international call
A telephone call between different countries. Used in contexts such as phone services, rates, and dialing.
International call rates are expensive.
I made an international call with a friend overseas.
国際電話 is a more common synonym for 'international phone call'. 国際通話 is slightly more formal and often used in technical or business contexts.
Compound of 国際 (international) + 通話 (telephone call).