CIK home phone service uses the internet to transmit the telephone signal to your home. To use our service, you need to have either high speed internet or any kind of DSL or Cable modem. As we are using the internet to transmit signal, a higher bandwidth would be preferable, but if you are using slower speed you have to put a CIK Phone box after the modem to get a better voice quality as our box have a special design to make voice quality higher priority. So you must have high speed internet before using our service.