Complex sentence: The user of the booth pays for the call by depositing coins into a slot on the telephone, by entering a payment code on the telephone's keypad, by swipe-card ("Swipe & Call") or by using a telephone card.
Split into simpler sentences: The user of the booth pays for the call by depositing coins into a slot on the telephone. Call may be paid for by entering a payment code on the telephone's keypad, by swipe-card ("Swipe & Call") or by using a telephone card.