PreferenceSpecifiers DefaultValue Key wifi_only_preference Title Wifi only Type PSToggleSwitchSpecifier Key stun_preference Title Stun server Type PSTextFieldSpecifier AutocapitalizationType None AutocorrectionType No DefaultValue Type PSToggleSwitchSpecifier Title Random Port Key random_port_preference DefaultValue Key port_preference Title Port Type PSTextFieldSpecifier AutocapitalizationType None AutocorrectionType No KeyboardType NumberPad DefaultValue 5060 DefaultValue udp Key transport_preference Title Transport Titles udp tcp tls Type PSMultiValueSpecifier Values udp tcp tls DefaultValue None Key media_encryption_preference Title Media Encryption Titles None SRTP ZRTP Type PSMultiValueSpecifier Values None SRTP ZRTP