Knowledge (XXG)

Party line (telephony)

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402:"ring" followed by the two digits of the ring code where the first digit indicated the number of long rings, followed by the second digit indicating the number of short rings. Thus spoken, for example, as "nine, three; ring two, two" to mean subscriber No. 93 with ringing code 2 long and 2 short, and written as "93R22", (and if outside the given exchange, then the exchange would be asked for by name before the requested number and ringing code, e.g. "Rockridge nine, three; ring one, two" i.e. "(On the) Rockridge (exchange), (subscriber No.) nine, three; ring one long, and two short," and written as “Rockridge 93R12”. (The two examples cited in this paragraph are taken directly from usage in the 1935 American film 146: 185: 430:, the ringing circuit was separated from the talking circuit by adding a ground connection between the central office and the subscriber stations for ringing. On the same subscriber line, one party used the tip side of the line and ground for ringing, whilst the other party on the same line used the ring wire and ground for ringing, to achieve full selectivity for two-party lines, in which only the selected station would ring. These names for the wires are derived from the paired cord plugs—used on a manual switchboard—composed of three parts: the 769: 383: 315:, where most town residents had a telephone number of only three digits. To make a call outside the exchange area it was necessary to call the exchange to place a call. For rural residents, many were on a single telephone line identified by a number and a property name, such as "Gundabluie 1". Each party on that single line was identified by a letter, and the ringing pattern for that party would consist of the corresponding letter in 38: 408:.) Whilst this practice was common, it was not ubiquitous, since despite giving a standard configuration for terse, easily interpreted numbers with their respective ring codes, its chief functional drawback was with the first ring always being long and the second always being short, which limited the number of brief and thus practical ringing combinations that could be used on single multiparty subscriber numbers. 548:, but could also be employed as a form of early warning system for the immediate area, a user could alert all local residents at once. Party lines were typically operated using mechanical switching systems which recognized certain codes for revertive calls; these no longer work on modern electronic or digital switchgear. 453:, In combination with code ringing, this method could be extended to four and eight subscribers to reduce the number of disturbances. In several variations of divided ringing, also called grounded ringing, the bells were activated with polarized current, so that full selectivity was achieved for up to four parties. 607:
with one battery establishing a voltage difference between the two wires used for the voice channel and powering the whole network. They worked with wire stapled to wooden fenceposts, but worked better if the wire were insulated from the fencepost because rain tended to degrade operation of uninsulated systems.
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One variation of identifying the calling party on direct-dialed long-distance calls is a party code, usually a single digit inside a circle displayed on the phone's number tag. The dialing sequence for such calls is "1" (access number for DDD), the party code, the area code, and the desired number (1
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ringing code, every party on the same subscriber line could hear all the ringing codes. This meant firstly, frequently ringing telephones were a disruptive annoyance, as each party on the line had to stop to listen every time the telephone rang to determine if they were the party being called on any
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Telephone service for dispatchers and service personnel between way stations along railways used a form of party line service for many decades starting in the early 1900s. Railroad telephone systems often consisted of several dozen way stations interconnected with a shared line that used DC voltages
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These networks were documented as being in use across the American West and Canada, and sources claim they may have survived into the 1970's. A benefit of the simplicity and robustness of early telephones and networks is that they could be directly connected to the barbed wire with no modification,
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could be created in such a way as to allow the central office to determine which party placed an outbound toll call by detecting that one of the ringers was disconnected when that subscriber went off-hook. This system would fail if any provision was made to allow the subscriber to turn off the bells
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woman was indicted by a grand jury after her refusal to relinquish a party line delayed a volunteer firefighter's effort to report a grass fire. The fire destroyed a shed and a barn. She was given a suspended sentence. In June 1970, a sixteen-year-old girl and a woman were charged after refusing to
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Although various systems were implemented, one that limited the number of coded rings but established a uniform and readily understood format, was to first give the subscriber number as individual digits, which could be from one to four digits long per exchange, separated by the instructional word
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Another selective ringing system was based on using different ringing frequencies for each station on the party line. In North America, this was used mostly by independent telephone systems, while the Bell System abandoned frequency selective ringing in the early 1900s. Initially four frequencies
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Telephone companies offered party lines beginning in the late 1800s, although subscribers in all but the most rural areas may have had the option to upgrade to individual line service at an additional monthly charge. The service was common in sparsely populated areas where subscribers were spread
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All fully selective ringing systems on party lines still brought the inconvenience of finding the line in use occasionally, by hearing talking when one picked up the phone to make a call. All party lines also required special equipment to complete calls to another party on the same party line.
