Features 3-353 Features M-OMicrophone MuteAllows a proprietary telephone user to turn off the microphone for privacy.• The user’s voice will only be muted during a handsfree conversation. The user can hearthe other party’s voice during Microphone Mute.• Operating Instructions Reference1.5 During a Conversation, “Turning off the Microphone (Microphone Mute)”+!!Music on Hold / Background Music (BGM)While an external party is on hold, music is automatically generated.• Operations such as Call Hold and Call Transfer activate Music on Hold.• A user-supplied external music source, such as a radio, must be connected to the systemwhen “External” is selected in program [111]. One external music source can beconnected to the system. The music source is used for Music on Hold and/or BGM.• When “Tone” is selected in program [111], the cyclic tone is used only for Music on Holdand the external music source is used for BGM.• Connection Reference2.10 External Music Connection• Required System Programming[111] Hold Music Selection• Related Feature ReferencesHold, Call Transfer – to Extension, Call Transfer – to Outside (CO) line,Uniform Call Distribution (UCD)• Operating Instructions Reference1.7 Useful Features, “Turning on the Background Music (BGM)”+!!One-Touch DialingAllows a proprietary telephone user one-touch access to a desired party or system feature.This is done by storing an extension number, telephone number or a feature number (up to16 digits) in a One-Touch Dialing button. One-Touch Dialing buttons can be assigned toflexible buttons in the Proprietary Telephone Settings.• An account code can be stored into a One-Touch Dialing button.• A number consisting of 17 digits or more can be stored by dividing it and storing it in2 One-Touch Dialing buttons.!!