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June 1961, Issue 1. 568HT is an early touch tone set with 22-type dial including red P (Priority) and SG (Special Grade) buttons and round line keys. For 2- and 4-wire service. SG connected to a 4-wire line if available. Replaced by the 1568HT, which had square line keys. Early dials had a different button contour than the 25-type dials used on the 1500-series production sets. 568HB has a rotary dial. Contributed by Dennis Hock.

pdf C38.595.06 i2 Oct62 568 Types Telephone Identification Popular

Published on 15 January 2018 Modified on 12 July 2020 By Remco E 362 downloads

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pdf C38.595.07 i1 Nov62 513 Type Telephone Identification Popular

Published on 15 January 2018 Modified on 12 July 2020 By Remco E 402 downloads

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C38.595.07_i1_Nov62_513_Type_Telephone_Identification.pdf

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pdf C38.595.1 i1 Oct58 500 501,507 509 532 533 536 554 556 Types Telephones Identification Popular

Published on 15 January 2018 Modified on 12 July 2020 By Remco E 407 downloads

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C38.595.1_i1_Oct58_500_501,507_509_532_533_536_554_556_Types_Telephones_Identification.pdf

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pdf C38.597.03 i1 Sep63 540 560 1560 Series Telephones Installation Popular

Published on 15 January 2018 Modified on 12 July 2020 By Remco E 323 downloads

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C38.597.03_i1_Sep63_540_560_1560_Series_Telephones_Installation.pdf

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pdf C38.599.2 i2 Aug63 502 503 510 511 513 558 1510 Types Telephones Maintenance Popular

Published on 15 January 2018 Modified on 12 July 2020 By Remco E 308 downloads

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C38.599.2_i2_Aug63_502_503_510_511_513_558_1510_Types_Telephones_Maintenance.pdf

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Folder C33 - C38: Dials, Transmitters, Receivers, Cords

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