Best Voice Calling API & SDK Providers in China

Use the language you already love to prototype ideas quickly, develop production-ready communications applications, and run serverless applications on one API-powered platform. Twilio is a single fully-programmable platform with flexible APIs for any channel, built-in intelligence, and global infrastructure to support you at scale. Quickly integrate powerful APIs to start building solutions for SMS and WhatsApp messaging, voice, video, and email. Browse documentation and SDKs in multiple coding languages, including Ruby, Python, PHP, Node.js, java, and C#, or jumpstart your first project with our open source code templates to quickly build production-ready communications apps. Consult our community of over 9 million developers for guidance and inspiration on your next project. Sign up and start building today.

Why struggle with large providers like Twilio, where response times to support requests can feel endless? At Signalmash, we’re more than just another CPaaS provider. Our commitment is to deliver top-tier CPaaS support. With us, your developers gain access to shared Slack channels with our team for quick assistance, and you’re always welcome to reach out directly to our CEO. Our real-time, high-quality support means faster development and empowers you to offer outstanding service to your customers. Our SMS services include: - SMS API - SMS CPaaS - SMS UCaaS - SMS no-code sending platform - 10DLC campaign support - Short code SMS - Toll-free SMS Voice services available: - Contact center telecoms - Voice termination - Voice origination - Local numbers - Short code numbers - Toll-free numbers - SIP Trunking Our No-code telecoms solutions: - UCaaS for SMS - CCaaS for call management - AI-driven solutions Signalmash – get unmatched support every step of the way. Schedule a call with us today for expert guidance!

ClickSend offers SMS, MMS, Voice, Online Mail, Email and Fax software for businesses. Our communications and messaging tools are simple to use, automate and integrate. That’s why they’re used by some of the most trusted brands, organisations and developers globally. Built for all, you can access ClickSend via our Dashboard, mobile app, flexible API or 900+ integrations. Plus, ClickSend offers helpful 24/7 support, and lightning fast delivery via a secure and reliable platform. From SMS marketing and alerts to bulk mailouts sent from your browser, join over 90,000+ businesses sending communications around the world. Our 100% uptime guarantee and lightning fast direct routes provide reliable messaging, no matter the channel. From small businesses to enterprise, ClickSend powers billions of messages around the world with 232+ direct carrier connections. Plus, ClickSend is always pay-as-you-go. That’s why ClickSend is business communications, solved.

MirrorFly is a custom CPaaS provider powering businesses and enterprises with real-time communication, such as instant messaging, voice calls, and video conferencing through Chat APIs and SDKs. Regardless of the use case, tech stack, and devices, MirrorFly supports brands across the world to build their own chat platform with complete customization and zero limitations. MirrorFly’s Key CPaaS Benefits: ✅ Host on Your Own Server ✅Unlimited Customization ✅ Complete Data in Your Hand ✅ 1000+ Features ✅ Custom Security (Gmail, Phone, BioMetric, etc) ✅ Upload Enlarged Files (3+ GB) ✅ Mulit-tenant Server ✅ Scale 1+ Billion Concurrent Users ✅ Free Migration & Integration ✅ Hire Your Own Dedicated Team

Discover how the Telnyx API is a developer-friendly tool that can transform your business communications. Telnyx is a communication platform that can be customized to meet your specific needs. Our network was designed with real-time communication in mind. We can deliver high quality calls, messaging, data, and data all over the globe. Our SMS API makes it easy to create reliable messaging. Two-factor authentication via SMS or voice codes is a great way to protect your data. You can plug and play your VoIP setup within minutes. Get carrier-grade voice and elastic SIP trunks. You can rest assured knowing that you are protected in the event of a network outage thanks to our cloud-agnostic approach. Telnyx enables communications to be deployed exactly according to specifications.

Connect with your customers like never before across all channels. With CPaaS and APIs for SMS, Voice, Video, and Verification, you can reach any mobile device globally in mere seconds. By effectively engaging your customers, you can significantly increase webshop orders, a fact proven by our collaboration with a leading telecommunications company that utilized a user-friendly online chatbot. Additionally, we assisted a prominent automotive firm in re-engaging potential buyers who had not responded to emails, leading to impressive results from their tailored Rich SMS campaign. Are your clients missing important appointments? Implementing engaging SMS reminders not only benefits them but also enhances your revenue streams. Trusted by developers worldwide, our solutions allow you to build with assurance and elevate your business using just a few lines of code. Strengthen your connection with customers and enhance their journey at every touchpoint, ultimately driving greater satisfaction and loyalty. Embrace this opportunity to transform your customer interactions and watch your business thrive.

