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IXESHA: 2023-07-05 I-HITS: 32

Joiwo's history in the field of public telephones

 

Public telephones can be seen everywhere in life, such as suburbs, highways, subways, campuses, etc. They are widely used in various fields. In the 1970s and 1980s, when cell phones were not widely available, people used pay phones. The primary means of communication and communication. 


Telephone communication is a communication technology that uses "electricity" as the medium to transmit language through the mutual conversion of sound energy and electrical energy. To communicate between two users, the simplest form is to connect two phones with a pair of lines.


1. When the speaker picks up the phone and speaks into the microphone, the vibration of the vocal cords excites the air to vibrate, forming sound waves.

2. Sound waves act on the microphone to generate current, which is called voice current.

3. The voice current is transmitted along the line to the receiver of the other party's phone.

4. The role of the receiver is just the opposite of that of the microphone - it converts the current into sound waves, which are transmitted through the air to the ear. In this way, the simplest calling process is completed.



Joiwo Explosion-proof Technology Co., Ltd. has more than 17 years of history in public telephones. Joiwo has many years of research and successfully developed a series of high-quality telephones. They are reasonably priced, simple to operate, and can adapt to many different systems. The phone has an advantage in price. For example, IJWAT205 kwayeIJWAT203 are Joiwo’s popular public telephones. As a company that has been developing for many years, our after-sales service is also very perfect.



I-JWAT205 (4)

I-JWAT205 (2)

2

I-JWAT203 (9)


 

Senza uninzi lwamalungu ngokwethu (i-handset, i-keypad, i-hanger njl.njl) Sinazo zonke iintlobo zoomatshini abenza ukubumba, ukutofa, ukuphosa, ukuphosa, i-hardware machining. .Njengomthengisi othembekileyo, sinokukubonelela ngeemveliso ezikumgangatho ophezulu kunye nenkonzo elungileyo emva kokuthengisa.

 

Ningbo Joiwo Explosionproof Science & Technology Co., LTD         

 

Yongeza: No. 695, Yangming West Road, Yangming Street, Yuyao City, Zhejiang Province,China 315400

 

Umnxeba: +86-574-58223625 / Iseli: +8613858299692

 

I-imeyile: sales02@joiwo.com

 




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