Chapter 1 - System Overview; Strata Dk14; Strata Dk40I; Strata Dk424 - Toshiba Strata DK14 General Description Manual

System Overview
The Strata DK14, DK40i, and DK424 are digital business telephone systems that are electronically
compatible with the public telephone network and can function in PBX or Centrex environments.
Each system can be configured as key or hybrid (DK424 PBX also) with separate Federal
Communications Commission (FCC) registration numbers. Feature capabilities are very similar.
The primary difference between models is capacity. Each system and station feature is described
completely, beginning on

Strata DK14

The Strata DK14 uses a compact, single cabinet, wall mount design. It provides built-in circuitry
for two CO lines and four digital stations. It can be expanded to a maximum capacity of four CO
lines and ten stations (eight digital telephone stations and two standard stations).

Strata DK40i

The Strata DK40i uses a compact, double cabinet (base plus expansion), wall mount design. It
provides capacity for four CO lines, eight digital stations, and four standard stations in the base
cabinet. With the expansion cabinet, it has a maximum capacity of 12 CO lines and 28 stations.

Strata DK424

The Strata DK424 uses a modular, building block system design that can be configured using from
one to seven cabinets (base cabinet and up to six expansion cabinets). This enables customers to
grow cost effectively from small to large configurations. They can reuse common equipment by
adding options rather than replacing existing hardware. The only part they potentially replace is
the processor, depending upon the size they start with or grow to.
There are four DK424 processor models available having different degrees of capacity, capability,
and price. The processors are:
RCTUA small system processor – for one-cabinet configurations not requiring some of the
advanced features, such as ACD/MIS, PRI, T1 Interface, Attendant Console, or System Open
Architecture Interface (OAI). It provides a maximum capacity for 16 CO lines and 32 stations.
RCTUBA/BB medium system processor – for one- or two-cabinet configurations and
supports all of the advanced features, such as ACD/MIS, PRI, T1 Interface, Attendant
Console, and System OAI. It provides a maximum capacity for 48 CO lines or 80 stations.
RCTUC/D large system processor – for up to six-cabinet configurations and supports all of
the advanced features. It provides a maximum capacity for 144 CO lines or 240 stations.
Strata DK Feature Description 5/99
Pages 15 and 119 respectively.
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