Plivo Communications Platform is a Cloud API Platform as well as a Global Carrier Services Provider. It offers high-quality cloud communications at an affordable price. Plivo Communications Platform allows users to make phone and SMS calls to all countries. It also allows them to buy local numbers in 55 countries. Plivo Communications Platform offers free tech support that is available 24/7. Experts are happy to help customers with any issues.

Welcome to TENIOS, the cloud communications provider of the Apifonica Group. TENIOS is German-based and specializes in cutting-edge AI voicebots and telephony solutions for businesses. Their mission in short words: Bringing Conversational AI to the world. Their passion for automation unites a team of experts in Cloud Technology, Telephony, and AI to help businesses automate communication and related business workflows. TENIOS Voicebots handle outbound and inbound calls, call back leads, pre-qualifiy them, instantly update CRM data, and create reports to scale customer communications. The comprehensive telecom-platform offers services such as virtual phone numbers, intelligent call routing, interactive voice response (IVR) systems, SMS, RCS, and a robust Voice API for seamless integration of voice applications. With over two decades of experience and hosting in Germany, TENIOS ensures reliable and scalable communication solutions tailored to meet diverse business needs.

AVOXI Genius is a cloud-based, cost-effective, and simple-to-use call center software. You can easily manage your business communications using a web-based contact centre. AVOXI Genius integrates your contact center solution with voice service. Virtual phone numbers are available for activation in 170+ countries. AVOXI Genius is the best-selling solution in the world, with plans starting at $19.99 per person. Enjoy 2 months of free service for a limited time.

Bird, previously known as MessageBird, stands as a cutting-edge CRM tailored for Marketing, Sales, and Payments, facilitating over 5 trillion messages annually through platforms like Email, SMS, and WhatsApp. Notable brands enhance their growth efficiently with Bird by engaging in personalized communication via these channels. Innovative enterprises across the globe leverage Bird's diverse applications and APIs to craft effective communication solutions. Begin your journey today and engage with your customers across any channel, addressing a wide array of use cases globally. Whether it's marketing communications, push notifications, or updates on orders and deliveries, Bird has you covered. Are operational hurdles hindering your expansion? Streamline your processes with automated conversations and workflows that gather essential information early, minimize manual efforts, establish self-service options, and direct chats to the appropriate representative. You can quickly set up and start utilizing our dependable, auto-scaling APIs, supported by comprehensive documentation, detailed API references, and user-friendly SDKs, enabling seamless integration into your existing systems.

CometChat is a live chat platform that allows users to collaborate and connect with customers. Developed with API and Chat SDK, CometChat can be deployed on-premise and cloud. The solution enables users to video, text and voice chat with the customers, share pictures via broadcast videos, play games and use whiteboards. Primary features of CometChat include WebRTC, file sharing, screen sharing, real-time language translation, customization for layouts, languages and colors, typing indicators, last-seen notifications, read receipts, emojis and stickers. The platform also allows users to switch from text chatting to a video chatting interface. Additional services of CometChat include broadcast messages, guest login support, earlier messages, blocking or unblocking users, video broadcasting and voice notes. Pricing of the product is based on monthly active users and support is extended via email and phone.

Create a scalable voice experience with the API that connects millions globally. With Twilio Voice, you can build unique phone call experiences with one API, to create, receive, control and monitor calls with just a few lines of code. Customize your experience the way you want by using a wide range of customization resources, such as our Voice SDK, speech recognition, Interactive Voice Response (IVR), and recording transcriptions. Whether you're looking to set up global conferencing or alerts & notifications, Twilio has the support you need for building with Voice, such as our Twilio Runtime and Studio developer tools. Find docs, code samples, and helper libraries to start building today.

Authkey.io stands as an exceptional Enterprise Omni Channel API platform, offering an extensive suite of communication tools and APIs meticulously designed to empower businesses in their quest for efficient and secure customer engagement. SMS API:A seamless communication symphony with its event-based messaging prowess. This facet encompasses the seamless orchestration of Bulk SMS delivery, transactional messages, one-time passwords (OTP), and the authentication process through call-based interfaces. Voice API: This dynamic capability ensures the delivery of OTPs through vocal messages, providing an alternative avenue that ensures the recipient's prompt access. Email API: Reliable and rapid delivery of emails, serving critical functions such as password verification, account creation, OTP distribution, and email validation. WhatsApp Business API: The contemporary business landscape requires a direct conduit to reach the massive audience on the WhatsApp API facilitate this engagement, enabling businesses to establish a direct line of communication with their audience. Two-Factor Authentication (2FA) API: Seamlessly dispatching OTPs, verifying logins, and bolstering the security architecture of business software, CRM systems.

