A communication line capable of transmitting large amounts of data at high speed, such as home fiber-optic lines or enterprise leased lines.
引っ越し先に高速回線を引いてもらった。
I had a high-speed line installed at my new place.
高速回線があれば動画配信もスムーズに行える。
With a high-speed line, video streaming can be smooth.
在宅勤務では高速回線がほぼ必須になっている。
For remote work, a high-speed line has become almost essential.