• This feature can be used only between the Master unit and the Backup Master unit. If a SIP CO line is
specified as a backup at a site other than the Backup Master unit (including the Master unit), the setting is
ignored.
Installation Manual References
2.1.1 System Configurations—One-look Networking Survivability
8.4.2 One-look Networking Survivability
→Backup Master Mode
→Isolated Mode
PC Programming Manual References
3.1 Home Screen
9.4 PBX Configuration—[1-1] Configuration—Slot—System Property—Multisite— Master Suspend if Backup
Master Detected
9.5.1 PBX Configuration—[1-1] Configuration
—Slot—Site Property—Main—Main
→
Isolated Mode
→ Switch Time Service to "Break" in Isolated Mode
9.11 PBX Configuration
—[1-1] Configuration—Slot—V-SIPGW—Port Property—Main—
Backup
10.6.2 PBX Configuration—[2-6-2] System—Numbering Plan
—Quick Dial
3.1.2 BGM (Background Music)
Description
A proprietary telephone (PT) user can listen to background music (BGM) through the built-in speaker while
on-hook and idle. The following audio sources are available for BGM:
• External Music Source
• Internal Music Source
BGM—External:
BGM can also be broadcast in the office through external pagers (loudspeakers) and can be turned on and off
by 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 can
simultaneously perform the BGM feature. Changing this setting may affect the number of simultaneous IP
extension 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 2016-03
3.1.2 BGM (Background Music)