What Is the Public Switched Telephone Network and How Does It Work
公共の切換電話ネットワーク(PSTN)は、回路の切換えによってグローバルコールを接続し、信頼性を確保します。 駅の公衆電話サービスはアクセシビリティを高めます.
about us
joiwo-technology
Ningbo Joiwo is mainly dedicated to internal emergency dedicated communication systems for subway high-speed rail, highway tunnels, petrochemicals, metallurgical nuclear power, offshore engineering, jail ,hoespital，bridges and mines, etc .PAGA broadcast dispatch, scenic area, airport tourist help management scheme, municipal SOS , 110,119 alarm system; special industrial VoIP telephone, Explosionproof telephone，SOS telephone, network management, R & D, production and sales of SIP dispatching system. We manufacture most of the parts of the telephones by ourselves and it gives us much advantage over the cost and quality control. Our Jail phones have also gained good reputation from our customers in USA, Europe and Middle East.
products
The company has not yet released any products.
ニュース
How Our ATEX Phones Prevented a Petrochemical Plant Disaster
2025-03-31Discover how ATEX Explosion Proof Telephones ensured safe communication, preventing a petrochemical plant disaster by mitigating ignition risks.
険しい産業電話ハンドルのSandtormsできますか。 お問い合わせ!
2025-03-29険しい産業 電話は砂嵐、抵抗の塵、熱および影響に耐えるために造られます。 厳密なテストによって、それらは信頼できる性能を保障します.
鉱山のための最高の防爆電話を比較する
2025-03-292025年のトップマイニング防爆電話モデルを比較します。 危険な環境での信頼性の高い通信を確保するため、安全、耐久性、および接続機能をご覧ください.
トップ10 2025のための防水およびちり止めのクリーンルームのIntercomの電話
2025-03-272025年のトップ10防水および防塵クリーンルームインターホンをご覧ください。 滅菌環境での衛生、耐久性、シームレスな通信を確保します.
耐候性電話による過酷な環境でのコミュニケーションの課題解決
2025-03-26エンジニアのプラスチック産業耐候性がある 電話は、水害、ほこり、静的などの問題の解決、極端な条件で信頼性の高い通信を保証します.
2025年の防水産業電話を選ぶための包括的なガイド
2025-03-26業界最高の防水工業用電話を見つけてください。 過酷な条件での信頼性の高い通信を確保するためのIP評価、耐久性、および機能について学びます.
ハーシュ気象条件から屋外電話を保護する方法
2025-03-25耐久性および信頼できる性能を保障するために防水包装、絶縁されたエンクロージャおよび規則的な維持との粗い天候からの屋外の電話を保護して下さい.
産業労働者のための頑丈なIP67電話の比較
2025-03-242025年に産業使用のための上のIP67耐候性がある電話を比較して下さい。 過酷な環境のために高度な機能を備えた耐久性、耐水性オプションをご覧ください.
防水トンネルの電話のための5つの本質的な維持の先端
2025-03-22厳しい条件の信頼性を保障するために規則的なクリーニング、シールの点検、反腐食の処置および点検の防水トンネルの電話を維持して下さい.
正しい産業頑丈な電話を選ぶための包括的なガイド
2025-03-21最高の産業を選んで下さい 耐久性、安全性、コネクティビティを評価し、厳しい環境での信頼性の高い通信を確保することにより、お客様のビジネスのためのヘビーデューティ電話.
あなたの業界に最適な防爆電話を選ぶための必需品のヒント
2025-03-21安全な産業コミュニケーションのためのATEX、IECExの証明、耐久性および騒音処理の特徴が付いている最もよい緊急の防爆電話を選んで下さい.
A Review of Leading Apartment Elevator Phone Brands
2025-03-20Compare top apartment elevator telephone brands for 2025, including Ningbo Joiwo, Savaria, and KONE. Discover options for safety, cost, and compliance.
What Are Offshore Weatherproof Telephones Used For
2025-03-20Offshore weatherproof telephones ensure reliable communication in harsh environments like oil rigs, featuring durability, noise-canceling, and corrosion resistance.
