FaceTime is a video calling application first released on the Apple iPhone 4. FaceTime is built upon H.264 and AAC video and audio codecs, SIP (IETF) for VoIP, STUN, TURN and ICE (IETF) for traversing firewalls and NAT, and RTP and SRTP (IETF) protocols for real-time streaming.

This SonicWALL signature identifies legitimate FaceTime traffic.