Dyte's Video SDK and APIs are SOC 2, GDPR, and HIPAA compliant. Embed scalable, customisable and secure video call into your web or mobile app with just few lines of code. It is compatible with Android, iOS, React Native, Angular and many more languages. With an uptime of 99.99%, industry-leading documentation, UI kit and out of the box plugins, customize the video experience within minutes.

You don't have to spend months creating in-app messaging feeds and messaging. Instead, you can implement them in as little as a matter of weeks using Stream's activity feeds or in-app chat APIs. Stream's flexible UI kits, reliable APIs, and developer-friendly SDKs allow product teams to quickly integrate polished communication functionality found on social media platforms like Instagram, Facebook Messenger, or WhatsApp. Stream's APIs have an industry-leading 99.999% uptime guarantee, more than a billion users, and 5,000,000 concurrent connections. This makes them highly scalable and ideal for both enterprise-grade businesses as well as growing startups. Easy-to-use software components make it easier to ship fully-featured activity feeds, in-app chat functionality, and other features faster. This gives your product an edge.

Streamline the development of your video calling application by saving valuable time on UI and feature implementation. By using only five lines of code, you can seamlessly integrate video calling into your project. Simply generate an API Key to create a secure connection between your application and Video SDK. This setup ensures a robust end-to-end encrypted link between your app and our servers. By incorporating straightforward JavaScript code into your website, you'll find it easy to build an interactive video calling solution. With just a few lines of code, you can create an engaging video calling app tailored to your needs. Additionally, the Analytics Dashboard provides insights to track service usage and allows for manual operational control. Everything you need is included to create custom and branded live shopping experiences tailored for eCommerce brands of any size. Furthermore, all the necessary tools are available to develop secure telemedicine communication APIs and SDKs, ensuring safety and compliance at any scale. This comprehensive approach empowers you to innovate and expand your digital offerings efficiently.

Enhance your applications by integrating captivating real-time voice, video, and in-app chat functionalities through ZEGOCLOUD's communication APIs. With just four lines of code, you can kickstart the process and unlock a wealth of interactive features. Utilize our comprehensive voice, video, and in-app chat SDKs to tailor the communication capabilities your users desire, allowing them to connect, share, and engage with one another at any time and from anywhere. Elevate the user experience with a diverse range of add-ons such as emotionally intelligent avatars, AI-enhanced video effects, interactive whiteboards, and much more. Ensure seamless communication quality in real-time while also gaining valuable insights into user interactions through our advanced monitoring and analytics tools, empowering you to swiftly address any challenges and perpetually enhance your offerings. ZEGOCLOUD's innovative social solutions enable you to create personalized one-on-one and group video calls, lively audio rooms, and dynamic social live streaming, fostering connections and enjoyable experiences for your users. By leveraging these tools, you can cultivate a vibrant community where users can forge lasting relationships and share memorable moments together.

With over 700 direct carrier connections and 60+ offices on 6 continents, Infobip is a global leader in omnichannel communication. We make it our business to simplify how brands connect with, engage and delight their customers at global scale. Our programmable communications platform delivers a suite of tools for advanced customer engagement and support, plus security and authentication. We make this available to you across the widest range of communication channels possible. THE INFOBIP ADVANTAGE (1) Personalized omnichannel customer connections Achieve deeper customer engagement across the widest selection of local and global channels, including: SMS, RCS, WhatsApp, voice, video, email and the most popular chat apps. (2) Global reach, local presence Our 60+ offices around the world allow us to react faster. We provide 24/7 customer support, technical solutions in-line with needs and local requirements — based on proven best practices. (3) Full stack customer engagement Deliver better outcomes for your business by enhancing your communications with fully integrated contact center, marketing automation, and chatbot building solutions informed by our customer data platform.

Mesibo serves as a robust real-time communication platform that enables the seamless integration of messaging, group chats, voice calls, and video conferencing into both mobile and web applications. When developing the Mesibo APIs, our primary focus was on ensuring reliability, performance, and scalability, as we recognized that overly complex APIs can lead to unnecessary complications and increased error rates in applications. Rather than following the trend of convoluted API designs, we have prioritized simplicity while maintaining powerful capabilities. In this section, we will delve into the intricacies of Mesibo's real-time APIs. It is advisable to check out the source code of one of the sample applications available on GitHub to gain insights into how these APIs are effectively utilized. This approach will facilitate your ability to write cross-platform code seamlessly. In the subsequent sections, we will outline the APIs along with their respective names and parameters, providing you with a comprehensive understanding of their functionality. Additionally, this will empower you to implement the APIs more effectively in your projects.