Water Submersion Tested: IP68 Marine Phones for Floating Prisons & Offshore Platforms
2025-03-19IP68-certified marine industrial telephones offer durability, water resistance, and advanced features, ensuring reliable communication in extreme marine environments.
How Stainless Steel Wall Mounted Telephones Are Designed for Security
2025-03-19Stainless steel wall-mounted telephones offer tamper-proof, weather-resistant designs with advanced security features, ideal for prisons and public spaces.
Leading Suppliers of Shipping Industry Telephones
2025-03-18Explore top suppliers of shipping industry telephones in 2025. Learn about durability, compliance, and advanced features for reliable maritime communication.
Why Weatherproof Telephones Are Vital for Outdoor Safety
2025-03-18Cold and waterproof outdoor telephones ensure reliable communication in harsh conditions, vital for industrial safety and emergency response.
2025 Guide to Installing and Maintaining Prison Telephones
2025-03-17Securely install and maintain wall-mounted prison telephones with tamper-proof features, ADA compliance, and routine inspections for long-term reliability.
ATEX-Certified Marine Telephones: Explosion-Proof Solutions for Hazardous Chemical Zones
2025-03-17ATEX-certified Marine Telephones ensure safe, explosion-proof communication in hazardous chemical zones, offering durability and reliability in volatile environments.
Comparing Features of Marine Industrial Telephones in 2025
2025-03-14Compare top marine industrial telephone brands for 2025. Explore durability, weatherproofing, noise cancellation, and pricing to find the best fit for your needs.
Top Features to Look for in a Weatherproof Industrial Telephone
2025-03-14Choose the best rainproof weatherproof telephone with features like high IP ratings, durable materials, and noise-canceling tech for industrial reliability.
Why Coastal Hospitals Choose Marine-Grade Emergency Phones for Flood-Prone Areas
2025-03-13Coastal hospitals use marine industrial telephones for reliable communication in flood-prone areas. Their waterproof, corrosion-resistant design ensures safety.
From Ship Decks to Subsea Tunnels: 5 Critical Features of Marine-Grade Emergency Phones
2025-03-13Discover 5 critical features of Marine Industrial Telephones, designed for durability, weatherproofing, and reliable communication in extreme marine conditions.
5 Easy Steps to Install Explosion Proof Telephones
2025-03-12Follow 5 simple steps to install and maintain an Explosion Proof Telephone in hazardous areas, ensuring safety, compliance, and reliable communication.
Guide to Choosing the Best Mining Industrial Telephone
2025-03-12Choose the best mining industrial telephone with explosion-proof design, ATEX/IECEx certifications, and durability for safety in hazardous environments.
Top Explosion-Proof Telephones for Emergency Use in 2025
2025-03-11Compare the top emergency Explosion Proof Telephone models for 2025. Discover their safety, durability, and connectivity features for hazardous environments.
How Analog Voip Industrial Water-Resistant Telephone Solves Mining Communication Issues
2025-03-11The Analog VoIP Industrial Water-Resistant Telephone ensures reliable communication in mining with its IP67 aluminum body, noise-canceling mic, and loud ringer.
Durable Design: How Explosion Proof Phones Withstand Extreme Environments
2025-03-10Explosion proof phones ensure safety in hazardous environments with rugged designs, preventing ignition of flammable gases or dust while offering reliable communication.
How to Choose the Best Traffic Emergency Telephone for Remote Roadways
2025-03-10Choose the best traffic emergency telephone for remote roadways by considering durability, power options like solar, and reliable connectivity for emergencies.
Why Traffic Emergency Telephones Are Critical for Tunnel and Bridge Safety Systems
2025-03-07Traffic Emergency Telephones ensure reliable communication in tunnels and on bridges, providing a lifeline during emergencies when cell signals are unavailable.
