OpenSource (GPL) project for SIP on Android. * High performances * Rewriting/filtering rules for integration with Android * SIP SIMPLE for Messaging * Record calls * Simple configuration * Fancy UI inspired from 4.x Holo theme * Many codecs (HD codecs, optimized codecs) * Supported crypto : TLS for SIP and SRTP/ZRTP for media * Themes More codecs (as the experimental Opus) and themes are available