Clean room telephone KNZD-63A

analogVoIPSIP

FUNCTION: One key call:press CALL button,opposite side rings automatically, allow answer automatically. Incoming call flashing notice:led indicator brightens when calls coming. Talking time limited:It has 7 minutes to talk when the call is connected.Time to the end,telephone hang up automatically.The function of preventing the phone is busy are factor defaults. Automatically hang up: if called ended,the caller would hang up automatically after detecting the busy signal. Material:ABS Dimension:205*105*34mm Overall dimension drawing:as below picture We are an industrial telephone provider and we offer clean room phones with VoIP and analog versions and can be customized.