A、Niche phone cards. B、International phone cards. C、Domestic phone cards. D、Prepaid phone cards. A

It seems today that almost every type of phone card has been brainstormed. We now have niche phone cards, for calling to a specific region, or even more to a specific country. We have international phone cards, domestic phone cards, prepaid phone cards, postpaid phone cards, etc. Accompanying each phone card are its own rates, billing details and charges. Certain charges are universal, and applied to calling cards, while other phone cards have additional built-in fees.
    Almost all phone cards, with the exception of flat rate domestic phone cards, charge a predetermined rate per minute. Every destination has its own set of rates. In many cases, rates may vary from city to city within the same country. Like all commercial products, taxes must be paid on phone cards. Usually taxes are not included in the rate per minute charge. Connection fees are the most basic fees applied to calling cards. These were the first types of fees of many to come that were applied to a phone card. Connection fees charge a standard rate for every connection made.
    The fees listed above are additional fees that are not a required part of a phone card. Fees such as taxes, pay phone charges and the rate per minute can be found on almost every calling card. However, initial fees, maintenance fees and service fees are a sneaky tactic companies employ to display lower rates per minute. It is important to determine your needs before selecting a calling card. Frequent callers, or short-term callers should select cards that have few fees. Frequent callers, may be better off selecting a card with a low rates and other fees. Learn more about selecting the right calling card and save yourself money.
23. What kind of phone cards are used to call a specific region?
24. What are the most basic fees for a calling card?
25. What kind of cards are most suitable for frequent callers?