Winter 2019, Vol
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EE 122: Networks & Protocols Welcome Our New TA
EE 122: Networks & Protocols Ion Stoica (and Brighten Godfrey) TAs: Lucian Popa, David Zats and Ganesh Ananthanarayanan http://inst.eecs.berkeley.edu/~ee122/ (Materials with thanks to Vern Paxson, Jennifer Rexford, and colleagues at UC Berkeley) 1 Welcome our New TA Ganesh Ananthanarayanan E-mail: [email protected] Office hours: WF 11-12; location: TBA Discussion section: TBA 2 1 Goals for Today’s Class Type of Networks And the key concept of multiplexing What’s a Protocol ? 3 What Global (non-digital) Communication Network Do You Use Every Day? Roughly speaking, how does it work? 4 2 What’s Another Such Network That You Use Every Day? 5 Taxonomy of Communication Networks Communication networks can be classified based on the way in which the nodes exchange information: Communication Network 6 3 Taxonomy of Communication Networks Communication networks can be classified based on the way in which the nodes exchange information: Communication Network Broadcast Communication Network 7 Broadcast Communication Networks Information transmitted by any node is received by every other node in the network Examples? Usually in LANs ( Local Area Networks) E.g., Ethernet (classical), WiFi E.g., lecture! What problems does this raise? Problem #1: limited range Problem #2: privacy of communication Problem #3: coordinating access to the shared communication medium ( Multiple Access Problem ) 8 4 Taxonomy of Communication Networks Communication networks can be classified based on the way in which the nodes exchange information: -
Historical Perspectives of Development of Antique Analog Telephone Systems Vinayak L
Review Historical Perspectives of Development of Antique Analog Telephone Systems Vinayak L. Patil Trinity College of Engineering and Research, University of Pune, Pune, India Abstract—Long distance voice communication has been al- ways of great interest to human beings. His untiring efforts and intuition from many years together was responsible for making it to happen to a such advanced stage today. This pa- per describes the development time line of antique telephone systems, which starts from the year 1854 and begins with the very early effort of Antonio Meucci and Alexander Graham magnet core Bell and ends up to the telephone systems just before digiti- Wire 1Coil with permanent Wire 2 zation of entire telecommunication systems. The progress of development of entire antique telephone systems is highlighted in this paper. The coverage is limited to only analog voice communication in a narrow band related to human voice. Diaphragm Keywords—antique telephones, common battery systems, cross- bar switches, PSTN, voice band communication, voice commu- nication, strowger switches. Fig. 1. The details of Meucci’s telephone. 1. Initial Claims and Inventions Since centuries, telecommunications have been of great cally. Due to this idea, many of the scientific community interest to the human beings. One of the dignified per- consider him as one of the inventors of telephone [10]. sonality in the field of telecommunication was Antonio Boursuel used term “make and break” telephone in his Meucci [1]–[7] (born in 1808) who worked relentlessly for work. In 1850, Philip Reis [11]–[13] began work on tele- communication to distant person throughout his life and in- phone. -
Telephonyisdn • LATA • POTS • DLC • LEC 8 ATM • ISDN101 • LATA • POTS • DLC • LEC • ATM • ISDN • LATA • POTS • DLC • LEC • ATM • ISDN • LATA •
TelephonyISDN • LATA • POTS • DLC • LEC 8 ATM • ISDN101 • LATA • POTS • DLC • LEC • ATM • ISDN • LATA • POTS • DLC • LEC • ATM • ISDN • LATA • A Basic Introduction to How Telephone Services Are Delivered in North America IntroductionISDN • LATA • POTS • DLC • LEC 8 ATM • ISDN • LATA • POTS • DLC • LEC • ATM • ISDN • LATA • POTS • DLC • LEC • ATM • ISDN • LATA • The much touted “convergence” of a range of key communications industries— cable TV, computers, local and long distance telephone service providers, among others—has added myriad new players to the market for telephony services. And, of course, in the thriving telecommunications market, new individuals are joining both established and new telephony companies every day. While the stunning simplicity of the interface to the public switched network— the telephone—largely masks the complexity of the technology from the general public, the public network is, after all, the most massive and sophisticated net- working system ever created. New entrants to the telephony business have an obvious need for a thumbnail introduction to a set of technologies and services that at first can seem daunting in their reach and complexity. Telephony 101 is intended to begin filling this need by providing a basic under- standing of how telephone services are currently delivered in North America. First, it provides a concise overview of the impressive list of revenue-producing ser- Draw on Our Experience vices that make the market so inviting to This book provides your basic begin with. It then provides a basic look at introduction to telephony. But the access, switching, and transmission no beginning course has ever provided all the answers. -
