English translation for "all-relay central office"

全继电器电话局
自动电话总局

Similar Words：

"all-red" English translation, "all-red interval" English translation, "all-regime controller" English translation, "all-relay" English translation, "all-relay automatic system" English translation, "all-relay coded interlocking" English translation, "all-relay dial system" English translation, "all-relay exchange" English translation, "all-relay free lever cabin" English translation, "all-relay interlocking" English translation