Installation guide

Talkback
All speakers in a zone will be two-way speakers, if talkback has been
enabled for a zone. Therefore all speakers in the talkback zone will pick
up ambient noise, as well as the voices of persons addressing the paging
speakers.
It is not recommended to have more than two speakers in a zone that is
designated for talkback. However, there are situations where it is
desirable to have more talkback speakers in a zone. For example, a
security guard may want to listen to sounds throughout a restricted area
containing several dozen talkback speakers, which would be configured as
a single zone. See the Installation Guide for details about speaker
connections.
See table 2-18 in section 2 for programming details. Figure A-5 illustrates
talk-back in the PagePac Plus system.
Application Notes
A-9