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The rapid growth of telephone service demand, especially after WWII, resulted in many party line installations in the middle of the 20th century in the United States. This often led to traffic congestion in the telephone network, as the line to a destination telephone was often busy. Nearly
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phones, the phone's own battery powered its transmitter as well as the receiver of the called phone. If too many phones were off-hook and listening, the additional receivers would load down the transmitter's battery with a voltage so low that no phone could receive an intelligible signal.
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could be used to transmit electric signals and connect telephones in neighboring farms. Such networks could be isolated to allow individual communication but were almost always party lines, and specific recipients were determined by manually generated ringing codes.
559:, even in the few areas where distance from the central office did not already preclude its use. Telephone companies typically do not allow client-owned equipment to be directly connected to party lines, posing an additional obstacle to their use for data. 522:
in North America) may be unable to identify which of multiple parties on a shared line placed a distress call; this is aggravated by the use of old mechanical switching equipment for party lines as this obsolete apparatus consistently provides no
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Many jurisdictions require a person engaged in a call on a party line to end the call immediately if another party needs the line for an emergency. Such laws also provide penalties for abuse by falsifying emergency situations. In May 1955, a
544:. Dialing one's own number and hanging up would make all phones on the network ring, resulting in the residents on the system (sometimes a half a dozen or more) all answering the phone at the same time. This was sometimes used as a form of 585:
These networks proliferated after some parts of Bell Telephone's patent structure expired in 1894, which made it possible for other companies to sell telephones that were then used for creating networks outside the Bell Telephone network.
710:-type crank phones. One ring is for the pack station, two rings is for the camp and three rings means "all cabins pick up." There are also eight emergency telephone stations located along the hiking trail. The system is a 370:
reported in 2000 that over 5,000 party lines still existed in the United States, but the majority of them were only connected to one telephone, and therefore appeared like individual telephone service at cheaper rates.
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While primitive lockout devices to prevent two subscribers from picking up the same line at the same time were proposed relatively early, multiple simultaneous calls did not become viable until the initial tests of
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subscribers in the mid-20th century in the United States and Canada were served by party lines, which had a discount over individual service. During wartime shortages, these were often the only available lines.
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often occurs. In isolated communities, party lines have been used for local service only, without the facilities to switch calls through a central office for connection to the public switched telephone network.
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infrastructure are also inherently a shared medium. Sufficiently high levels of usage of simultaneous active connections cause congestion on a mobile telephone network or impair transmission quality.
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1959 rates for telephone lines in Indiana. Subscribers in town could choose an individual line or a line shared by two or four parties. All rural lines were party lines shared with several neighbors.
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is located near the subscribers to connect multiple local subscriber loops to one common line to a central office exchange. A single optical fibre can also be shared between multiple subscribers in
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are connected to an inherently shared medium. The signal from the shared line is split to multiple subscribers. Signals for television, and data operate at various different carrier frequencies.
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With the advent of sophisticated electronics, telephone service providers developed methods to share a single copper line to transmit multiple telephone calls simultaneously. Various
277:. Meanwhile, the electro-mechanical switching equipment required for their operation was rapidly becoming obsolete, supplanted by electronic and digital switching equipment. The new 570:
were local networks created in rural America around the turn of the 20th century. In some isolated farming communities, it was not cost-effective for corporations to invest in the
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men on bookmaking charges was overturned as police had used a party-line telephone in a rented house on the same line as the suspects to unlawfully intercept their communications.
