DTMF/ FSK compatible Caller ID. Ringer volume control Switch. Toggle Mute. Two way speaker Phone with adjustable Volume. LED for In use indication. Redial (31 digit Redial memory). 30 incoming calls memory. 5 outgoing calls memory. 6 step LCD contrast adjustable. 16 digit LCD display. Display of incoming numbers, new call, total calls & repeat calls. Checking, Erasing and call back for incoming / outgoing calls/pre-dialing. Flash 300ms (100ms, 300ms, 600ms, 1000ms programmable). Tone/ Pulse selectable through software. Pause. VIP memory. Conversation time display.