UDP TCP @string/sip_call_options_entry_1 @string/sip_call_options_entry_2 @string/sip_call_options_wifi_only_entry_1 @string/sip_call_options_entry_2 @string/sip_always @string/sip_address_only @string/sip_system_decide @string/sip_always_send_keepalive