Switching Relations: the Rise and Fall of the Norwegian Telecom Industry
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by NORA - Norwegian Open Research Archives Switching Relations The rise and fall of the Norwegian telecom industry by Sverre A. Christensen A dissertation submitted to BI Norwegian School of Management for the Degree of Dr.Oecon Series of Dissertations 2/2006 BI Norwegian School of Management Department of Innovation and Economic Organization Sverre A. Christensen: Switching Relations: The rise and fall of the Norwegian telecom industry © Sverre A. Christensen 2006 Series of Dissertations 2/2006 ISBN: 82 7042 746 2 ISSN: 1502-2099 BI Norwegian School of Management N-0442 Oslo Phone: +47 4641 0000 www.bi.no Printing: Nordberg The dissertation may be ordered from our website www.bi.no (Research - Research Publications) ii Acknowledgements I would like to thank my supervisor Knut Sogner, who has played a crucial role throughout the entire process. Thanks for having confidence and patience with me. A special thanks also to Mats Fridlund, who has been so gracious as to let me use one of his titles for this dissertation, Switching relations. My thanks go also to the staff at the Centre of Business History at the Norwegian School of Management, most particularly Gunhild Ecklund and Dag Ove Skjold who have been of great support during turbulent years. Also in need of mentioning are Harald Rinde, Harald Espeli and Lars Thue for inspiring discussion and com- ments on earlier drafts. The rest at the centre: no one mentioned, no one forgotten. My thanks also go to the Department of Innovation and Economic Organization at the Norwegian School of Management, and Per Ingvar Olsen. -
From AT&T/Lucent 3G Third Generation (Mobile Network) 3GPP
1-ESS x-ESS series of "Electronic Switching Systems" from AT&T/Lucent 3G Third Generation (Mobile Network) 3GPP Third-Generation Partnership Project 3WC Three Way calling 4GL Fourth-Generation Language 800 or 888 Freephone 802.x Series of LAN standards developed by IEEE 911 Emergency telephone number in North America AAV Alternative Access Vendor ABR Available Bit Rate Access Control, or Alternating Current, or Authentication Center (also AC AUC) ACD Automatic Call Distributor ACE Authentication Encryption ACEK Authentication Encryption Key ACK Acknowledgement ACP Access Control Point ACRE Authorization and Call Routing Equipment ADM Add-Drop Multiplexer (SDH Element) ADPCM Adaptive Differential Pulse Code Modulation ADSL Asymmetric Digital Subscriber Line AGRAS Air-Ground Radiotelephone Automated Service AIOD Automatic Identification of Outward Dialed calls AIN Advanced Intelligent Network (ANSI IN Standard) A-key Authentication key ALI Automatic Location Information AM Amplitude Modulation AMPS Advanced Mobile Phone System ANI Automatic Number Identification ANS Advanced Network Services ANSI American National Standards Institute ANSI-41 ANSI standard for mobile management (ANSI/TIA/EIA-41) ANT ADSL Network Terminator AOA Angle of Arrival AOL America On Line (ISP) API Application Programming Interface APPC Advanced Program-to Program Communications (IBM SNA) APPN Advanced Peer-to-Peer Network (IBM SNA) ARCnet Attached Resource Computer Network (Datapoint) ARDIS Advanced Radio Data Information Service ARP Address Resolution Protocol ARPA -
The Information Act the Numbering Crisis in World Zone 1
The Information Act Brian Hayes Annan, Octopus, 1990 The Numbering Crisis in World Zone 1 i carcity is no stranger in this land of I ten-digit numbers are possible telephone or a ladder without rungs—I couldn't .plenty. From time to time it seems I numbers. Indeed, more than 90 percent fathom the use of it. Then my grand • we are running out of fuel, out of wa of them are unacceptable for one reason mother demonstrated. She picked up the ter, out of housing, out of wilderness, out or another. A telephone number is not receiver and said, "Jenny, get me Mrs. of ozone, out of places to put the rubbish, just an arbitrary sequence of digits, like Wilson, please. Thank you, dear." out of all the stuff we need to make more the serial number on a ticket stub; it has My grandmother's telephone was al rubbish. But who could have guessed, as a surprising amount of structure in it. As a ready quite an anachronism when I first the millennium trundles on to its close, matter of fact, the set of all valid North saw it in the 1950s. Automatic switching that we would be running out of num American telephone numbers constitutes gear—allowing the customer to make a bers? That was one resource everyone a formal language, analogous to a com connection without the help of an opera thought was infinite. puter programming language. When you tor—had been placed in service as early as The numbers in short supply are tele dial a telephone, you are programming 1892. -
TARIFF DISTRIBUTION FILE PACKAGE NO.: FL-17-0074 DATE: October 1, 2017 STATE: FLORIDA EFFECTIVE DATE: 10/01/2017 TYPE of DISTR
TARIFF DISTRIBUTION FILE PACKAGE NO.: FL-17-0074 DATE: October 1, 2017 STATE: FLORIDA EFFECTIVE DATE: 10/01/2017 TYPE OF DISTRIBUTION: Approved PURPOSE: This update changes multiple sections of the guidebook in support of directory cessation efforts in FL. TARIFF SECTION PAGE NUMBER PAGE REVISION G001 8 0002 G001 11 0002 G001 12 0002 G001 13 0003 G001 15 0003 G002 3 0002 G002 8 0003 G002 9 0002 G002 10 0002 G003 36 0002 G003 39 0002 G003 40 0004 G003 42 0003 G004 3 0001 G006 1 0003 G006 2 0002 G006 3 0001 G006 4 0004 G006 5 0004 G006 6 0001 G006 7 0001 G006 8 0001 G006 9 0002 G006 10 0003 G006 11 0002 G006 12 0002 G006 13 0001 G006 14 0001 G007 2.1 0001 G012 1 0002 G012 3 0002 G012 13 0002 G012 14 0002 G012 18 0002 G012 37 0002 G012 42 0002 G013 19 0013 G013 23 0003 G013 25 0004 G013 52 0002 G013 75 0004 G013 78 0002 G013 79 0002 G013 83 0004 G018 20 0007 G023 5 0002 G023 7 0002 G035 1 0002 G042 51 0004 G103 41 0002 G103 49.1 0013 G106 1 0001 G112 128 0002 G112 137 0002 G112 205 0002 G112 212 0002 G112 222 0002 G112 264 0002 G112 328 0002 G112 360 0002 G112 419 0002 G112 429 0002 G112 459 0002 G112 528 0002 G112 560 0002 G112 570 0001 G112 625 0002 G112 632 0002 G113 5 0002 G113 8 0002 G113 20 0002 G119 13 0002 G119 17 0002 G139 2 0002 G106 Cont. -
BEGINNINGS of AUTOMATIC TELEPHONY Part II Only a Very Few
60 BEGINNINGS OF AUTOMATIC TELEPHONY Part II Only a very few engineers who are fascinated flattened out, drowned in the anonymous not only by the future development of tele mass of fellow~engineers. There is no longer phony, but also by its past history, still find any question of anyone leaving a personal it worth while to contemplate and try to under stamp on a product or system, which will be stand the vestiges of the early days of electro known only by a trade name or even by a mere mechanics. symbol followed by a serial number. No museum has so far engaged in the syste matic collection ofthese souvenirs of the past, 1.5.2. Things were different in the 1890s. In except for a few parts or models which have an area which was as yet unexplored and had . been saved from destruction and are scattered no precedents, an inventor could give free rein among various national telecommunication to his imagination and could dream of suc museums. Nor is there any detailed mono cess. Relatively small resources were required, graph on the subject which would show the but a great deal of ingenuity and very often diversity of designs. Such a work would re cooperation which began within the family quire long and patient research and, if it were itself: ever undertaken, it would certainly have to "Brothers and other relatives working to 4 mention three fundamental references ): gether were not unusual. The brothers Con -the article by P.C. Smith which appeared in nolly are only one example. -
Searchable PDF Index
TELEPHONE COLLECTORS INTERNATIONAL Telephone Collectors International is an organization of telephone collectors, hobbyists and historians who are helping to preserve the history of the telecommunications industry through the collection of telephones and telephone related material. Our collections represent all aspects of the industry; from the very first wooden prototypes that started the industry to the technological marvels that made the automatic telephone exchange possible. If any of this interests you, we invite you to join our organization. Look around and see what we have to offer. Thanks for stopping by! Telephone Collectors International website including become a member: http://www.telephonecollectors.org/ Questions or comments about TCI? Send e-mail to [email protected] ********************************************************************************* Books Recommended by the editors: Available now ... Old-Time Telephones! Design, History, and Restoration by Ralph O. Meyer ... 264pp Soft Cover 2nd Edition, Expanded and Revised ... A Schiffer Book with Price Guide for Collectors Available at Phoneco.com or Schiffer Publishing, Ltd., 4880 Lower Valley Rd, Atglen, PA 19310 e-mail: [email protected] ********************************************************************************** Coming Soon: TELEPHONE Dials and Pushbuttons Their History, Development and Usage by Stanley Swihart ... 2 volumes, 300 pp ea. Box 2818, Dublin, CA., 94568-0818. Phone 1 (925)-829-2728, e-mail [email protected] ********************************************************************************* -
