着信

1. Origins, structure, and basic meaning

• Structure: 着信 (ちゃくしん) is a call or signal arriving at a receiving device. It appears as an incoming event and as a call one decides whether to answer.
• Basic usage: A call arrives during a meeting; a recipient declines to answer an unknown number immediately.

2. Common pitfalls and similar expressions

• Occurrence of an incoming call and response based on caller information
  • 着信がある reports arrival of communication, while 着信には出ない describes the response to it. Its direction is opposite to placing an outgoing call.