(Placeholder) Demo firmware that is commonly available has a fixed rates of 10ct for a 10/11 digit call, 25ct for 7-digit local call and the same rate for certain NPA's. To edit the advert messages or speed dial buttons you need a hex editor and some experience. It also has several bugs, like some coins not being detected properly (a nickel recognized randomly as 5 or 6 cents, a dollar coin - 9 cents) etc.

We're currently working on a free online editor that would let you customize all above, plus some extra settings. Expect updates May 2025.