In FX options, a call on one currency is always a put on another. In a USD/JPY option, a dollar call is always a yen put, and vice versa. To simply talk about calls would be unhelpful; it would be better to talk about a dollar call or, better still, a dollar call/yen put.
Pricing Terminology
An FX option premium is usually stated as units of the quoted currency per unit of underlying base currency.
Let us take the example of a USD/JPY option on an underlying amount of USD 10 million. The price in terms of the quoted currency is 2.11. This means that the option costs JPY 2.11 per dollar. Since the underlying is USD 10 million, the option price is JPY 21.1 million (2.11 x 10 million).