Auto dials pre-programmed phone number when handset is taken off-hook. ^^ Hearing aid-compatible handset with volume control Volume controls for the handset and speakerphone. Volume may be set to one of four levels. ^^ Audible Incoming call Ringer
Volume Control (Switch: Low ^^ Hi). Desk or wall-mount option. ^^ Visual incoming call alert led lamp Also functions as message waiting light for compatible with high voltage neon (90dc volts) and at&t/lucent/avaya low voltage led message waiting light systems (20 to 25dc volts). ^^ One (1) Year warranty.