HomeServicesBlogDictionariesContactSpanish Course
Home › Dictionary › English › plain old telephone service
Back to search

plain old telephone service

Noun CEFR C2

Definitions

A traditional telephony system based on the analog transmission of sound, as opposed to newer alternatives like ISDN or VoIP.

uncountable

CEFR level

C2
Mastery
This word is part of the CEFR C2 vocabulary — mastery level.
See all C2 English words →

See also

plain paper plain people plain point plain pug plain radiography plain sailing

Learn this word in context

See plain old telephone service used in real conversations inside our free language course.

Start Free Course

Know this word better than we do? Language is a living thing — help us keep it growing. Collaborate with Babel Free