三者 さんしゃ通話 つうわ機能 きのうではありませんでした
sanshatsūwakino udewa arimasendeshita

Noun
Desu Copula

The polite, past negative form of 三者通話機能

1. Was not a three-party call function.; Did not have a three-party call function.

Past/Perfective
Negative
Polite
Formal Register
Computing