相手 あいて さき選択 せんたく接続 せつぞくでした
aitesaki sentakusetsuzokudeshita

Noun
Desu Copula

The polite past form of 相手先選択接続

1. It was up to the other party to choose the connection.; It was the other party's choice how to connect.

Past/Perfective
Polite
Computing