Definition, synonyms and related words
Noun
1
Initialism of Isosorbide Dinitrate.
"The patient was prescribed ISDN to help reduce chest pain caused by angina."
In plain English: ISDN is an old telephone system that lets computers send data over phone lines instead of using regular internet connections.
"The old phone in my parents' house still uses an ISDN line to connect to the internet."
Example Sentences
"The old phone in my parents' house still uses an ISDN line to connect to the internet."
noun
"The old telephone wiring is an ISDN line that needs upgrading for high-speed internet."
noun
"Many businesses still rely on their legacy ISDN connections to place international calls reliably."
noun
"After the network shutdown, users had to switch from traditional ISDN phones to VoIP services."
noun