是一个开源的SIP协议库，它实现了SIP、SDP、RTP、STUN、TURN和ICE。PJSIP作为基于SIP的一个多媒体通信框架提供了非常清晰的API，以及NAT穿越的功能。PJSIP具有非常好的移植性，几乎支持现今所有系统：从桌面系统、嵌入式系统到智能手机。-SIP protocol is an open source library that implements the SIP, SDP, RTP, STUN, TURN and ICE. PJSIP provided as a SIP-

webrtc ice 封装,协议为了提供一个强大的机制,它允许基于提供/回答协议SIP和XMPP遍历NATs等。-The Interactive Connectivity Establishment (ICE) protocol combines various NAT traversal utilities such as the STUN and TURN protocols in order to offer a powerful mechanism that allows Offer/A