加入 かにゅう しゃ せん交換 こうかん じゃありませんでした
ka nyūshasenkōkankijārimasendeshita

Noun
Desu Copula

The polite, past negative form of 加入者線交換機

1. Was not a joiner line switch.; Was not a member line switch.

Past/Perfective
Negative
Polite
Terminal Form
Computing