OTC - One Time Call

OTC, or One Time Call, is an Internet communication mobile application that focuses on the privacy of both outgoing and receiving contacts. You can create your own contact number through the OTC system (OTC-ID). This OTC-ID can be created unlimitedly. This allows you to answer or make a single call and leave the number. Or you can set the duration of use of that OTC-ID, as well as set a PIN for that OTC-ID to restrict incoming calls as well.