manual switchboard造句
例句與造句
- In 1943 when military calls had priority, a cross-country US call might take as long as 2 hours to request and schedule in cities that used manual switchboards for toll calls.
- It also had an employee named Edna Nunn, who, despite being restricted to a wheelchair by childhood polio, operated the company's manual switchboard, collected all its bills and handled customer complaints.
- Various schemes were used to convert these to dialable numbers as dial replaced manual switchboards; many moderately-large cities used a 2L + 4N format where " ADelaide 1234 " would be dialled as AD-1234 ( 23-1234, a six-digit local call ).
- Some tiny place used to be a separate village or used to have a small manual switchboard, but was swallowed by urban or suburban sprawl years ago yet the rate center ( and a restrictive local calling area ) still exists.
- Despite such wealth, Bailey spent most of his adult years living in the back rooms of the various offices of the Camden Telephone Co ., which his father purchased in 1927 when it was nothing more than a manual switchboard operation at the River View Hotel.
- It's difficult to find manual switchboard in a sentence. 用manual switchboard造句挺難的
- Rural party line numbers in manual exchanges were prone to awkward, non-standard numbering schemes like " line 10, two long rings and one short " which were gradually eliminated as the number of parties on a single line was reduced and the manual switchboard replaced by automatic dial equipment.
- High quality Royal Navy-issue binoculars were issued to observers, whose observation posts often consisted of nothing more than a wooden garden shed located next to a telegraph pole, this arrangement enabling a telecommunications link to be established with a control centre, often via a manual switchboard at local telephone exchange.
- Early manual switchboards required the operator to operate listening keys and ringing keys, but by the late 1910s and 1920s, advances in switchboard technology led to features which allowed the call to be automatically answered immediately as the operator inserted the answering cord, and ringing would automatically begin as soon as the operator inserted the ringing cord into the called party s jack.
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