The IPS Secure Softphone is an open-source softphone for mobile and desktop environments (iOS, Android, GNU/Linux, macOS, Windows). It is fully SIP-based, for all calling, presence, and IM features. API interface to Twilio for access to local, national, and mobile phone numbers in more than 100 countries. Great for social media messaging and SMS texting.

Softphone comes bundled with IPS services. Enjoy its intuitive interface and advanced features with our secure communications service.
Easy-to-use graphical interface:
• Account creation assistant
• Smart contact list, with address book synchronization for smartphones
• Call history
• Remote provisioning by IPS

Advanced calling features:
• HD video calls with video preview (H.264, H.265 and VP8 codecs supported)
• Audio conference calls
• Call transfer and multi-call management (pause and resume)
• Call recording and replay (audio only)

Increased audio and video quality:
• State-of-the-art adaptive jitter buffer algorithm
• Innovative adaptive bitrate control
• HD voice (Opus support) and echo cancellation
• Call quality indicator and display of advanced call statistics

Enhanced Instant Messaging experience:
• One-to-one and multi-participant conversations
• Intuitive message delivery status (IMDN)
• Picture and file sharing
• Multi-device support
• Advanced IM notifications, with “reply to” and “mark as read” options

Secure communications encryption:
• TLS with state-of-the-art cypher algorithms
• Audio and video encryption with SRTP and ZRTP
• End-to-end encryption for 1-to-1 and group messaging using AES 256 bit