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Operator Toll Dialing: Cord Signals

Educational

Operator Toll Dialing: Cord Signals

19493mUnited StatesEnglishPublic domainFree to watch

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Instructional film for telephone operators.

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APAudio Productions, IncProducerBSBell SystemProducer

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  • MP4480p640×480 · h26419.8 MB
  • MP4240p320×240 · mpeg413.7 MB
  • Original scanOriginal scan640×48088.8 MB

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  • EnglishAI draftInternet Archive ASR.vtt

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