Translation guide
ISDN (Integrated Services Digital Network) is a set of communication standards for digital transmission of voice, video, and data over traditional telephone copper wires. In Japanese, it is commonly referred to by the acronym ISDN, pronounced アイエスディーエヌ.
Referring to the ISDN telecommunications standard itself.
The acronym ISDN is used as-is in Japanese, typically written in Latin script or sometimes in katakana as アイエスディーエヌ. It is understood in technical and business contexts.
ISDNはデジタル通信の規格です。
ISDN is a digital communication standard.
This is the full Japanese translation of 'Integrated Services Digital Network', but it is rarely used in practice. The acronym ISDN is preferred.
統合デジタル通信網はISDNとも呼ばれます。
Integrated Services Digital Network is also called ISDN.
Referring to an ISDN telephone line or subscription service.
Means 'ISDN line'. This is the standard way to refer to an ISDN connection.
オフィスではまだISDN回線を使っています。
We still use an ISDN line in the office.
Means 'ISDN service'. Used when talking about the service provided by a telecom company.
ISDNサービスは2024年に終了しました。
The ISDN service ended in 2024.
Referring to hardware devices that connect to ISDN, such as terminal adapters or ISDN modems.
Means 'ISDN terminal'. A general term for devices that connect to an ISDN line.
ISDN端末を設定する必要があります。
You need to configure the ISDN terminal.
The Japanese term for 'terminal adapter' (TA), often used with ISDN. Sometimes abbreviated as TA.
ISDN用のターミナルアダプタを購入しました。
I bought a terminal adapter for ISDN.
In Japanese, ISDN is almost always referred to by the English acronym. Pronounce it as アイエスディーエヌ (ai-esu-dii-enu). Writing it in Latin script is common, but katakana is also acceptable.
ISDN is largely obsolete in Japan, having been replaced by fiber optics and VoIP. Mentioning ISDN may sound dated unless in a historical or specific technical context.