The setting is disabled by default. If the UDP communication is blocked by your router and you enable the setting, the network can be stabled.
Note: When you'd like to use the UPnP Port Mapping in iOS 14 or later, go to "Settings" on the device > "SkyPhone" > Enable access to "Local Network." If the access is disabled, it is possible that you cannot start calling correctly.
<SkyPhone User Support Availability During the September Holidays>
Please be informed that SkyPhone User Support will be closed during the following period due to Japanese national holidays.
Support Closure: September 19 (Sat.) – September 23 (Wed.), 2026
Unavailable Services: Responses to support inquiries and related support services
Inquiries received after 1:00 PM (JST) on September 18 will be answered sequentially from September 24.
We apologize for any inconvenience this may cause and appreciate your understanding.
Please note that while our user support services will be closed during this period, SkyPhone will remain available as usual.
If you need our support, click here to contact us.
Business hours to reply to your message: Monday to Friday 10:00 AM to 5:00 PM (JST), except for national holidays