Equipped with a "annoying prevention *1" feature that sends a warning message to the opponent before the ring ring ring sounds automatically. Alternates between the call and the alarm announcement during an incoming call. Answer calls and record calls. The recording time is up to 4 recordings, and the recording time is up to 5 minutes per case. Even without a number or display agreement, you can still display the absent call history (date and time only) even if the number display is not used. Remember up to 30 dates and times of your phone (phone number is not displayed). 1 setting is required. If you use the number display service, the anti-bothering function will only work when it comes from someone who is not registered in the parent phone book. Regarding usage of an IP Phone: General household phones (listed ones) can be used by simply connecting to an IP-compatible modem. However, we do not guarantee the use of all providers and telephones in combination so you may need to contact your provider or phone manufacturer for how to deal with it. In addition, the outline status of the other end of the call may also be affected.