Previous iOS API Hierarchy Class Hierarchy NSObject WSCCallConfig WSCCause WSCHttpContext WSCHttpContextBuilder WSCIceServer WSCIceServerConfig WSCPackage WSCCallPackage WSCRegisterPackage WSCSession WSCSessionBuilder WSCSubSession WSCCall Protocol References CallObserverDelegate CallPackageObserverDelegate WSCChallenge WSCServiceAuthHandler WSCSessionConnectionDelegate WSCSessionIceServerDelegate WSCSessionObserverDelegate Constant References WSCCallState WSCCallUpdateEvent WSCMediaDirection WSCMediaStreamEvent WSCSessionState WSCStatusCode WSCTrickleIceMode Previous