blueSIP Basic allows you at no cost (no fixed costs, no connection fees) to telephone with other SIP users. Thanks to the blueSIP PSTN gateway you are reachable from fixed-line telephone numbers (standard telephone lines) with your blueSIP number and you can call toll-free numbers (e.g. +49 800).

To place calls to fixed-line or mobile users, you will need to complete and sign a blueSIP Premium contract or use the prepayment option at blueSIP Basic.