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with the goal of eventually connecting every city in the state. The main purpose of such networks was to transmit weather conditions and forecasts, as well as train schedules.
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As upgrades made party lines more popular in the 1940s, local telephone companies ran frequent ads to instill community spirit and personal courtesy in party-line subscribers.
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opportunities abounded. If one of the parties used the phone heavily, then the inconvenience for the others was more than occasional, as depicted in the 1959 comedy film
158:. In rural areas in the early 20th century, additional subscribers and telephones, often numbering several dozen, were frequently connected to the single loop available. 48: 173:
residential service in 1943 was party line, with users encouraged to limit calls to five minutes. Shortages persisted for years after each war; individual lines in
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to identify and correctly bill the calling party. In some cases, the calling party would misidentify themselves in an attempt to send the bill to another party.
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When the party line was already in use, if any of the other subscribers to that line picked up the phone, they could hear and participate in the conversation.
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With party-line service, particularly if there were more than two subscribers on the line, it was often necessary to complete a long-distance call through the
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was revealed to the opposing coach, when a telephone on the Ole Miss team's bench had been inadvertently wired to the same party line. In May 1952, an alleged
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Objections about one party monopolizing a multi-party line were a staple of complaints to telephone companies and letters to advice columnists for years and
165:, as well as a means of quickly alerting entire neighbourhoods of emergencies such as fires, becoming a cultural fixture of rural areas for many decades. 551:
Party lines are not suitable for Internet access. If one customer is using dial-up, it will jam the line for all other customers of the same party line.
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By the late 1980s, party lines were removed in most locales. They were not supported by new technologies and subscriber-owned equipment such as
330:, a rural area which once had as many as sixteen subscribers on one line. Universities also phased out the systems, which were once common in 1879: 1854: 1773: 507:(do not disturb) for privacy or unplug the telephone. It also presumed that each subscriber only had one telephone connected to the line. 1957: 121:
Party line systems were widely used to provide telephone service, starting with the first commercial switchboards in 1878. A majority of
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given ring. Secondly, if any party on a given line should so be inclined, there was the opportunity to listen to other parties' calls.
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was shut down after one month of operation in a rented storefront using a party-line telephone. In June 1968, the conviction of three
155: 1978: 82: 379:
To signal specific subscribers on party lines selectively, telephone operating companies implemented various signaling systems.
633: 528: 1917: 1747: 1668: 184: 1938: 343: 145: 733:
Party line telephone service was demonstrated in Season 5, Episode 33 (entitled "Party Line") of the television series
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phased out most of its party lines by 1997, and the last ones operating in Nevada shut down in 2001. As of 2002, SBC
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system, in which each telephone subscriber was assigned a specific ringing cadence, (not to be confused with modern
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One of the last manual telephone exchanges with party lines in Australia was closed down in 1986 in the township of
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used party lines, where a single line spanned miles from the nearest town to one property and on to the next.
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Party lines provided no privacy in communication. They were frequently used as a source of entertainment and
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where local loops are long and individual circuits are uneconomical when spread sparsely over a large area.
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with individual line service by November 1994, and the company's last party line finally shut down in 1996.
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subsidies, leading telephone companies to convert them to individual lines to benefit from these subsidies.
