communication Networks Time-Division Multiplexing A single high-speed digital transmission Each connection produces a digital information The high-speed multiplexor picks the digital data in round-robin fashion. Each connection is assigned a fixed time-slot during connection setup. A 2 A 1 A 2 A 1 C 2 B 2 A 2 C 1 B 1 A 1 DEMUX B 2 B 1 MUX B 2 B 1 C 2 C 1 C 2 C 1 ECE/IUPUI 4-4 2 Intro to Computer Communication Networks Time-Division Multiplexing – Standards T-1 Carrier : 24 digital telephone n A frame consists of 24 slots, 8-bit per slot. -
A Life Cycle Assessment of Fibre Optic Submarine Cable Systems Craig
Twenty thousand leagues under the sea: A life cycle assessment of fibre optic submarine cable systems Craig Donovan Stockholm 2009 KTH, Department of Urban Planning and Environment Division of Environmental Strategies Research – fms Kungliga Tekniska högskolan Degree Project SoM EX 2009 -40 www.infra.kth.se/fms Twenty thousand leagues under the sea: A life cycle assessment o f fibre optic submarine cable systems Abstract Submarine cables carry the vast majority of transcontinental voice and data traffic. The high capacity and bandwidth of these cables make it possible to transfer large amounts of data around the globe almost instantaneously. Yet, little is known about the potential environmental impacts of a submarine cable from a life cycle perspective. This study applies Life Cycle Assessment (LCA) methodology to collect and analyse the potential environmental impacts of a submarine cable system within a single consistent framework. The system boundary is drawn at the limits of the terminal station where the signal is transferred to, or from, the terrestrial network. All significant components and processes within the system boundary have been modelled to account for the flow of resources, energy, wastes and emissions. Data quality analysis is performed on certain variables to evaluate the effect of data uncertainties, data gaps and methodological choices. The results highlight those activities in the life cycle of a submarine cable that have the largest potential environmental impact; namely, electricity use at the terminal station and cable maintenance by purpose-built ship. For example, the results show that 7 grams of carbon dioxide equivalents (CO 2 eq.) are potentially released for every ten thousand gigabit kilometres (10,000Gb·km), given current estimations of used capacity. -
Cellular Technology.Pdf
Cellular Technologies Mobile Device Investigations Program Technical Operations Division - DFB DHS - FLETC Basic Network Design Frequency Reuse and Planning 1. Cellular Technology enables mobile communication because they use of a complex two-way radio system between the mobile unit and the wireless network. 2. It uses radio frequencies (radio channels) over and over again throughout a market with minimal interference, to serve a large number of simultaneous conversations. 3. This concept is the central tenet to cellular design and is called frequency reuse. Basic Network Design Frequency Reuse and Planning 1. Repeatedly reusing radio frequencies over a geographical area. 2. Most frequency reuse plans are produced in groups of seven cells. Basic Network Design Note: Common frequencies are never contiguous 7 7 The U.S. Border Patrol uses a similar scheme with Mobile Radio Frequencies along the Southern border. By alternating frequencies between sectors, all USBP offices can communicate on just two frequencies Basic Network Design Frequency Reuse and Planning 1. There are numerous seven cell frequency reuse groups in each cellular carriers Metropolitan Statistical Area (MSA) or Rural Service Areas (RSA). 2. Higher traffic cells will receive more radio channels according to customer usage or subscriber density. Basic Network Design Frequency Reuse and Planning A frequency reuse plan is defined as how radio frequency (RF) engineers subdivide and assign the FCC allocated radio spectrum throughout the carriers market. Basic Network Design How Frequency Reuse Systems Work In concept frequency reuse maximizes coverage area and simultaneous conversation handling Cellular communication is made possible by the transmission of RF. This is achieved by the use of a powerful antenna broadcasting the signals. -
Kidsdictionary.Pdf
