A Pay Phone

For years,if you were away from home and wanted to make a phone call, pay phones were your only option. Even now that most of us have phones in our pockets, pay phones aren’t going anywhere. The FCC suggests having them in certain places for the sake of public safety or welfare (such as out- side a police station, where you might need to make a call after being arrested). Pay phones manage to connect calls, set prices, and accurately collect payment using only electricity drawn from the phone line. They’re also basically bullet-proof, devised to withstand all manner of vandalism and theft.

In the 1980s, the telephone companies that owned the nation’s phone lines required that phones draw power only while in use. When the handset is removed from the cradle, the lever releases and triggers the hook switch . That allows the phone to start drawing power, giving the user a dial tone—the signal that the phone is ready to be used. During a call, the 48 volts of electricity supplied by the phone lines power all the phone’s elec- tronics, including, crucially, its master controller and LCD screen. The phone has a rechargeable NiCd battery used for only one purpose: When the handset is replaced in the cradle, the phone has to either bank the payment for the call or return coins to the caller. Each call charges the battery just enough to carry out this operation.

Yuyao Xianglong Communication Industrial Co., Ltd. was established in 2005, located in Yuyao, Ningbo, Zhejiang Province. It is mainly specialized in the production of industrial and military communication telephone handsets, cradles, keypads and related accessories. With14 years’ development, it has 6,000 square meters of production plants and 80 employees now, which has the ability from original production design, molding development, injection molding process, sheet metal punching processing, mechanical secondary processing, assembly and oversea sales. Under the help of 8 experienced R&D engineers, we could customize various non-standard handsets, keypads and cradles for customers quickly.

With our molding workshop, molding injection workshop, sheet metal punching workshop, stainless steel font etching workshop, wire processing workshop, we produce 70% components by ourselves, which guaranteed the quality and delivery time. And we have introduced button graphic analyzer, working life tester, elastic tester, salt spray tester, keypad visual scanner, pulling strength tester, military grade high and low temperature tester, drop tester, world standard electroacoustic index tester, etc, to ensure the technical requirements and standards meet the demand at home and abroad.

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Post time: Sep-11-2019
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