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An example of a community linked by a party line is in Big Santa Anita Canyon high in the mountains above
327: 294: 293:, but often was incompatible with multi-party lines. Party lines in the United States were ineligible for 177:
remained in short supply at the end of 1919 and similar shortages were reported by telephone companies in
1817: 1636: 1566: 1539: 1513: 1487: 1461: 1435: 1417: 1391: 1339: 1313: 1287: 1269: 1233: 1207: 1189: 1137: 1080: 1026: 999: 981: 930: 471: Hz. Combined with divided ringing, this provided fully selective service for up to eight stations. 1365: 1251: 1053: 868: 339: 282: 1609: 2008: 649: 641: 600: 492: 255: 231: 220: 2082: 1700: 645: 250: 382: 1732: 957: 591: 540: 278: 1895: 1780: 1754:. International Library of Technology. Scranton, PA: International Textbook Company. p. 20 1875: 1850: 1664: 774: 707: 571: 484: 411:
Further to this functional deficiency, was a twofold practical deficiency. For though one was
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across large distances. An example is Australia where these were operated by the Government
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as late as 1948. Some rural users had to run their own wires to reach the utility's lines.
1807:, US patent 3461246 filed July 22, 1966 by Schneider Gerhard O K of Stromberg Carlson Corp 962: 787: 722: 286: 1986: 821: 346:
abandoned its last party lines in 1991, the last in that state to do so. The same year,
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relinquish a party line to allow a distress call as three boys drowned in a pond in
1654: 853: 663: 357: 312: 290: 170: 134: 2067: 714:. Maintenance of the line was assumed by the association of cabin owners in 2018. 319:. This distinctive ring would alert all parties on the line who the call was for. 19:
This article is about shared service telephone lines. For dating party lines, see
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British users similarly benefited from the party line discount. Farmers in rural
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were used, which were based on a system of harmonic multiples of a frequency of
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prevented interference between simultaneous calls. A distant suburb may have a
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devices in 1955. Any handset off-hook therefore tied up the line for everyone.
1804: 1726: 797: 764: 683: 552: 545: 404: 316: 239: 212: 112: 1081:"Sharing a party telephone line is a lot like saying 'hop in' to a neighbour" 802: 792: 744: 625: 524: 366: 361: 331: 242: 130: 115: 24: 20: 423:
More selective ringing methods were introduced using various technologies.
671: 395: 271: 174: 1687: 1208:"Suspected Bookie 'Joint' Had City Store License, Party-Line Telephone" 687: 596: 178: 442:, each of these three components being insulated from one another. 162: 23:. For conference calls spoken over busy signals or test numbers, see 1958:"Barbed Wire Telephone Lines Brought Isolated Homesteaders Together" 230:
officials refused a request from a public utilities commissioner in
1660:
My Kind of Place: Travel Stories from a Woman Who's Been Everywhere
1138:"Subscriber to party line telephone asks how to cope with line hog" 616:
as high as 400 V for selective signaling to alert called stations.
1270:"New invention ensures privacy on rural and party telephone lines" 982:"If you use a party-line telephone: be a good telephone neighbour" 578: 381: 351: 274: 183: 144: 118:
circuit that is shared by multiple telephone service subscribers.
706:. A group camp, a pack station and 81 cabins all communicate by 1514:"Sons drown while mum tries to get use of party line telephone" 836:"The Party Wire, the 3/22/1919 Norman Rockwell Leslie's Cover" 740: 350:
announced its intentions to replace all of its party lines in
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deal primarily with the United States and do not represent a
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from the original on December 21, 2021 – via YouTube.
1252:"There'll be no color line on telephone party line in Miss" 822:"Party Line – Definition of Party line by Merriam-Webster" 445:
In the Bell System, the two stations were thus called the
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announced plans to gradually phase out all party lines in
1918:"A Brief History Of Barbed Wire Fence Telephone Networks" 364:'s only operating party lines were located in Michigan. 234:
to segregate party telephone lines on racial boundaries.
