• This feature can be used only between the Master unit and the Backup Master unit. If a SIP CO line isspecified as a backup at a site other than the Backup Master unit (including the Master unit), the setting isignored.Installation Manual References2.1.1 System Configurations—One-look Networking Survivability8.4.2 One-look Networking Survivability→Backup Master Mode→Isolated ModePC Programming Manual References3.1 Home Screen9.4 PBX Configuration—[1-1] Configuration—Slot—System Property—Multisite— Master Suspend if BackupMaster Detected9.5.1 PBX Configuration—[1-1] Configuration—Slot—Site Property—Main—Main→ Isolated Mode→ Switch Time Service to "Break" in Isolated Mode9.11 PBX Configuration—[1-1] Configuration—Slot—V-SIPGW—Port Property—Main— Backup10.6.2 PBX Configuration—[2-6-2] System—Numbering Plan—Quick Dial3.1.2 BGM (Background Music)DescriptionA proprietary telephone (PT) user can listen to background music (BGM) through the built-in speaker whileon-hook and idle. The following audio sources are available for BGM:• External Music Source• Internal Music SourceBGM—External:BGM can also be broadcast in the office through external pagers (loudspeakers) and can be turned on and offby an extension assigned as a manager.Conditions[BGM]• Hardware requirement: User-supplied music source (when an external music source is assigned)• The music heard through the PT is interrupted when going off-hook.• Each extension user can select the audio source.• Through system programming, it is possible to specify the maximum number of IP-PTs that cansimultaneously perform the BGM feature. Changing this setting may affect the number of simultaneous IPextension and IP CO line calls available on the mother board.[BGM—External]• Hardware requirement: A user-supplied external pager• External pagers can be used with the following priorities:Trunk Answer From Any Station (TAFAS) ® Paging ® BGM(® 15.1.1 Paging, ® 19.1.1 TAFAS (Trunk Answer From Any Station))42 Feature Manual Document Version 2016-033.1.2 BGM (Background Music)
