crossed line

(telephony) situation when portions of a second call are audible to persons on a telephone connection.

Japanese Meaning

電話回線上で、他の通話の音声が一部聞こえてくる現象。

When we dialed, we heard snippets of a stranger's conversation through a crossed line.

電話をかけたとき、別の人の会話が回線の混信で断片的に聞こえてきた。

Sense（1）

(telephony) situation when portions of a second call are audible to persons on a telephone connection.

crossed lines

（ plural ）