Mango
Industries
Telecom & Media
Platforms
Android, iOS
Mango Voice is a leading provider of cloud-based business phone systems in the USA, offering advanced SIP and VoIP solutions to enhance business communication.
Mango Voice faced several critical challenges that needed to be addressed to improve its service offerings and client satisfaction:
Our implementation process was structured and systematic to ensure smooth development and deployment:
Developed Android and iOS apps using React Native. Developed a dialer to enable SIP calls directly from the mobile application. Integrated a custom-built library into the React Native app for seamless SIP connectivity. Customized the solution for iOS devices to ensure uniform performance across different operating systems. Customized the PJSIP library to enable call transfers and redirections within the network, out of network, or to a phone number Addressed OS-level complexities by updating core plugins and libraries as per project requirements. Actively maintained and updated core plugins to ensure compatibility with the latest OS versions. Streamlined protocol configurations for easy connectivity between mobile SIP clients and servers. Optimized settings to establish robust communication channels between users. Compiled critical components like OPUS, OpenSSL, and PJSIP with Android NDK for target architectures. Updated JNI libs and integrated SWIG-generated files for compatibility and performance across diverse hardware configurations. Developed features for users to request a voice message for missed calls as well as listen to the recording, and transcript the voice messages. Enabled Bluetooth connectivity for attending calls, enhancing user convenience. Enabled call transfer from SIP numbers to PSTNs through custom redirection implementations. Implemented Bluetooth connectivity for attending calls, enhancing user convenience. Custom-built solutions for voice message recording playback, allowing users to manage and transcribe voice messages within the app Added robust features for easy caller identification and contact management. Enhanced overall user experience and communication efficiency within the application. Streamlined CI/CD pipelines using GitLab to optimize platform updates. Ensured seamless integration of new features while maintaining stability and reliability. 
The solutions our team implemented to take the business communication experience to the next level proved to be a success and had the following outcomes.
Integrated accessibility features to enhance accessibility for all users ensuring optimal performance on both Android and iOS devices
Clients can now attend SIP calls on the Mango Voice app, greatly improving their flexibility.
Seamless call redirection and transfer capabilities streamlined client communication processes.
The addition of a voice inbox and Bluetooth connectivity made the app more user-friendly.
In order to develop the solution our team worked and developed a solution that was made available to the react community.
React
Visual Studio Code
Xcode 11.3
Android Studio
Swift
Objective-C
Kotlin
JAVA
ES6
Kamailio
FreeSwitch
PJSIP
OPUS
GitLab
OpenSSL
React
Visual Studio Code
Xcode 11.3
Android Studio
Swift
Objective-C
Kotlin
JAVA
ES6
Kamailio
FreeSwitch
PJSIP
OPUS
GitLab
OpenSSL
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They delivered a more robust product than we expected within the time and budget we had laid out.
The team exceeded expectations by enhancing the solution beyond the requested features. Their regular communication style kept stakeholders informed throughout the project. VT Netzwelt remained within time and cost estimates while maintaining well-organized task management methods.
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Co-Founder, Financial Technology Company
Telecom & Media
Telecom & Media
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