void function ( ) { sip_provider . removeSipProviderListener ( id ) ; }
close the sipinterface . concode_field_sep SipProvider sip_provider concode_elem_sep SipInterfaceListener listener concode_elem_sep Identifier id concode_field_sep SipProvider getSipProvider concode_elem_sep void onReceivedMessage concode_elem_sep ConnectionIdentifier sendMessage concode_elem_sep ConnectionIdentifier sendMessage concode_elem_sep ConnectionIdentifier sendMessage