Chapter 3 - Strata Airlink; System Components - Toshiba Strata DK14 General Description Manual

Strata AirLink
The Strata AirLink Wireless system adds wireless telephone service to new or existing Private
Branch Exchanges (PBXs) or key/hybrid telephone systems. There are two available
configurations:
Base Station Interface Adapter (BSIA) system that interfaces to Strata DK systems and many
non-Toshiba systems using the standard telephone ports.
RWIU system that interfaces to Strata DK16 and DK16e, DK40i, DK280, and DK424, using a
proprietary RWIU Printed Circuit Board (PCB).
The Strata AirLink wireless systems operate in single building and campus environments in the
1920~1930 MHz bandwidth. This bandwidth is designated by the Federal Communication
Commission (FCC) for unlicensed operation in the United States.
The Strata AirLink Standard wireless system has Base Stations, handsets, Base Station Interface
Adapters (BSIAs) or controllers, and the Strata AirLink Manager software. The BSIAs interface
with the standard analog telephone PCB (RSTU2) to support up to two Base Stations.
The Strata AirLink Digital wireless system has Base Stations and handsets, but interfaces directly
to the Strata DK16, DK16e, DK40, DK40i, DK280, and DK424 using its own digital PCB
(RWIU) instead of the BSIA. The card functions as a protocol converter between the Base Stations
and the telephone system. It has four digital circuits that connect to four Base Stations using the
industry standard RJ11 jack. Multiple RWIUs can be installed to increase the capacity.

System Components

Figure 6 shows the external interface wireless telephone system connected to a PBX. Analog
station ports in the PBX connect to the BSIA and provide a signal to the Base Stations. The Base
Stations convert the analog signal to an RF signal for transmission to the handsets. The same lines
can be connected to wired extensions for users that have both wireless and wired extensions.
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