Essential Tips for Choosing a Rugged Emergency Telephone
2025-03-07Choose the best rugged emergency telephone with features like durability, weather resistance, and user-friendliness for reliable communication in harsh environments.
Top Hands-Free Elevator Telephones Compared for 2025
2025-03-06Compare the top handsfree elevator telephones of 2025. Discover features, compliance, and cost insights to choose the best model for your building's needs.
Top Wall Mounted Prison Telephones Compared for 2025
2025-03-06Compare the best wall mounted prison telephones for 2025. Explore durable, secure, and cost-effective options with tamper-resistant and weatherproof designs.
How to Choose the Right Heavy-Duty Telephone for Your Workplace
2025-03-05Find the best heavy-duty telephone for your workplace by considering durability, features like noise cancellation, compatibility, and long-term value.
Why Waterproof Industrial Telephones Matter Most Today
2025-03-05Waterproof industrial telephones ensure reliable communication in harsh environments by resisting water, dust, and physical stress, enhancing safety and efficiency.
Why Explosion-Proof Telephones Are Critical for Mining Safety
2025-03-04A mining Explosion Proof Telephone ensures safety by preventing ignition risks, enabling reliable communication, and meeting strict safety standards in hazardous industries.
Industrial Telephones for Emergency Communication: Saving Lives in Critical Situations
2025-03-04Industrial telephones ensure reliable communication in emergencies, offering durability, weatherproofing, and safety features for critical situations.
Waterproofing Tips for Industrial Telephones: Ensuring Reliable Performance
2025-03-03Ensure reliable performance of industrial telephones with waterproofing tips, including sealed ports, IP ratings, and maintenance for harsh environments.
Common Issues with Industrial Telephones and How to Fix Them
2025-03-03Facing issues with industrial telephones? Learn how to fix no dial tone, poor audio, connectivity problems, and environmental damage with practical solutions.
Why IP Explosion Proof Telephone Matters for Safety
2025-02-28IP Explosion Proof Telephones ensure safety in hazardous environments by preventing ignition, enabling reliable communication, and withstanding extreme conditions.
From Cargo Ships to Cruise Liners: Versatile Uses of Marine Telephones
2025-02-28Marine telephones ensure reliable communication, safety, and efficiency on cargo ships and cruise liners, adapting to harsh conditions and unique maritime needs.
Wall Mounted Telephone Through the Ages
2025-02-27Wall-mounted telephones evolved from crank models to modern digital designs, blending space-saving practicality with technological innovation over decades.
How Industrial Telephones Enhance Safety in Chemical Processing Plants
2025-02-27Industrial telephones ensure safety in chemical plants with explosion-proof designs, real-time communication, and durability for hazardous environments.
Why Marine Industrial Telephones Are Essential for Offshore Oil Rigs
2025-02-26Marine industrial telephones ensure safety, reliable communication, and efficiency on offshore oil rigs, with features like durability and emergency readiness.
Why Industrial Telephones Are Essential for Oil and Gas Facilities
2025-02-26Industrial telephones ensure safety and efficiency in oil and gas facilities by providing reliable, explosion-proof communication in harsh and remote environments.
VoIPテクノロジーが産業通信システムに革命を起こす方法
2025-02-25インダストリアル VoIPの電話システムはコミュニケーションを高め、安全を改善し、そして高度の特徴の産業環境のコストを削減します.
How to Choose the Best Industrial Telephone for Your Facility
2025-02-25Choose the best industrial telephone for your facility by considering durability, compatibility, and advanced features like VoIP for safety and efficiency.
How to Choose the Best Marine Industrial Telephone for Offshore Platforms
2025-02-24Choose the best marine industrial telephone for offshore platforms by evaluating durability, safety certifications, noise cancellation, and cost-effectiveness.
Why Every Hazardous Environment Needs an Emergency Explosion Proof Telephone
2025-02-24Emergency explosion-proof telephones ensure safe, reliable communication in hazardous environments, preventing accidents and enabling quick emergency responses.
