Chapter 5. Peripheral Equipment Section 300~installationInstallation1. Connect the external ringer to the “C” and “M” terminals on theConnector Panel. (See Figure 5-9 on page 5-18.)Note: When the Ring Patterns for UNA Terminals (M, C, & B)programming command (FF12#4# l# (0 or l)# is set to 0, connecting theringer to the “C” and “M” terminals provides a “1 second on/3 secondsoff’ ringing pattern and connecting to “C” and “B” terminals provides a“1 second off/3 seconds on” ringing pattern.2. Connect the external ringer to its DC power source.Figure 5-9. External ringer (UNA device) installalimCN2 Note: Connect to C and B Terminals ifbell needs to break contact to b’ip.-48V SG &: RG +24V GND C 6 M ZO Zl 22 23 24 RE2 REl/rr o’o~olo~ololoioiolololololololo)INotes:l Most often, Univeral Night Answer notification is provided by an externalringer device. Universal Night Answer (UNA) can alternatively be set toring over the paging system. See “Paging” on page 5- 14 for moreinformation.l If UNA operates over a external ringer device, it is not recommend thatexternal paging also be used. Since contacts C, B and M activate for bothUNA calls and external pages, the external ringer device would turn ONfor all pages.5-l 8 DBS Manual - Issued 8/l/95 DBS-70-300