Section 300-Installation Chapter 5. Peripheral EquipmentDBS-2.3/9.2-300 DBS Manual - Revised April 2000 5-17• If UNA operates over the paging system, the Audio Output of CN4provides the Audio Ringback sound to be heard over the paging systemwhen a trunk rings UNA.• If UNA operates over the paging system, the UNA ringing will alwaystakes precedence over paging. When a page is interrupted in progress, thepager must hang up and wait until after UNA ringing ends to reinstate thepage.• If UNA rings over the paging system, set the Ring Patterns for UNATerminals (M, C, & B) to continuous ring burst (FF1 2# 4# 1# 1#). Thissets the contacts to remain continuously activated during the UNA ringbroadcast.External Ringer (UNA Device)Guidelines• An external ringer device can be used to alert users when Universal NightAnswer (UNA) calls come in.• The external ringer device is not provided with the DBS. It must bepurchased separately.• UNA calls can also be set to ring over an external paging system. See“Paging” on page 5-14 for more information. This alternate connection ispreferred when both paging and UNA are required.• The contact rating for the “C” and “M” terminals is 30V DC, 1 amp(maximum).
