noun
call recording
Refers to the act or function of recording telephone or voice calls, or the resulting recording.
このアプリは通話録音に対応しています。
This app supports call recording.
通話録音の保存期間は30日です。
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').