VoIP SIP SDK for Flutter

VoIP SIP SDK for Flutter allows you to develop cross-platform SIP softphone for Android and iOS.

Operating System:
Windows (Android target)
Mac OS X (Android and iOS targets)
Linux (Android target)

Development environments:
Android Studio
Visual Studio Code

iOS versions:
iOS 9, 10, 11, 12, 13, 14, 15

Android versions:
Android 4.x, 5, 6, 7, 8 , 9 , 10 , 11, 12

Support of SIP and RTP
Voice and video calls
Blind call transfer
Call audio recording (without UI)
STUN support