d3ad wroteThanks Gamer, but what i am looking for is a system which i can take orders and save customer data, which can later be retrieved via Caller-ID or manually putting in the number.
So what you need is a point of sales (POS) software with Caller-ID for restaurants. You can try the
SambaPOS (side note: I've never tried it myself, but if you did we'd like to hear some feedback).