10.2 PBX Configuration—[2-2] System—Operator &BGMSettings related to the PBX operator and audio sources can be specified.PBX Operator—Day, Lunch, Break, NightSpecifies the extension number or floating extension number of incoming call distribution group to bedesignated as the PBX operator in each time mode (day/lunch/break/night). To select an extension number,click Destination Setting (see 2.1.6 Extension Number Setting).If Automatic copy to UM Operator (No.1) is checked here, the PBX Operator extension number(s) set forDay/Lunch/Break/Night will be copied to the Unified Messaging service’s Operator Extension for OperatorService No. 1 (see 23.2 UM Configuration—[4-2] Service Settings—Parameters—AutomatedAttendant— Operator Service).Value RangeMax. 5 digits (consisting of 0–9)PC Programming Manual References10.4 PBX Configuration—[2-4] System—Week Table10.6.1 PBX Configuration—[2-6-1] System—Numbering Plan—Main11.5.1 PBX Configuration—[3-5-1] Group—Incoming Call Distribution Group—Group Settings23.2 UM Configuration—[4-2] Service Settings—Parameters—Automated Attendant— Operator ServiceFeature Guide References5.1.5 Operator FeaturesBGM and Music on Hold—Music on HoldSelects the audio source for Music on Hold.Value RangeTone, BGM1, BGM2, BGM3, BGM4, BGM5, BGM6, BGM7, BGM8Feature Guide References2.13.4 Music on HoldBGM and Music on Hold—Sound on TransferSelects the audio source for Music for Transfer (either the same music source chosen for the Music on Hold,or ringback tone).Value RangeSame as Music on Hold, Ringback ToneFeature Guide References2.12.1 Call TransferPC Programming Manual 39510.2 PBX Configuration—[2-2] System—Operator & BGM