Toshiba Strata Dk14, Dk40i, Dk424i General Description Manual

							Strata DK14
Maximum Line/Station Configurations
Strata DK General Description    6/005
Maximum Line/Station Configurations
The maximum line and station configurations for DK14 are shown in Ta b l e  3.
Table 3 CO Lines and Station Ports
Network Requirements
Network requirements of station/line PCBs and interface cards are summarized in Table 43 on 
Page 122.
DK14 SystemCO Line PortsDigital PortsStandard
Telephone Ports1
1. Standard telephone ports do not support MW lamps on standard telephones.Basic KSU240 or 2
Expanded KSU360 or 2
Expanded KSU480 or 2 
						

							Strata DK14
Functional Block Diagram
6Strata DK General Description    6/00
Functional Block Diagram
Figure 3 shows the Strata DK14 KSU PCBs and the available lines, stations and peripherals. Basic 
voltage and cabling information is also included.
Figure 3 Functional Block Diagram
SMDR
PrinterTOSHIBA
Standard Telephone
Stand-alone
Data Interface
Shared
Printer
DIUPOWERREADYCONNECTTOSHIBA
Digital Telephone
and Add-on Module
Digital Telephone
and Add-on Module
MOH/BGM Source
DDCB
MDFB
AMP
Digital TelephoneSpeaker
Door Phones and Lock Control
600Ω
Night Bell, BGM Mute, or
MOH (Control Relay)
AC Input
Battery Connector
115 ± 10VAC (0.7 AMP)
50/60 Hz
HPFB
Battery
and Charger
(first)
HPFB
Battery
and Charger
(second)
NoteOne or two optional HPFB 
reserve power units may be 
installed.
Power Failure
Telephone
Loop Start Lines
• FIC: 02LS2
• REN: 0.3 B
Central Office/
Centrex/PBXRJ11C/
RJ21X
RJ14CLine 1
           
Line 2CO1 PFT
CO2RJ11C
Modular Jack
QCDU2A  (first/optional)2 — Digital Telephone CKTS
1 — Loop CO Line CKT
CO3, RJ11C
CO4, RJ11C
Line 3
Line 4
QSTU2A (optional)2 — Standard
        Telephone CKTS 
WSIU (optional)DKi Admin, SMDR, SMDI 
or CLID Interface CKT
3-pair Modular Interface
FAX
TOSHIBA
Digital Telephone
With RPCI
Page
Output
Relay
Contact
25-pair Amphenol Connector
RS-232 Port 1RS-232 Port 2
QPSU8A2 Power Supply
QRCU3A(optional)
DTMF/ABR
Receivers (3)
KSU Main Circuit Board(standard)
4 — Digital Telephone CKTS
2 — Loop CO Line CKTS
RCA Jacks
QKYS1A(optional)
Auto
Attendant
Feature Key
2419
QCDU2A (second/optional)2 — Digital Telephone CKTS
1 — Loop CO Line CKT
Caller ID Interface 
Box (TC-1041)
117 VAC
1
11
1
1. Customer-supplied equipment
DK14 Key Service Unit
X
1
1
1
1
1 1
1 
						

							Strata DK14
System Technology
Strata DK General Description    6/007
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) technology makes the Strata DK14 circuit designs simple and 
efficient. Gate arrays using very large scale integration save vast amounts of space by using the 
latest technology. More circuitry fits onto smaller PCBs for a more compact system. Widespread 
use of CMOS circuits minimizes system power requirements.
Stored Program Control 
The system uses a 16-bit microprocessor for stored program control. The Strata DK14 System 
operating software is stored on Read Only Memory (ROM), and individual configuration and 
custom programming is stored on Random Access Memory (RAM). A lithium battery with a life 
span of at least six years preserves RAM in the case of a power failure.
Microprocessors 
The system’s main microprocessor is a 16-bit 68000-type that operates at a clock speed of 
8 MHz. In addition, some PCBs use 8-bit, TMP90C840-type local microprocessors that run at 10 
MHz. This distributed microprocessing architecture is used system wide. 
						

							Strata DK14
Maintenance and Programming
8Strata DK General Description    6/00
Maintenance and Programming
Hardware maintenance and repair procedures describe how to quickly locate, remove, and replace 
defective parts and PCBs. System programming can be performed without taking the system out-
of-service. 
On-site programming can be executed with any 20-button proprietary LCD telephone or with a 
DKi Admin PC connected to an optional maintenance port. 
Off-site programming with DKi Admin, which can help cut costs and save time, is available 
through a customer-provided modem connected to the maintenance port.
DKi Admin/DKi Backup
Toshiba DKi Admin Release 4.0 software enables customer data (configuration, station, and 
system options) to be downloaded to a PC and stored on a computer disk. The customer data can 
be added to, or changed, using the PC independent of the DK System.
The new customer data can then be uploaded to the DK System from the PC, changing customer 
program options on-site or remotely over telephone lines and/or modems.
The DKi Backup software program is also available. The program consists of a small subset of 
DKi Admin functions which can perform backup, restore and upgrade functions, but cannot edit 
customer databases. 
						