1567:"Party line customers hang it up in rural West Virginia" 1546:. United Press International. July 11, 1971. p. 10C 514:
Systems which identify the caller's name and address to
56: 1939:"Montana Ranchmen Making a General Use of the Fences" 1000:"Party line phones show tremendous increase in state" 1108:"Early telephone operator recalls party (line) days" 1190:"Party line helped Ole Miss hold Tennessee to 14–0" 1054:"Co-operation wins on the telephone party line too" 1052:Peninsular Telephone Company (October 13, 1948). 1006:. Beaver and Rochester. April 20, 1943. p. 4 483:In the local-battery system of the early cranked 1911: 1909: 1705:Fundamentals of Telephone Communication Systems 1610:"It's the end of the party line in Connecticut" 1340:"Convict woman who refused to yield party line" 1818:"Telephone company seeks 'party line pirates'" 326:replaced party lines with individual lines in 1979:"Big Santa Anita Canyon Map & Facilities" 1872:The Information: A History, a Theory, a Flood 1746:International Correspondence Schools (1916). 743:. Party lines were a focal plot point of the 712:single wire using the ground as a return path 45:The examples and perspective in this article 8: 869:"privateline.com's Telephone History Series" 438:separated by a narrow metal band called the 1846:Romantic Comedy: Boy Meets Girl Meets Genre 1596:. Bloomington, IL. May 17, 1990. p. 2. 1540:"Telephone party line a victim of progress" 1288:"New gimmick will end party line listening" 1164:"Telephone party lines kept everyone abuzz" 980:Telephone & Telegraph (July 10, 1942). 1520:. United Press International. June 4, 1970 1494:. United Press International. June 4, 1970 1106:Cindy McCleish Ingram (January 18, 2010). 937:(Advertisement). April 21, 1897. p. 3 895:, NSW State Parliament speech, May 3, 2000 682:Party lines are still in use primarily in 1849:. Columbia University Press. p. 71. 1436:"Girl charged in not yielding phone line" 1079:New York Telephone (September 26, 1946). 931:"'Party Line' telephone exchange service" 599:were instituting a telephone exchange in 83:Learn how and when to remove this message 1637:"Death of party line may not be far off" 1418:"Party line tied up as three boys drown" 338:terminated its last party line in 1990. 324:Chesapeake and Potomac Telephone Company 813: 2039:"Chantry Flats Crank Telephone System" 662:Digital wireless connections, such as 390:The earliest selective system was the 196:on calls remained an ongoing concern. 1956:Frost, Natasha (September 25, 2017). 1608:Cappiello, Janet L. (April 1, 1991). 1592:"Regents' panel OKs phone proposal". 1565:Kissel, Kelly P. (October 13, 1989). 721:has occasionally been used to market 7: 893:Subscriber Trunk Dialling Call Zones 511:+ party code + area code + number). 1824:. Salt Lake City, UT. June 24, 1919 1635:Mabray, D'Ann (September 6, 1992). 725:and voice bulletin board services. 1114:. Associated Press. Archived from 1027:"Two-party-line telephone service" 574:. Instead, the existing extent of 14: 1916:Emerson, Lori (August 31, 2024). 1025:Bell Canada (December 31, 1919). 1843:McDonald, Tamar Jeffers (2013). 1701:"Chapter 3 Local Manual Systems" 1392:"Listening in on the party line" 1366:"Party line hog is found guilty" 854:"Telephones UK – Shared Service" 767: 555:made party lines unsuitable for 36: 634:frequency-division multiplexing 529:automatic number identification 498:A two-party line split between 156:Postmaster General's Department 1779:. June 3, 2009. Archived from 1752:Subscribers' Station Equipment 1663:. New York, NY: Random House. 