1.15 Optional Device FeaturesFeature Guide 103• Pager VolumeIt is possible to change the volume level of an external pager through systemprogramming.Installation Manual ReferencesInstallation Manual2.9.1 Connection of PeripheralsUser Manual ReferencesUser Manual1.3.4 Trunk Answer From Any Station (TAFAS)1.15.4 Background Music (BGM)DescriptionA proprietary telephone (PT) user can listen to background music (BGM) through the built-inspeaker while on-hook and idle.BGM—ExternalBGM can also be broadcast in the office through an external pager (loudspeaker) and can beturned on and off by an extension assigned as a manager.Conditions[BGM]• Hardware requirement: A user-supplied external audio source, such as a CD player orradio.• The music heard through the PT is interrupted when going off-hook.[BGM—External]• Hardware requirement: A user-supplied external pager• The external pager can be used with the following priorities:Trunk Answer From Any Station (TAFAS) Paging BGM( 1.14.1 Paging, 1.15.3 Trunk Answer From Any Station (TAFAS))Installation Manual ReferencesInstallation Manual2.9.1 Connection of PeripheralsUser Manual ReferencesUser Manual1.7.5 Background Music (BGM)2.1.4 External Background Music (BGM)