English translation for "party line ringing key"

同线电话振铃电键

Similar Words：

"party line controller" English translation, "party line identification" English translation, "party line module" English translation, "party line radio communication" English translation, "party line ringing" English translation, "party line service" English translation, "party line station" English translation, "party line subscriber" English translation, "party line system" English translation, "party line technique" English translation