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Article #619765

Re: 1956 -- circuit reliability book

#619765
From: Scott Lurndal
Date: Fri, 02 Feb 2018 17:14
29 lines
2921 bytes
jmfbahciv <See....@aol.com> writes:
>hanc...@bbs.cpcn.com wrote:
>> On Wednesday, January 31, 2018 at 9:48:23 PM UTC-5, Andrew Swallow wrote:
>>> On 29/01/2018 16:53, Charlie Gibbs wrote:
>>> {snip}
>>>
>>> >
>>> > The one Hollywoodism that always bothered me is the way a telephone
>>> > reverts to a dial tone when the other end hang up.  I've never heard
>>> > this in real life, but maybe it's regional thing.  Can anyone from
>>> > New York say whether this really happens there?
>>> >
>>>
>>> That is nationwide. There is a dummy exchange that Hollywood and TV
>>> companies use. It does not matter what number you dial the equipment
>>> returns dial tone. The two actors were not talking to each other.
>>
>> Telephone sets used on movies/TV are not connected to anything.
>> Sound effects (tones, etc) are added later.
>>
>Even for movies made in the 40s, 50s and 60s?

Yes.   And Stage plays used a autotransformer to supply ring
current when they needed an on-stage phone to ring, but it
wouldn't have been connected to an "exchange".

I suspect that Andrew is referring to the special exchange number
'555' that will never be used (except for 555-1212) and is
suitable for example and hollywood use.
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Subject: Re: 1956 -- circuit reliability book
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References: <2884a417-2702-428f-89fb-d21cda9eeaed@googlegroups.com> <p4b4es$nmv$1@dont-email.me> <87607pwqnm.fsf@usenet.ankman.de> <o8CaC.652306$nS6.186263@fx23.am4> <p4fovt0cot@news1.newsguy.com> <4KzbC.489966$HZ5.382140@fx22.am4> <d687cecb-0383-477c-ac8e-4cf57061ccd1@googlegroups.com> <M8HbC.621680$QL6.132451@fx20.am4> <p4njj33o96@news4.newsguy.com> <TqOdncSdOJxr4u_HnZ2dnUU78IXNnZ2d@giganews.com> <c4977b5c-cc78-4773-a02f-c3cf5c191a35@googlegroups.com> <PM0005643B1039BB8A@aca42e3d.ipt.aol.com>
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