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LocalTalk is a particular implementation of the physical layer of the AppleTalk networking system from Apple Computer. LocalTalk specifies a system of shielded twisted pair cabling, plugged into self-terminating transceivers, running at a rate of 230.4 kbit/s. CSMA/CA was implemented as a random multiple access method. The useful life of PhoneNet was extended with the introduction of LocalTalk switching technology by Tribe Computer Works. Introduced in 1990, the Tribe LocalSwitch was a 16 port packet switch designed to speed up overloaded PhoneNet networks.

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  • LocalTalk (de)
  • LocalTalk (es)
  • LocalTalk (fr)
  • LocalTalk (en)
  • LocalTalk (ru)
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  • LocalTalk ist ein Begriff aus der Informatik und bezeichnet ein veraltetes, proprietäres Netzwerksystem von Apple. (de)
  • LocalTalk es una implementación particular de la capa física del sistema de redes AppleTalk de los ordenadores de la empresa Apple Inc.. LocalTalk se basa en un sistema de cable de par trenzado y un transceptor funcionando todo ello a una velocidad de 230'4 kbit/s. (es)
  • LocalTalk is a particular implementation of the physical layer of the AppleTalk networking system from Apple Computer. LocalTalk specifies a system of shielded twisted pair cabling, plugged into self-terminating transceivers, running at a rate of 230.4 kbit/s. CSMA/CA was implemented as a random multiple access method. The useful life of PhoneNet was extended with the introduction of LocalTalk switching technology by Tribe Computer Works. Introduced in 1990, the Tribe LocalSwitch was a 16 port packet switch designed to speed up overloaded PhoneNet networks. (en)
  • LocalTalk est la technique de réseau local d'Apple, basée sur des paires torsadées de 300 mètres de long maximum, et transmettant 230 kb/s en utilisant le protocole AppleTalk. Il s'agit essentiellement d'un RS485 à liaison par transformateur. La connectique garantit une terminaison correcte, tant qu'on ne réalise pas de boucle, ce qui autorise un câblage correct par un néophyte total. La topologie est celle d'une chaîne pouvant contenir jusqu'à 32 éléments. (fr)
  • LocalTalk — это конкретная реализация физического уровня сетевой системы AppleTalk компьютеров Apple. LocalTalk определяет систему экранирования витой пары, подключен к трансиверу работающим со скоростью 230,4 кбит/с. CSMA/CA был реализован как случайный множественный метод доступа. Во время планирования в Macintosh предусматривалось создание сети поэтому Mac получил дорогие последовательные порты с поддержкой RS-422. Порты управлялись Zilog SCC, который служил либо стандартом UART, либо обрабатывал гораздо более сложный протокол HDLC, который представлял собой пакетно-ориентированный протокол, включающий в себя адресацию, заполнение битов и проверку контрольных сумм в аппаратном обеспечении. В совокупности с электрическими соединениями RS422 это обеспечивало достаточно высокую скорость пе (ru)
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  • http://commons.wikimedia.org/wiki/Special:FilePath/Apple_LocalTalk_box_interior_1.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Apple_LocalTalk_box_interior_2_-_auto_termination_switch.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Farlon_localtalk.jpg
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  • Local cable and interior circuit board, port-side view (en)
  • Rear view of auto-termination switch with dust cover removed (en)
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  • Interior of Apple LocalTalk interface box. In 1989, these boxes typically cost US $90 each. The connectors feature automatic electrical termination of the LocalTalk signal bus; insertion of a LocalTalk bus cable depresses a normally closed switch behind the connector, disabling termination for that connector. (en)
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  • Apple LocalTalk box interior 1.jpg (en)
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