Access Charges: This is a fee charged by local phone companies for use of their networks. Amplitude Modulation (AM) that's the "AM" Band on your Radio: A signaling method that varies the amplitude of the carrier frequencies to send information. The carrier frequency would be like 910 (kHz) AM on your AM dial. Your radio antenna receives this signal and then decodes it and plays the song. Analog Signal: A signaling method that modifies the frequency by amplifying the strength of the signal or varying the frequency of a radio transmission to convey information. Bandwidth The amount of data passing through a connection over a given time. It is usually measured in bps (bits-per- second) or Mbps. Broadband Broadband refers to telecommunication in which a wide band of frequencies is available to transmit information. More services can be provided through broadband in the same way as more lanes on a highway allow more cars to travel on it at the same time. Broadcast To transmit (a radio or television program) for public or general use. In other words, send out or communicate, especially by radio or television. Cable A strong, large-diameter, heavy steel or fiber rope. The word history of cable derives from Middle English, from Old North French, from Late Latin capulum, lasso, from Latin capere, meaning to seize. Calling Party Pays A billing method in which a wireless phone caller pays only for making calls and not for receiving them. The standard American billing system requires wireless phone customers to pay for all calls made and received on a wireless phone. -
The Study on Telecommunications Development Plan, Ethiopia
The Study on Telecommunications Development Plan, Ethiopia CHAPTER 9 TELECOMMUNICATIONS NETWORK PLAN 9.1 Basic Concept of Proposed Network Plan The study of the Proposed Network Plan should necessarily include a broad range of factors, from the expected national socio-economic develpment, government policy to resource availability. Of particular importance are demands of the various services, including those services not available at present, and the extent of financial resources. Other important consideratios include the existing network, transition strategies, interworking with other networks, operation and maintenance, administrative structure, numbering, signalling and other fundamental plans. 9.1.1 Fundamental Network Plan The Network Master Plan is proposed considering: 1) The network is designed considering economical deployment and ease of operation and maintenance. 2) The proposed network will be deployed utilizing the latest technologies at present. 3) The network will be able to accommodate expected demand of existing and new application of basic telephone and non-telephone services that interface to the conventional networks. 4) The network should facilitate the development of ICT (Information and Communication Technology) covering the major areas of Ethiopia. 9.1.2 Evolution of Existing Network to IP Some countries have introduced IP telephony to converge the telephone network and data communication network. In order to utilze the accumulated assets economically and efficiently, the existing switching systems (PSTN) should -
(Gmrs) and Networked (Linked) Repeaters
ANALYSIS OF OLD & NEW RULES & REGULATIONS FOR THE GENERAL MOBILE RADIO SERVICE (GMRS) AND NETWORKED (LINKED) REPEATERS By P. Randall Knowles, J.D., KAA 8142 Approach to reviewing new version of FCC Rules for GMRS. We all have our own predispo- sitions and preferences what we think should be the nature of operation in GMRS. However, as is commonly the case when lawyers seek to interpret regulatory language, one should look at the commonly understood meaning of the actual language involved, including, in this case, all of the various relevant sections of the Rules in Part 95. Looking outside of the 4 corners of the GMRS Rules themselves for FCC intent is only justified if there is inherent ambiguity in the actual regu- latory language. Remote Control. The FCC Rules for GMRS have authorized “Remote Control” of GMRS Base (including “repeater”) stations for many decades. But this has been limited by the FCC, more re- cently starting in 1978, when the Commission acted to change the Rules to absolutely ban tele- phone interconnection. The background of this action began in August 1977 at the REACT International Conven- tion in Dallas Texas. When Dallas area REACT groups attempted to set up a repeater, it was discovered that a local radio shop had set up repeaters on all 8 channels with telephone “auto- patch”. This totally usurped all of GMRS in the area for one radio shop’s mobile telephone opera- tions. It took action by the FCC’s Field Operations Bureau to end this abuse, but the action was made more difficult because there was no specific GMRS rule preventing “autopatch”. -
Anarchists Cookbook V2000