							Strata DK General Description    6/009
Strata DK40i2
This chapter provides an overview of the Strata DK40i Release 4.3 system and its capacities. 
Release 4.3 enables the DK40i to provide Automatic Call Distribution (ACD), E911 CAMA, T1, 
ISDN PRI and BRI U and S/T interfaces.
The Strata DK40i Base Key Service Unit (KSU) is a compact system that provides many of the 
features offered by much larger systems. The KSU is designed for convenient wall-mounting and 
occupies very little space (see Figures 4, 5 and Ta b l e  4.) 
Figure 4 Base Key Service Unit (KSU) Figure 5 KSU with Expansion Unit
Table 4  KSU and Expansion Unit Specifications
UnitWeightHeightWidthDepth
Key Service Base Unit8.4 lbs. 
(3.8 kg)18.0 inches
(457 mm)12.2 inches
(310 mm)3.4 inches
(86 mm)
Expansion Unit1 lb. empty 
(0.45 kg)
4.3 lbs. full 
(2.4 kg)18.0 inches
(457 mm)7.8 inches
(198 mm)3.4 inches
(86 mm)
AC DC
POWER
4247
AC DC
POWER
1711 
						

							Strata DK40i
Base KSU Architecture
10Strata DK General Description    6/00
Base KSU Architecture
The Strata DK40i Base KSU contains the main processor, operating software, circuitry and the 
following components (see Figure 6). 
Figure 6 Base KSU Interior
Digital Telephone Circuits
The main circuit board (TMAU2) in the Strata DK40i Base KSU has eight integrated circuits that 
can connect to Toshiba-proprietary digital telephones (including the cordless telephone), Stand-
alone Data Interface Units (PDIU-DSs), Digital Door Phone/Lock Control Units (DDCB), and 
Digital Direct Station Selection Consoles (DDSS).
Furthermore, each of the digital telephones can support a PC Data Interface Unit (RPCI-DI) or up 
to two Add-on Modules (DADMs).
Central Office (CO) Line Circuits (TCOU/TDDU/TBSU/TBUU)
The following PCBs can be installed in the DK40i Base KSU:

TCOU provides four circuits for loop start CO lines. 

TDDU provides four circuits for Direct Inward Dialing (DID) lines

TBSU provides two circuits for BRI lines or stations (see TBSU below)

TBUU provides two BRI U interface circuits for lines or stations
FG2
POWER SUPPLY ASSEMBLYMODELINPUT: AC127V 2.2A 60 HZOUTPUT: -27.3V 2.8A. -27.3V 0.2A
V. 1A 1996-05 00001TOSHIBA CORPORATIONTPSU16AMADE INWARNINGHazardous voltage inside!If servicing required
remove A. C. plug.
12
+-BATTPN2 12AC DC
DC  POWER
TMAU2AOFF
ON
4238
Connect Expansion
Unit TB1 TO FG2
Expansion KSU
Cable ReceptacleImportant Notice
Battery Jumper
-24 Volt Circuit
BreakersReserve Power
Battery Jack
Base Telephone
Tip/Ring and 
Relay Contact
Music-on-Hold
Input
Music-on-Hold
Sensitivity Adjustment
IMPORTANT: DKSUE16A is incompatible with this unit
DKSUET16A or DKSUE40A  is required for expansion 
						