Listing of Various Vintage Switching, Telecom, and Teletype Tools, Part 1
C.O. and Strowger Switch/Other Telecom Tools Part 1 Etelco BT The following are some of the tools in the collection of the Telephone Museum of P.E.I. - they are not for sale. I am posting this on the site, as it provides a good listing of the tools available from each manufacturer, plus descriptions of the designed usage from the manufacturer's catalogs. This is by no means a complete listing of all tools manufactured and used in the telecom industry. There was a specialty tool designed for just about every job. You may note some items marked as not yet received. These are items on order, or that are in the mail to me. I am continually looking for tools to add to this collection - Dave Hunter, [email protected]: I have only listed a few of the Butt sets in the collection. I have 20-30 in the collection, but have only listed a few of the more common types. I have a number which were conversions of non-dial butt sets which have had dial shrouds added as well. The early items I put on this list do not have accompanying photos. Recent additions do have photos, and as I get time, I will gradually re-vamp the listing to include photos for all items listed. The latest versions of these files may be downloaded from: Part 1: http://www.islandregister.com/phones/tools_switching.pdf Part 2: http://www.islandregister.com/phones/tools_switching2.pdf WE/NE/Bell C.O. Tools: NE-1014B - Aug 22, 2012 - This is a 1014B donated by Barry McCallum and was a kit which included the NE-20B case, an NE715A tool, NE 716A tool, NE716B tool, NE717B tool, 1 Box containing four NE 718A tools, Container containing eight P12B536 tubes, NE 666B tool, NE 674 tool, and a container holding one NE 689A contact separator. -
Frontier West Virginia Inc. General Services Tariff Part 1
Case No. 10-099 1-T-T Frontier West Virginia Inc. General Services Tariff 203 Part 1 P.S.C.-W.Va.-No.203 Frontier West Virginia Inc. Original Title GENERAL SERVICES TARIFF Containing Regulations and Rates applicable to the furnishing of General Telecommunications Services for West Virginia by Frontier West Virginia Inc. The name Bell Atlantic - West Virginia, Inc. has been changed to Frontier West Virginia Inc. All references throughout this Tariff to Bell Atlantic - West Virginia, Inc., “the Telephone Company” or “the company” shall be read as Frontier West Virginia Inc. Issued by authority of an Order of the Public Service Commission of West Virginia in Case No. Dated Issued: January 8, 2001 Effective: January 8, 2001 GENERAL SERVICES TARIFF P.S.C.-W.Va.-No.203 Frontier West Virginia Inc. Contents 3rd Revised Page 1 Cancels 2ndRevised Page 1 TABLE OF CONTENTS Section APPLICATION OF TARIFF ................................................... 1 CONSTRUCTION CHARGES .................................................... 2 EXCHANGE OPERATING SERVICES ............................................. 2A SERVICE CHARGES ......................................................... 3 DIRECTORY LISTINGS ...................................................... 4 TELEPHONE DIRECTORIES................................................... 4B . DISCOUNTS ............................................................... 5 SUPPLEMENTAL EQUIPMENT .................................................. 6 PREFERRED TELEPHONE NUMBER SERVICE ..................................... -
Ode to Charles: Friend, Neighbor
November 24, 2020 The Our 27th Year of Publishing FREE (979) 849-5407 PLEASE Weekly © 2020 Bulletin mybulletinnewspaper.com TAKE ONE LAKE JACKSON • CLUTE • RICHWOOD • FREEPORT • OYSTER CREEK • JONES CREEK • ANGLETON • DANBURY • ALVIN • WEST COLUMBIA • BRAZORIA • SWEENY Ode to Charles: Is it COVID or friend, neighbor just the crud? By Edward A. Forbes By John Toth The Bulletin The Bulletin Thanks for the memories, Charles I woke up in the middle of the and Linda Miller. night, freezing. The thermostat read They were dear friends. During 78 degrees. Why was I shaking? a difficult time in my life, they were My joints were hurting. I jumped friends to me and my children. I into a nice, warm shower and took couldn’t have loved them more. two Advil. Home duties permitting, I always Did I catch COVID? That’s the stopped at the Millers on my way first thought that ran through my home. mind. Charles sat outside his home, I wear a mask in public, stay away or later, in the screened sun room from crowds, wash my hands, use added to their home. Charles and hand sanitizer and do everything I each had a beer - Miller Lite, of course, and he would smoke a ciga- rette. I had quit smoking in 1991 and Ramblings (Continued on Page 12) else I am supposed to. But I felt like crud, and the pandemic was the first thing I thought of. Leon Hale asked I didn’t have all the COVID symp- toms. But with this pandemic, you never know. Anything is possible.