Dial Tone Continues After OffHook

同义词释义

1)Dial Tone Continues After Off-Hook,摘机后拨号音不断2)No Dial Tone After Off-Hook,摘机后无拨号音3)No dialing after off hook for a long time,摘机后久不拨号4)Non-stop Dial Tone,(拨号后)拨号音不断5)off hook tone,摘机音;拨号音6)partial dial tone,拨号不全音