							Strata DK40i
Base KSU Architecture
Strata DK General Description    6/0011
The CO line interface and DID interface unit can be programmed for DTMF or dial pulse signaling 
and each line has a switch to control potential excess volume that could be created by a nearby 
PBX or CO. Built-in gas tubes help protect each TDDU and TCOU line from lightning. An 
optional RDDU (for DID lines) installed in the Expansion Unit requires an external secondary 
protector. DID lines require the optional K5RCU2 tone receiver.
ISDN BRI S/T Circuits (TBSU)
The TBSU PCB provides two Basic Rate Interface (BRI) circuits for DK40i. The TBSU can only 
be installed in the DK40i Base KSU. 
The TBSU circuits are four-wire S/T type circuits and connect to the PSTN BRI lines using a 
dealer-supplied UL-listed Network Terminator unit (NT1). In Canada, the NT-1 must be CSA 
certified. On the station side, they can connect to S-type ISDN Terminal Equipment (TE) or 
Terminal Adapters (TA).
ISDN BRI U Circuits (TBUU)
DK BRI U interface circuits can be configured to connect to an ISDN line circuit (NT mode, line-
side) or to ISDN U-type terminal equipment TE1 or terminal adapters TA (LT mode, station side). 
The TBUU provides two BRI-U circuits that can be configured independently for line or station 
circuits.
NoteThe TBSU and TBUU contains two circuits, each of which reduces the system capacity by 
two station ports or two CO lines. If the BRI circuit is configured as a station circuit, the 
circuit assumes two station ports. If the BRI circuit is configured as a line circuit, the 
circuit assumes two CO lines. BRI lines can be used for voice and data calls.
Caller ID (TCIU2)
An optional Caller ID PCB (TCIU2) can be added to the four-circuit loop start CO line PCB 
(TCOU) to provide four Caller ID circuits. Local telephone companies do not provide Caller ID on 
DID lines; so the TCIU2 PCB cannot be added to the four-circuit DID PCB (TDDU). Caller ID 
can also be added with the RCIU2 and KCDU2. See “Caller ID Interface Unit (RCIU2)” on Page 
41 and “Caller ID” on Page 69 for more information.
Standard Telephone Interface Unit (KSTU2)
The optional KSTU2 provides four circuits that can interface with DTMF for rotary dial standard 
telephones and other single-line devices, including: Strata AirLink Wireless Base Station Interface 
Adapters (BSIAs) and handsets, fax/modems (14.4 bps max.), Voice Mail and Auto Attendant 
devices, off-premises stations, alternate BGM source and dictation equipment. These devices may 
require that the optional tone receiver (K5RCU or K5RCU2) be installed in the DK40i Base KSU 
to interpret the DTMF signals the above devices may transmit. 
The KSTU2 does not support message waiting lamps on standard telephones. The RSTU2 must be 
installed in the Expansion Unit to support message waiting lamps.
DTMF/ABR Tone Detection Receiver (K5RCU and K5RCU2)
Station users in systems that have the optional K5RCU or K5RCU2 installed can access Automatic 
Busy Redial (ABR) and communicate with devices, such as standard telephones or voice mail 
machines that require DTMF signaling. 
This unit is also required for Direct Inward System Access (DISA) and built-in or external Auto 
Attendant operation, as well as for DID and Tie lines. Each K5RCU or K5RCU2 PCB contains 
five shared receivers. 
						

							Strata DK40i
Expansion KSU Architecture
12Strata DK General Description    6/00
Feature Key (KKYS)
The system can be upgraded with an optional feature key, the KKYS, which installs onto the 
K5RCU PCB in the Base KSU. The KKYS1 provides Automated Attendant (AA); KKYS2 
provides AA and ACD; and KKYS3 provides AA and ACD/MIS.
SMDR, SMDI, ACD/MIS and Maintenance DKi Admin/Modem (TTY) Interface 
(TSIU)
The TSIU PCB provides two RS-232 interface ports (modular jacks) that allow the DK40i system 
to connect to an SMDR Call Accounting device, a DKi Admin PC or external modem for system 
maintenance/administration, ACD/MIS reports using Toshiba’s Insight DK software, or an SMDI 
interface for Voice Mail. It does not have a built-in modem capability.
Only one TSIU can be installed per DK40i system. When the TSIU PCB is installed, the PIOU can 
still be installed for zone paging, control relays, and an SMDR RS-232 interface, built-in (IMDU) 
maintenance modem, ACD/MIS processor or VM SMDI or maintenance interface.
Expansion KSU Architecture
The optional Expansion KSU, which attaches 
easily to the side of the Base KSU, offers four 
universal slots that can host a variety of line and 
telephone PCBs (see Figure 7). See Chapter 4 – 
Universal Slot PCBs for descriptions of PCBs.
Station and Line Capacities
This section shows the maximum basic and CO configurations that are possible with the DK40i. 
There is a variety of configuration combinations of digital and standard telephones with CO lines, 
including loop start, ground start, Tie, and DID lines. Any loop or ground start CO line can be 
equipped with Caller ID. 
The DK40i Base KSU comes equipped with eight digital telephone station circuits. One of four 
optional PCBs can be added to provide either four loop start or DID lines, or two ISDN BRI S/T or 
U circuits. Another optional TCIU2 PCB can be added to the Base KSU loop start line PCB to 
provide Caller ID interface. An optional KSTU2 PCB can be added to provide four standard 
telephone circuits (ports).
An optional Expansion KSU can be added to the DK40i to increase the system capacity to 28 
station ports and 12 CO lines (see Figure 5). A maximum of 28 station ports and 12 CO line 
interfaces are allowed in the system (Base KSU plus Expansion KSU). Base capacity is 12 station 
ports and 4 CO line or 2 BRI circuit interfaces.
Expansion 
PCB SlotsStrata DK40i
Expansion KSU
Expansion Cover Side
CoverStrata DK40i
Base KSU
4243
Figure 7 Expansion KSU Interior 
						

