Toshiba Strata Dk14, Dk40i, Dk424i General Description Manual

Strata DK40i
Power Considerations
Strata DK General Description    6/0015
Power Considerations
The power supply generates +5VDC and -24VDC for the entire system, even in its expanded 
configuration (see Ta b l e  8.) See Table 45 on Page 124 for environmental characteristics.).
Power Supply/Reserve Power
The power supply provides a built-in charger for the batteries (see Ta b l e  9). Two customer-
supplied 12VDC batteries can be connected to the power supply to maintain fully functioning 
operation...

Strata DK40i
Functional Block Diagram
16Strata DK General Description    6/00
Power Failure Interface
The Base KSU provides an interface for a dedicated backup standard telephone during an AC 
input power failure. If the system AC input power fails, the backup telephone automatically 
connects to the CO1 line. The backup telephone is disabled when the system operates during 
normal power conditions.
This feature is independent of Battery Backup and is available when loop start lines are installed in 
the...

Strata DK40i
Functional Block Diagram
Strata DK General Description    6/0017
Figure 8 Functional Block Diagram
_
+
Amp
Interface Box
DIUPOWERREADYCONNECT



TCIU2
U
UTBUU
TBSU
Night Bell, BGM Mute 
or MOH (Control Relay) Digital Telephone
and Add-on Module
AA Digital 
Announcer
TCOU Line OnlyMOH/BGM Source
DDCB
MDFB Digital Telephone and DSS Console
Voice Mail E911
Alternated BGM SourceStandard TelephoneDoor Phones 
and Lock Control
25-Pair
Amphenol
Connector
Digital Telephone with
Integrated Data...

Strata DK40i
Network Requirements
18Strata DK General Description    6/00
Network Requirements
See Table 43 on Page 122 for network requirements of station and line PCBs and interface cards.
System Technology
Pulse Code Modulation
Digital switching talkpaths enable all CO and intercom lines to be accessed simultaneously. 
Analog-to-digital and digital-to-analog conversion is done by CODECs (coder plus decoder) on 
station and CO line PCBs.
Custom Electronic Circuitry 
Large Scale Integration (LSI)...

Strata DK General Description    6/0019
Strata DK424i3
This chapter covers the new Strata DK424i digital business 
telephone system.
Strata DK424i easily connects to outside public telephone 
lines (CO lines). All of the telephones (stations) tied to the 
system can have direct access to each other as well as to the 
public network.
A modular design and a choice of four processors, also 
called common control units, enables the system to fit a 
variety of customer needs and capacities. 
The DK424i can be...

Strata DK424i
Processor PCBs
20Strata DK General Description    6/00
Processor PCBs
The system operates with one of four processors (B1CU, B2CAU/B2CBU, B3CAU/B3CBU, or 
B5CAU/B5CBU). These processors can only be installed in dedicated slots in the Base Cabinet 
(slots B101 and B102).

The B1CU unit consists of a single PCB. The B1CU processor supports only the DK424i Base 
Cabinet with up to eight universal slots.

B2CAU/B2CBU consists of two PCBs that support up to two cabinets, with up to 14 universal...

Strata DK424i
Cabinet Slots
Strata DK General Description    6/0021
RKYS Feature Key Upgrades
The system can be upgraded for built-in AA, Automatic Call Distribution (ACD), Software 
Management Information System (SMIS), Call Center Viewer and Insight DK with the following 
feature keys that attach to the processor. See Table 12 for a list of features provided by RKYS 
feature keys.
Table 12 RKYS Features
Cabinet Slots
Base Cabinet
The Base Cabinet has two slots reserved for the system processor PCBs and...

Strata DK424i
Maximum Station/Line Capacities
22Strata DK General Description    6/00
Expansion Cabinets
Expansion cabinets can be added to increase station and CO line capacity of systems that allow 
multiple cabinets. Figure 11 shows an example of the interior of an expansion cabinet.
Refer to the following section for station/line capacities. Ta b l e  1 3 shows the number of stations 
and lines allowed when additional cabinets and PCBs are used.
Printed Circuit Boards (PCBs)
PCBs are installed in the...

Strata DK424i
Maximum Station/Line Capacities
Strata DK General Description    6/0023
Configurations using analog line circuits are shown in Ta b l e  1 4. One universal slot is always 
required for a Remote Maintenance interface PCB with B3CAU/B3CBU and B5CAU/B5CBU; 
the Remote Maintenance PCB is optional for B1CU and B2CAU/B2CBU.
Table 14 Maximum Configurations Using Analog CO Lines
B1CUB2CAU/B2CBUB3CAU/B3CBUB5CAU/B5CBU
1 Cabinet
8 Universal Slots
56 Stations Max.
32 CO Lines Max.
64 Stations + Analog...

Strata DK424i
Maximum Station/Line Capacities
24Strata DK General Description    6/00
Configurations using T1 and/or ISDN PRI lines are shown in Table 15. One universal slot is 
always required for a Remote Maintenance interface PCB with B3CAU/B3CBU and B5CAU/
B5CBU; the Remote Maintenance PCB is optional for B1CU and B2CAU/B2CBU.
NoteIn some configurations, PRI lines are less because one channel is required for control of each 23 or 47 PRI lines. Table 15 Maximum Configurations Using T1 and/or ISDN PRI...