CTX Softphone is a voice over IP (VoIP) based softphone created by Solarix for Android devices. This free app helps you stay connected wherever you go, with high-quality audio and video calls, and instant messaging. Whether you're a small start-up or a large corporation, CTX Softphone is designed to streamline your business communication across mobile devices and teams.

One of the key features of CTX Softphone is its exceptional voice quality, thanks to its use of highly secure SIP-based technology. The app also supports multi-tasking, allowing you to field incoming calls while using other applications. Additionally, CTX Softphone supports HD audio codecs, including G.722, Opus, and SILK, and video in 720p HD when using H.264 or VP8 on supported devices.

With CTX Softphone, you can easily join team meetings using voice and video calling, and message or call any person or group within your team for fluid business communication. The app is available in English, Chinese, French, Japanese, Portuguese, Russian, German, and Spanish.

Overall, CTX Softphone is a thoughtfully innovated app with over 10 years of technology development, making it an excellent choice for anyone looking for a high-quality VoIP softphone for their Android device.