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.
Integrated Services Digital Network
Full Japanese translation, but the acronym ISDN is far more common.
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 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.
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.
We still use an ISDN line in the office.
Means 'ISDN service'. Used when talking about the service provided by a telecom company.
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.
You need to configure the ISDN terminal.
The Japanese term for 'terminal adapter' (TA), often used with ISDN. Sometimes abbreviated as TA.
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ISDN is largely obsolete in Japan, having been replaced by fiber optics and VoIP.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.