ANARCHY COOKBOOK VERSION 2000 Table of Contents 1.Counterfeiting Money 58.Generic Bomb 2.Credit Card Fraud 59.Green Box Plans 3.Making Plastic Explosives 60.Portable Grenade Launcher 4.Picking Master Locks 61.Basic Hacking Tutorial I 5.The Arts of Lockpicking I 62.Basic Hacking Tutorial II 6.The Arts of Lockpicking II 63.Hacking DEC's 7.Solidox Bombs 64.Harmless Bombs 8.High Tech Revenge: The Beigebox 65.Breaking into Houses 9.COý Bombs 66.Hypnotism 10.Thermite II Bombs 67.Remote Informer Issue #1 11.Touch Explosives 68.Jackpotting ATM Machines 12.Letter Bombs 69.Jug Bomb 13.Paint Bombs 70.Fun at K-Mart 14.Ways to send a car to HELL 71.Mace Substitute 15.Do you hate school? 72.How to Grow Marijuana 16.Phone related vandalism 73.Match Head Bomb 17.Highway police radar jamming 74.Terrorizing McDonalds 18.Smoke Bombs 75."Mentor's" Last Words 19.Mail Box Bombs 76.The Myth of the 2600hz Detector 20.Hot-wiring cars 77.Blue Box Plans 21.Napalm 78.Napalm II 22.Fertilizer Bomb 79.Nitroglycerin Recipe 23.Tennis Ball Bomb 80.Operation: Fuckup 24.Diskette Bombs 81.Stealing Calls from Payphones 25.Unlisted Phone Numbers 82.Pool Fun 26.Fuses 83.Free Postage 27.How to make Potassium Nitrate 84.Unstable Explosives 28.Exploding Light bulbs 85.Weird Drugs 29.Under water igniters 86.The Art of Carding 30.Home-brew blast cannon 87.Recognizing Credit Cards 31.Chemical Equivalency List 88.How to Get a New Identity 32.Phone Taps 89.Remote Informer Issue #2 33.Landmines 90.Remote Informer Issue #3 34.A different Molitov Cocktail 91.Remote Informer Issue #4 35.Phone -
Phreaking Into the System
Exploding The Phone db186 www.explodingthephone.com Bibliographic Cover Sheet Title Phreaking into the system Publication Nation Review (Australia) Date 1972-09-01 V/I/P p. 1308 Abstract Overview of phone phreaking in Australia circa 1972, with descriptions of the three prevalent methods. Also discusses the way that the Australian phone system differs from the US system. Keywords phone phreaks; Australia; step-by-step exchange; crossbar exchange; Ramparts; AT&T; mute box (black box); blue box; Australian phreaking Source An anonymous phone phreak The following pages may contain copyrighted material. We believe that our use of this material for non-commercial educational and research purposes constitutes "fair use" under Section 107 of U.S. Copyright Law. If you wish to use this material for purposes that go beyond "fair use," you must obtain permission from the copyright owner, if any. While it will make us slightly sad to do so, we will nonetheless comply with requests from copyright owners who want their material removed from our web site. This article is published by way of a public service and dedicated to the post- master-general, sir Alan Hulme. S;r Alan, until you read this article, you will no-~ have any idea of what SEVEN DAYS a week, fifty two weeks a year, in a peak ilour intricate methods are s~t/t be~wc :n se~ en and clght pro, the AP.C disseminates oile being used to cheat your- of ~ts intellectually most dubious products: the weather self and the public purse fnrccast, tl,df an hour’s conversation with an honest metcorolc~:ist will convince anyone that while the ob~erva- of valuable revenue. -
Table of Contents
TABLE OF CONTENTS RULE T-1 Application of Rules ................................................................................................................................. 1 RULE T-2 Definitions ................................................................................................................................................... 1 RULE T-3 Records and Reports ............................................................................................................................... 6 RULE T-4 Metering, Inspections and Tests ......................................................................................................... 7 RULE T-5 Customer Relations .................................................................................................................................. 8 RULE T-6 Reasons for Denying Telephone Service ...................................................................................... 1 2 RULE T-7 Insufficient Reasons for Denying Telephone Service ............................................................. 13 RULE T-17.1 Notice of Termination of Reseller ................................................................................................... 13 RULE T-8 Voluntary Suspension .......................................................................................................................... 14 RULE T-9 Directories ................................................................................................................................................ 14 RULE