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留守番電話にメッセージを録音してください。
Please leave a message on the answering machine.
To leave a recorded message on an answering machine or voicemail system.
留守番電話に録音するのを忘れないでください。
Don't forget to leave a message on the answering machine.
彼は留守番電話に録音しておいた。
He left a message on the answering machine.
Commonly used in both personal and business contexts when leaving messages on answering machines or voicemail systems.
Avoid using 録音する (rokuon suru) alone when referring to leaving a voicemail. It is more natural to specify the device or system, such as 留守番電話 (answering machine) or ボイスメール (voicemail).
留守番電話 (rusuban denwa) means 'answering machine' (lit. 'stay-at-home phone'), and 録音する (rokuon suru) means 'to record'. The phrase combines these to mean 'to record a message on an answering machine'.
This phrase is commonly used in everyday Japanese to describe the action of leaving a voicemail. It is not idiomatic but is a direct and literal combination of the words.