The Mizu SIP iOS SDK is a SIP client for iPhone/iPad devices based on the PJSIP library. The SDK can be used to build your own SIP softphone for iOS or add VoIP capabilities into any iOS app. This is the only SDK offered by Mizutech which is based on a third-party library instead of Mizutech in-house development -for all other platforms we created our own SIP library from scratch. For this reason, currently we don't commercialize the iOS SIP SDK separately. We provide it "as-is" as an extra, bundled with our All-In-One SDK or if you purchase SDK for two other platforms (for example Android + Web or Java + Windows).
Features
The SDK includes all features supported by PJSIP, including full SIP (UDP/TCP transport) and SIPS (TLS/SRTP) support, NAT/STUN, wide codec support, AEC, DTMF, IM and many other features. We provide the followings above PJSIP:
iOS SIP SDK documentation