When designing and implementing a public telephone system in a subway, several technical problems should be considered to ensure reliable and efficient communication. Here are some common technical challenges specific to subway public telephone systems: 1. Signal Interference: Subways are typically located underground, which can introduce challenges related to signal interference. The presence of concrete […]
Read MoreIntroduction In the fast-paced and dynamic environment of a campus, effective communication plays a vital role in fostering a productive and safe learning environment. One powerful tool that facilitates seamless communication across the campus is the Public Address (PA) system. As a leading communication equipment manufacturer, we recognize the significance of PA systems in educational […]
Read MoreThe emergency intercom is a key component of elevators. In case of power failure, sudden stoppage of operation, or other emergencies, elevator passengers can rely on the intercom to contact the outside world, and maintenance personnel can also use the elevator intercom to realize multi-party communication between the monitoring center or the duty room, the […]
Read MoreTelephone acoustic hoods are one of the common public facilities in people’s lives, and sound insulation materials play an essential role in telephone booths. Three principles of soundproofing material mainly includes three aspects: sound absorption, reflection, and isolation. Sound absorption refers to the conversion of sound wave energy into other forms of energy for consumption. […]
Read MoreThe UK Has A World-Class Transportation Network, Both Between And Within UK Cities. With A Total Road Length Of Nearly 395,000 Kilometers, The UK Is Well Connected By Road Traffic. Freeways And A Roads Are Responsible For 65% Of Road Traffic. Concept Formation In the 1960s, it was first applied on Australia’s highways, where telephone […]
Read MoreEmergency phone tower Engineered to be a robust, completely wireless communication solution, the Advance Emergency Phone Tower is ideal for enhancing public security on college campuses,parking lots,transit stations.remote bike paths and trails,and anywhere where additional lighting and added safety and security are needed Features 1.The latest LTE certified voice 2.Weather-proof,tamper-proof steel housing protects the […]
Read MoreGraz-Karlau Prison Graz-Karlau Prison is located in Gries, the 5th district of the city of Graz, capital of the Austrian state of Styria. With a capacity of 552 inmates, Graz-Karlau is the third-largest prison in Austria. Women’s Prison Schwarzau Schwarzau Prison is the only criminal institution in Austria responsible for the execution of judicial custodial […]
Read MoreJ&R technology will participate in the Xinjiang Petroleum Equipment Exhibition from July 18 to 20, 2023, Beijing time. The oil and gas industry is not only an important pillar of Xinjiang’s industry, but also plays an irreplacable role in ensuring national energy security and serving the construction of the “Belt and Road”. With the in-depth […]
Read MoreWaterproof telephone belongs to the special telephone category of fixed-line telephone. According to the use environment and strength, it can be divided into two categories: consumer waterproof telephone and industrial waterproof telephone. The JR100 series telephones are fully contained within a corrosion-resistant cast aluminum weatherproof case with a door providing complete protection against dust and […]
Read MoreWhat role does the underground gallery play in the city? A comprehensive pipeline gallery is a tunnel space built underground in the city, and various engineering pipelines such as power, communication, gas, heating, water supply, and drainage are integrated into one. It is a modern, scientific and intensive urban infrastructure, which can effectively solve the […]
Read More1. The application of the explosion-proof phone The explosion-proof telephone was originally developed for coal mines and other inflammable and explosive places, generally used in factories and mining enterprises of the second type of places. The explosion-proof telephone adopts a protective element and safety barrier to ensure the reliability of safety spark performance. Its ring […]
Read MoreWhat is an American Summer camp? Summer camp originated in the United States in 1861, the original purpose is to let modern city children away from big cities and return to nature, and outdoor life through a variety of activities and exercises, to become tough, brave, and correct behavior. As time goes by, the content […]
Read MoreRecently, the 48th Geneva International Exhibition of Inventions closed in Geneva, Switzerland, and announced the list of winners. Founded in 1973, the Geneva International Exhibition of Inventions is an annual large-scale international exhibition organized by the Swiss Federal Government, the Canton of Geneva, the City of Geneva, and the World Intellectual Property Organization. It is […]
Read MoreIn the course of the whole social progress, prison as an important part of the judicial system is gradually modernizing. The phone is a very important device in prison, playing a very important role in family communication and social help and education, to promote prisoners’ stability and peace of mind reform. Based on the special […]
Read MoreThe typical application of clean room is manufacturing or scientific research, which requires low content of environmental pollutants, such as dust, air microorganisms, float and sink, chemical pollutants, etc. More precisely, clean rooms control contaminants down to the amount of impurities per cubic meter. For continuous monitoring and control of the environment, high precision measuring […]
Read MoreSpring doesn’t skimp on those of us who stick it out in winter. Between the present and the future, there is beating and innovation. Looking forward to a new journey, the dawn is glowing on the horizon. Every brave man of us believes that after a fog dispersed we still have passion on our life […]
Read MoreQuanzhou Wharf Telephone Commissioning This weatherproof telephone is very popular for Tunnels, Mining, Marine, Underground, Metro stations, Railway platform, Highway side, Hotels, Parking lots, Steel Plants, Chemical plants, Power plants, and related heavy duty industrial application, etc. Extremely easy to install. The cable entrance is on the back of the phone to prevent from artificial damage, while […]
Read MoreJ&R Technology Co., Ltd waterproof telephone JR101-FK has been installed in French Park and is now in use. The park provides a place for leisure and entertainment for the surrounding residents and tourists, strengthening the supervision and safety management of the park is an important task for the park managers. In this project, our waterproof telephone was […]
Read MoreOutdoor Roadside SOS call box The Hands Free Telephone is designed to meet the needs of clients who experience loss through vandalism. Ideal for Highways, parking lots, Roadside, railway/metro platforms, hospitals, police stations, outside buildings, etc. Housed in a cold rolled steel box and manufactured to a high standard, these telephones offer increased resistance to vandalism, […]
Read MoreBest Telephone Manufacturer J&R Technology supplies reliable telephone solutions to customers all over the world. Our production includes standard and custom telephones such as weatherproof telephones, vandal resistant telephones, explosion resistant telephones, and telephone accessories. Our telephones are used in various industries including oil&gas, maritime, industrial, transportation, etc. The phones can be installed at airports, […]
Read MoreJ&R Technology is the leading manufacturer and designer of telephone solutions for customers around the world. Our production includes telephone sets, and their peripherals and core components.
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