How to Maintain Industrial Telephones for Longevity in Harsh Environments
2025-02-21Maintain your industrial telephone with regular cleaning, inspections, and protective measures to ensure reliability and longevity in harsh environments.
Explosion-Proof vs. Weatherproof Industrial Telephones: Which is Right for You
2025-02-21Compare explosion-proof and weatherproof industrial telephones to find the best fit for your environment. Ensure safety and durability with the right choice.
Marine Telephones for Emergency Communication: Saving Lives at Sea
2025-02-20Marine telephones are essential for emergency communication at sea, offering reliable contact with rescue services and ensuring safety in critical situations.
Explosion-Proof Marine Telephones: Ensuring Safety in Hazardous Zones
2025-02-20Explosion-Proof Marine Telephones ensure safety in hazardous zones with features like flameproof enclosures, ATEX compliance, and durability in harsh conditions.
Common Issues with Marine Industrial Telephones and How to Fix Them
2025-02-19Discover solutions to common issues with marine industrial telephones, including poor audio, power failures, and connectivity problems, to ensure reliable communication.
Explosion-Proof vs. Weatherproof Marine Telephones: Which is Right for Your Needs
2025-02-19Compare explosion-proof and weatherproof marine telephones to find the best fit for your needs. Ensure safety in hazardous zones or durability in harsh weather.
Global Standards for Emergency Explosion Proof Telephones: What You Must Know
2025-02-18Understand global standards like ATEX, IECEx, and UL for emergency explosion proof telephones to ensure safety, compliance, and reliable communication in hazardous areas.
How to Choose the Right Marine Industrial Telephone for Your Vessel
2025-02-18Choose the right marine industrial telephone for your vessel by considering durability, compatibility, and features to ensure reliable communication at sea.
Essential Tips for Using Emergency Telephones Effectively
2025-02-17Learn how to use an emergency telephone effectively during critical situations. Stay calm, communicate clearly, and follow operator instructions for quick help.
Emergency Explosion Proof Phones in Pharma Labs: Compliance and Best Practices
2025-02-17Ensure safety in pharma labs with explosion proof telephones. Learn about compliance standards, key features, and best practices for hazardous environments.
Cost vs. Safety: Why Investing in Explosion Proof Telephones is Non-Negotiable
2025-02-14Explosion Proof Telephones ensure safety, compliance, and cost savings in hazardous industries by preventing accidents and meeting regulatory standards.
How Emergency Explosion Proof Telephones Enhance Safety in Oil & Gas Facilities
2025-02-14Emergency Explosion Proof Telephones ensure safe, reliable communication in hazardous oil and gas facilities, preventing ignition risks and enhancing safety.
How to Install and Maintain an Emergency Explosion Proof Telephone System
2025-02-13Learn how to install and maintain an explosion-proof telephone system to ensure safety, compliance, and reliable communication in hazardous environments.
Emergency Explosion Proof Telephones: A Lifeline in Chemical Processing Plants
2025-02-13Emergency explosion proof telephones ensure reliable communication in hazardous zones, protecting lives and meeting safety standards in chemical processing plants.
How Metal Analog VoIP Telephone Overcomes Communication Barriers in Tough Environments
2025-02-12Metal Analog VoIP telephones ensure reliable communication in tough environments with rugged design, noise-canceling features, and line-powered operation.
The Role of Emergency Explosion Proof Telephones in Industrial Fire Safety Systems
2025-02-12Emergency Explosion Proof Telephones ensure safe, reliable communication in hazardous areas, preventing ignition risks and integrating with fire safety systems.
Top heavy-duty telephones for railway tunnels in 2025
2025-02-12Compare the best heavy-duty telephones for railway tunnels in 2025. Discover models like KNSP-01, Doogee S100 Pro, and Nokia XR20 for durability and safety.
Top Advancements in Weatherproof Telephone Technology for 2025
2025-02-11Discover 2025's top advancements in rainproof weatherproof telephones, from AI integration to solar power, ensuring reliable communication in extreme conditions.
