PortSIP VoIP SDK Manual for iOS  16.2
PortSIP features our newest, supported, quality-assured VoIP SDK used by Several hundred companies around the world for easy VoIP application develop and quality-assured code.
Modules
Here is a list of all modules:
[detail level 12]
 SDK Callback events
 Register events
 Call events
 Refer events
 Signaling events
 MWI events
 DTMF events
 INFO/OPTIONS message events
 Presence events
 MESSAGE message events
 Play audio and video file finished events
 RTP callback events
 Audio and video stream callback events
 SDK functions
 Initialize and register functions
 NIC and local IP functions
 Audio and video codecs functions
 Additional settings functions
 Access SIP message header functions
 Audio and video functions
 Call functions
 Refer functions
 Send audio and video stream functions
 RTP packets, audio stream and video stream callback functions
 Record functions
 Play audio and video files to remote party
 Conference functions
 RTP and RTCP QOS functions
 Media statistics functions
 Audio effect functions
 Send OPTIONS/INFO/MESSAGE functions
 Presence functions
 Keep awake functions
 Audio Controller