1573:. Associated Press. p. 7C 1144:. February 8, 1967. p. 10 955:Such a system in described in 739:, which aired May 29, 1960 on 1: 2068:Party Line intercept messages 1616:. Associated Press. p. 6 1142:The Virgin Islands Daily News 906:"Telkom South Africa History" 344:independent telephone company 16:Type of shared telephone line 1728:Party Wire (1935) Full Movie 1314:"A menace to the party line" 840:Best-Norman-Rockwell-Art.com 670:running over rural wireless 1424:. June 8, 1970. p. 10. 568:Barbed wire telephone lines 563:Barbed wire telephone lines 516:emergency telephone numbers 59:, discuss the issue on the 2099: 1896:"Barb Wire Telephone Line" 1320:. May 14, 1955. p. 40 1258:. May 1, 1956. p. 20. 1214:. May 29, 1952. p. 19 1112:New Orleans Times-Picayune 1087:(Advertisement). p. 3 1060:(Advertisement). p. 3 1033:(Advertisement). p. 4 630:time-division multiplexing 595:reported that ranchers in 18: 2063:Atlanta telephone history 1468:. June 8, 1970. p. 1 1372:. May 18, 1955. p. 1 1346:. May 18, 1955. p. 1 736:Alfred Hitchcock Presents 336:Illinois State University 285:calling features such as 209:University of Mississippi 2009:"Big Santa Anita Canyon" 1294:. May 9, 1955. p. 7 1256:Washington Afro-American 729:Usage in Popular Culture 717:In modern use, the term 704:Sierra Madre, California 572:telephone infrastructure 2016:Angeles National Forest 1748:"Party Line Telephones" 1690:Archives, June 6, 2012. 1488:"Party line pleas fail" 638:subscriber loop carrier 217:St. Petersburg, Florida 201:University of Tennessee 1870:Gleick, James (2011). 1805:Revertive call circuit 1571:Lawrence Journal-World 1234:"Party line protected" 1168:Mercer Island Reporter 387: 328:Talcott, West Virginia 295:Universal Service Fund 189: 150: 1641:The Victoria Advocate 1396:The Milwaukee Journal 1238:The Milwaukee Journal 935:Dubuque Sunday Herald 527:and often also lacks 385: 340:Woodbury, Connecticut 283:vertical service code 187: 149:Circuit diagram, 1905 148: 2041:. Canyon Cartography 1822:Deseret Evening News 1731:. January 11, 2015. 1518:Ludington Daily News 1422:The Pittsburgh Press 1370:Oxnard Press-Courier 1212:St. Petersburg Times 1196:. December 13, 1942. 1058:St. Petersburg Times 650:fibre to the cabinet 642:digital loop carrier 256:Walsenburg, Colorado 232:Jackson, Mississippi 221:Winter Park, Florida 65:create a new article 57:improve this article 2018:. US Forest Service 1983:Adam's Pack Station 1170:. November 24, 2008 958:McCullough, Colleen 646:remote concentrator 332:student dormitories 251:Rhinebeck, New York 105:shared service line 1989:on January 8, 2007 1943:The New York Times 1874:. Pantheon Books. 1707:. Western Electric 1466:Lodi News-Sentinel 1398:. January 23, 1959 1274:The Morning Leader 723:conference calling 644:system in which a 592:The New York Times 388: 281:equipment offered 279:telephone exchange 268:answering machines 203:'s strategy in an 199:In December 1942, 190: 169:three-quarters of 151: 1902:. April 19, 1900. 1881:978-0-375-42372-7 1856:978-0-231-50338-9 1276:. April 25, 1925. 1085:The Newburgh News 874:. Privateline.com 775:Telephones portal 426:In the system of 375:Selective ringing 348:Southwestern Bell 205:American football 93: 92: 85: 67:, as appropriate. 2090: 2051: 2050: 2048: 2046: 2034: 2028: 2027: 2025: 2023: 2013: 2005: 1999: 1998: 1996: 1994: 1985:. 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Index

Chat line
Beep line
worldwide view
improve this article
talk page
create a new article
Learn how and when to remove this message
local loop
telephone
Bell System
Australia
South Africa

Postmaster General's Department
gossip
Pennsylvania
Montreal
Florida

eavesdropping
University of Tennessee
American football
University of Mississippi
bookmaking
St. Petersburg, Florida
Winter Park, Florida
Southern Bell
Jackson, Mississippi
transistorised
pair gain

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