Console Pcbs; Attendant Console Interface Unit (Ratu, Dk424 Only); Co Line Pcbs; Caller Id Interface Unit (Rciu2) - Toshiba Strata DK14 General Description Manual

DK40i – a K5RCU or K5RCU2 must be installed in the Base KSU to interpret DTMF tones
transmitted by devices connected to the standard telephone circuits.
DK424 – an RRCS must be installed on the common control unit to interpret the DTMF
signals for devices connected to the standard telephone circuits.
48V Loop Voltage (R48S)
The optional R48S unit can be connected to the RSTU2 or RDSU, and, by creating 48V loop
voltage instead of 24V, can extend the maximum possible loop length of standard telephone
circuits (including the resistance of the phone) from 600 ohms to 1200 ohms, allowing standard
telephones to be connected farther from the system.
By using this unit, a less expensive type of off-premises lines can be used (see
40).

Console PCBs

Attendant Console Interface Unit (RATU, DK424 only)

The RATU can support four attendant consoles. Multiple consoles enable automatic load-sharing
on a rotation basis from a central call queue, increasing call handling efficiency. The RATU PCB
in the Strata DK424 system cabinet connects to the PC Attendant Console Interface (RATI) via
two pair of wires.
RATU is only available for systems operating with RCTUBA/BB, RCTUC/D or RCTUE/F
common control units. One RATU is available per system to support a maximum of four Attendant
Consoles per system with RCTUC/D or RCTUE/F, two with RCTUBA/BB, (any combination of
PC or conventional consoles).

CO Line PCBs

A summary of Strata DK station, CO line PCBs and feature subassemblies are listed in
Page 40.

Caller ID Interface Unit (RCIU2)

The RCIU2 is required, along with an analog ground/loop start CO line PCB, to provide the Caller
ID feature. Caller ID is also known as CLID and is available at extra cost per line from the local
Telco. It is sometimes known as a CLASS feature.
Each RCIU2 circuit receives and decodes telephone number and name information sent from the
calling CO. Caller ID is available on analog loop start lines and analog ground start lines only. An
RCIU2 circuit must be available with each RGLU2, RCOU/RCOS, PCOU or KCDU2 circuit that
is to receive Caller ID. Built-in gas tubes help protect each RCIU2 circuit from lightning surges.
An RCIS subassembly PCB can be installed onto the RCIU2 to provide four additional Caller ID
circuits.
Caller ID Interface Subassembly (RCIS)
The RCIU2 comes equipped with four Caller ID circuits; an RCIS subassembly PCB can be
installed onto the RCIU2 to provide four additional Caller ID circuits. Hence, an installed RCIU2/
RCIS can provide a maximum of eight Caller ID circuits per cabinet slot. Built-in gas tubes help
protect each RCIU2/RCIS circuit from lightning surges.
Strata DK General Description 5/99
Universal Slot PCBs
Console PCBs
Table 23 on Page
Table 23 on
37