call recording
Refers to the act or function of recording telephone or voice calls, or the resulting recording.
This app supports call recording.
The retention period for call recordings is 30 days.
録音 is general audio recording, while 通話録音 specifically refers to recording telephone or voice calls.
Compound of 通話 (つうわ, 'phone call') and 録音 (ろくおん, 'audio recording').