音信おんしん不通ふつう
onshin futsū

Noun

1. break in contact; not hearing from; having no communication with

Yojijukugo
ねん以上いじょう音信おんしん不通ふつうだったんだよ。
yonen ijōmo inshinfutsūdatta ndayo.
I haven't heard a word from them in over four years.
Other forms: