Telephone Systems General Description

Features
Paging
Strata CTX General Description 11/02 61
Paging
The Strata CTX has a paging interface that supports a Toshiba External Speaker (HESB) or a
customer-supplied amplifiers and speakers for Paging, Night Ringing over Page, and BGM
applications. Users can access any of the Paging options by dialing access codes or by using a
programmed One Touch button.
Telephone Group Paging
Paging is activated from an extension by specifying a Paging Group. Paging can be broadcast
through digital telephone speakers and external paging devices simultaneously. The system
supports up to 16 telephone page groups with up to 32 telephones per group. Standard telephones
cannot be members of a page group.
External Speaker Page Zones
The Strata CTX supports eight different paging zones for external speakers. Users can access
zones by dialing an access code plus the zone or pressing a One Touch button. The zones are
composed of customer-supplied speaker(s) and amplifier(s). One BIOU supports up to four page
zone interfaces, a second BIOU is required for 5~8 zones.
Emergency Page
Designated stations can be permitted to place an Emergency Page to ensure they can reach all
concerned with an important announcement. An Emergency Page is one that will supersede any
current page to allow this privileged station to take over the paging apparatus. Like other forms of
paging, an Emergency Page can be an All Page or directed to a specific Page Group and External
Page Zones.
Each of the 16 Paging Groups supports up to 32 devices. Emergency Page groups follow the
regular Group Paging. The list for Emergency All Call Paging is a separately defined list from
regular paging. An emergency page may be answered in the same manner as a regular page.
Night Ringing Over Selected Page Zones
Lines can be programmed to night ring over eight selected Page zones via customer-supplied
paging equipment. Up to two BIOU PCBs can be installed to connect external paging or night
ringing equipment. Each BIOU supports up to four page zones.
Power Failure Protection
The Strata CTX has important optional capabilities that keep the system operating when
commercial AC power is interrupted.
Power Failure Transfer
The Strata CTX can immediately switch loop start analog CO lines directly to dedicated standard
telephones (customer-provided 2500- or 500-type) for incoming and outgoing calls in the case of a
commercial AC power failure. The transfer is automatic with no manual transfer procedure
required. During normal operation with AC power, the Power Failure telephones function with all
Strata CTX features available to a normal standard telephone. This feature requires an external unit
called the Power Failure Transfer Unit (DPFT).