telephone call charge; call rate
Refers to the fee for a telephone call, typically based on duration or distance. Common in contexts like mobile plans, international calls, and public phones.
International call charges are expensive.
This plan has free call charges.
料金 is a general term for 'fee' or 'charge', whereas 通話料 is specifically for telephone calls.
Compound of 通話 (tsūwa, 'telephone call') and 料 (ryō, 'fee'). The reading つうわりょう follows standard on'yomi.