Provide prompt and tailored communication through international SMS/RCS and voice cloud services. Enhance your customer insights with actionable intelligence derived from global phone numbers and subscriber data. Utilize TeleSign’s Messaging API to code once and effectively reach your audience at scale, leveraging seamless delivery across various channels. The TeleSign Messaging API supports SMS, RCS, and WhatsApp, empowering you to create secure digital interactions that engage customers globally. By integrating a unified Messaging API, you can begin dispatching dependable and secure messages via SMS, RCS, and WhatsApp to your clientele today. Opt for one, two, or all three channels to diversify your programmable messaging approach and broaden your reach. With over 120 optimized points-of-presence and more than 700 direct-to-carrier routes, connect with an even larger customer base effortlessly. This expanded network ensures your messages are delivered efficiently and effectively.

A flexible communications cloud with advanced APIs to voice and SMS Video and audio designed by the original geeks in software-defined telecom.

Exotel is a cloud-based business phone system that is reliable and secure. It is easy to set up. No additional infrastructure or equipment is required. It allows sales and support teams to work from anywhere. Your customers will enjoy a personalized calling experience. Exotel's drag-and-drop builder makes it easy to track, manage, and build call flows. Easy setup of SMS campaigns. We guarantee the best delivery rates. Delivery to more than 190 countries. Easy user verification via SMS and calls. The best success rates and non-intrusive.

Create your own messaging platform complete with chat and video call capabilities in just a few minutes by utilizing the QuickBlox chat API and SDK. QuickBlox offers an instant messaging API that seamlessly integrates chat and calling features into any application, whether it be for Android, iOS, or the web. It encompasses all the essential functionalities needed to develop a top-notch messaging app, including high-quality one-on-one and group calls powered by WebRTC. Additionally, it provides flexible data and file storage solutions that enhance your messaging experience. You can easily integrate ongoing business workflows with real-time alerts and notifications, as well as share and link a wide array of file types, including images, audio, video, documents, and more. QuickBlox is currently utilized by over 30,000 software developers and organizations around the globe. As a HIPAA-compliant chat solution, QuickBlox is trusted by healthcare providers worldwide, catering to a diverse clientele that ranges from large corporations managing millions of healthcare and insurance records to innovative startups relying on our services for their telemedicine communication needs. This versatility highlights the effectiveness of QuickBlox in meeting various industry demands.

Nexa|Voice is a software development kit (SDK) that provides advanced biometric speaker recognition algorithms, along with essential software libraries, user interfaces, reference programs, and comprehensive documentation to facilitate the use of voice biometrics for multifactor authentication on both iOS and Android platforms. The system allows for biometric template storage and matching to be conducted either directly on mobile devices or on remote servers, enhancing flexibility. With reliable and configurable Nexa|Voice APIs, users benefit from an intuitive interface, supported by technical assistance that has established Aware as a reputable provider of high-quality biometric software solutions for over twenty-five years. This high-performance biometric speaker recognition system ensures both convenience and security for multifactor authentication purposes. Additionally, the Knomi mobile biometric authentication framework comprises a suite of biometric SDKs operating on mobile devices and a server, enabling robust, password-free authentication through biometric verification from a user's mobile device. Offering a variety of biometric modalities, Knomi also includes options such as facial recognition, enhancing its versatility and user appeal.

Achieve truly lifelike AI voice production at unparalleled speed and scale. Generate content on demand with options for both text-to-speech and speech-to-speech inputs. Engage with new audiences in various localized languages using customized branded voices. Create voice-over materials without the hassle of coordinating schedules or incurring studio expenses. Replicate voices, including those of celebrities, sports commentators, and public figures, provided you have their permission. Leverage text-to-speech and speech-to-speech input to craft localized content as needed. Utilize Veritone’s established AI proficiency to enhance your voice automation processes and achieve widespread success. From refining metadata to creating dialogue, we employ top-tier AI technologies to ensure optimal outcomes from start to finish. Expand the capabilities of realistic, real-time AI voice across all your projects and products. With our cutting-edge AI voice API, you can streamline your processes and save precious time by integrating Veritone Voice directly into any application, enabling automation at scale while driving innovation in your voice solutions. Embrace the future of voice technology and transform the way you communicate.