相手 あいて さき固定 こてい接続 せつぞくだったら
aitesakikoteisetsuzokudattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 相手先固定接続

1. If the connection was fixed to the other party's schedule; If the connection were fixed to the other party's schedule

Tara Conditional
Computing