also: ダイアルアップせつぞく
dial-up connection; dial-up access
Technical term for connecting to the internet via a telephone line and modem; now mostly historical.
In the old days, we used the internet with a dial-up connection.
Standard spelling for dial-up connection.
Variant spelling with ダイアル instead of ダイヤル; less common but encountered.
From English 'dial-up' + 接続 (connection).