How Industrial IP Weatherproof Telephones Enhance Tunnel Safety
2025-02-10Industrial IP Weatherproof Telephones ensure reliable communication in tunnels, overcoming noise, humidity, and signal issues to enhance safety and efficiency.
How to Use Emergency Telephone Systems Effectively
2025-02-10Master the use of emergency telephone systems in homes, workplaces, and public spaces. Ensure clear communication and quick response during critical situations.
Guide to Choosing the Best Plastic Industrial Weatherproof Telephone
2025-02-08Choose the best Plastic Industrial Weatherproof Telephone with features like IP67 protection, noise cancellation, and durability for harsh environments.
Why Explosion-Proof Telephones Are Crucial for Hazardous Workplaces
2025-02-08Explosion proof telephones ensure safe communication in hazardous workplaces by preventing ignition risks and meeting strict safety standards for volatile areas.
Top 5 Security Challenges Solved by Hotline Automatic Dial Vandal Proof Public Telephones
2025-01-20Hotline Automatic Dial Vandal Proof Public Telephones tackle vandalism, unauthorized use, and harsh conditions with durable, secure, and weatherproof designs.
Top 3 Rugged Wall Mounted Inmate Telephones Compared
2025-01-20Compare the top 3 rugged wall-mounted inmate telephones with volume control buttons. Discover their durability, usability, and best use cases for correctional facilities.
Top 10 Rugged Industrial Telephones for Harsh Environments
2025-01-17Discover the top 10 rugged industrial telephones designed for extreme environments. Learn about their durability, features, and suitability for harsh conditions.
How Industrial Explosionproof Heavy Duty Telephones Improve Workplace Safety in 2025
2025-01-17Industrial explosionproof heavy duty telephones ensure safe, reliable communication in hazardous workplaces, reducing risks and improving emergency response.
Top Offshore Waterproof Telephone Options Compared
2025-01-16Compare top offshore waterproof telephones for industrial use. Discover models with IP68 ratings, rugged designs, and advanced features for harsh environments.
How Joiwo IP Office Telephone Boosts Workplace Communication
2025-01-16Discover how the Joiwo IP Office Telephone enhances workplace communication with HD voice, SIP line support, and PoE for seamless collaboration and efficiency.
How Weatherproof Telephones Enhance Communication in Harsh Conditions
2025-01-15Weatherproof telephones ensure reliable communication in harsh conditions with features like waterproofing, durability, and noise-canceling technology.
Top Explosion Proof Telephones for Safer Industries
2025-01-15Discover the top explosion proof telephones for 2025, designed to ensure safety and reliability in hazardous industries with advanced features and certifications.
Why Emergency Voice Communication Systems Are Crucial for Fire Safety
2025-01-14Emergency Voice Communication Systems Fire Telephone ensure clear, two-way communication during crises, aiding evacuation and enhancing fire safety compliance.
Top Tips for Maintaining Industrial Telephones in Harsh Conditions
2025-01-14Maintain industrial telephones in harsh conditions with tips on cleaning, inspections, sealing, and protective enclosures to ensure reliability and durability.
How Explosionproof Telephones Enhance Communication in Hazardous Workplaces in 2025
2025-01-13Explosionproof telephone Wall Mounted HandsFree Emergency Intercom ensures safe, clear communication in hazardous workplaces, enhancing safety and efficiency.
How Elevator Telephones Work and Keep Passengers Safe
2025-01-13Elevator telephones ensure passenger safety by providing hands-free, 24/7 communication with monitoring centers, even during power outages or emergencies.
What Are Industrial Heavy Duty Telephones in 2025
2025-01-10Industrial heavy-duty telephones in 2025 ensure reliable communication in harsh environments like oil rigs, mines, and factories with advanced safety features.
What is an Explosion Proof Telephone and Why is it Essential?
2025-01-10An explosion proof telephone ensures safe communication in hazardous areas by preventing sparks and ignition, making it vital for safety and compliance.
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2018年12月20日 お問い合わせ Deepvaluer の使い方.
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