2113 MESSAGE WAITING LAMPLocated on the front of the telephone, it blinks with each incoming call even when the ringer switchis OFF position.When connected to some PBXs, equipped with message waiting or voice mail systems, it can alsoblink or light steadily when a message is waiting for the user.A selection of 3 different systems is available.- Ringing Current.- DC high voltage (80-100 Volts).- Reverse polarity.To access to message lamp setting, do as follows:14 RINGERVolume choiceHigh-Medium-Low-Off switch is located on the right of telephone.Melodies choice8 Melodies are available.To choose the ringer melody please see Chap. 15.6Setting accessPull up the screenRingingCurrentReversepolarity DC highvoltage 80Volts