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¦ With secrecy on, you can talk to someone in the room without your caller hearing. ¦ The Calls light flashes to indicate an incoming call. ¦ With Call Waiting*, when you are already on a call and another caller is trying to get through the call waiting beep will sound to alert you. ¦ Desk or wall mountable for your convenience. * To use this feature you must subscribe to a Call Waiting service from your network provider. A quarterly fee is payable. BT Duet 20 – Issue 2 Edition 01 – 12.02.04 – 5