Traditionally, 'ring in' is related to bell ringing to announce celebrations.

Celebratory Origins

'Ring in' can be used metaphorically to signify the start of any event, not just with actual bells.

Figurative Use

It's often used to indicate the enthusiastic onset of a significant period.

'Ring in' implies informing or updating, usually for accountability at work.

It's common to 'ring in' to notify unplanned absences, like calling in sick.

Use 'ring in' when someone or something is introduced suddenly, often as a last-minute solution.

Emphasize the replacement aspect, often due to necessity or strategy.