							Strata DK40i
Station and Line Capacities
Strata DK General Description    6/0013
Ta b l e  5 shows maximum capacity for a DK40i system. DKi Quote, an auto quote program that 
runs on a PC with Microsoft® Windows®, is available from Toshiba to generate DK40i quotes 
and configurations. Also, refer to the Strata DK Installation and Maintenance (I&M) Manual, 
Chapter 2 – DK40i Configuration, for more information. 
Table 5 Maximum CO Lines/Ports and BRI Line and Station Circuits
Attaining maximum system capacities depends on power consumption of a particular 
configuration (see Ta b l e  6). Power factor calculations in accordance with the Strata DK I&M 
Manual will determine if the maximum capacities in these tables can be reached.
The DK40i Base and Expansion cabinets provide an extensive number of features for a telephone 
system of its size. See Table 40 on Page 109 for a list of  DK40i, Release 4.3 features and 
capacities.
ISDN BRI Lines
Stations can be a combination of ISDN TE-1 and TA S-type devices and digital, electronic or 
standard telephones. CO line combinations include ground or loop start, DID, Tie or ISDN BRI. 
Each BRI line circuit uses up two CO lines at system capacity. All other line circuits use up one 
CO line of system capacity.
Each BRI station circuit uses up to two station ports of system capacity. All other station circuits 
use up one station port of system capacity.
HardwareMaximum 
Allowed
CO Lines 12
Station Ports 28
BRI Line Circuits 6
BRI Station Circuits 10
Table 6 DK40i Station and Line Capacities and Universal Printed Circuit Board Slots
Lines and PCB SlotsDK40i
Universal slots
1
1. There are four universal slots in the DK40i expansion unit.4
1
Stations2
2. Line and station capacities cannot exceed 28 stations and/or 12 CO lines. Incremental capacities depend on the type 
of station/line PCBs installed. All increments are not available with all PCB types.8~28
2
CO lines – loop start 0, 2, 4, 8 or 123
3. Increments vary and depend on the type of line PCBs installed.CO lines – ground start 0, 2, 4, 8 or 12
3
DID lines (analog)4
4. In the D40i, DID and Tie, lines do not use up station ports as in DK40, R3.1 and the DK424 R3.2. Each BRI line 
circuit uses up to two CO lines of system capacity and no station ports.0, 2, 4, 8 or 12
3
Tie lines (analog)30, 2, 4, 8 or 123
T1 lines 8 or 12 channels/lines
ISDN BRI line circuits (S/T type and/or U type)
5
5. Each S/T type circuit requires an NT-1 device when connected to a Central Office BRI line circuit.2, 4 or 6 circuits (12 B-channels/lines)
3
ISDN PRI line circuits 8 or 12 channels/lines
Squared System Maximum (ground/loop lines + stations) 12 lines + 12 stations
Squared System Maximum (Tie/DID lines + stations) 12 lines + 12 stations 
						

							Strata DK40i
Peripherals
14Strata DK General Description    6/00
Table 7 Typical Maximum Capacity Examples with ISDN BRI (S/T and/or U-type) Circuits
Peripherals
The DK40i Base KSU can support a number of peripherals, which are not considered as stations or 
lines and do not affect the maximum station and line capacities. The DK40i Base KSU comes 
standard with built-in interfaces for connecting the following dealer-supplied equipment: an 
amplifier and speaker for paging and night ringing, Music-on-Hold (MOH) source, reserve power 
batteries, and emergency standard telephone for system power failure occurrences when using 
loop start lines in the base cabinet.
A relay contact is also provided to control one of the following peripherals: MOH source, night 
bell, or page amplifier mute control.
An optional KSTU2 PCB provides an alternate background music source interface. The music 
plays through Toshiba telephone speakers, as opposed to the external page speakers. 
The optional TSIU PCB provides two RS-232 interface ports to connect two of four options: a 
DKi Admin PC (or external modem for remote maintenance); or VM SMDI, ACD/MIS or an 
SMDR port to connect a call accounting device or printer. An Expansion Unit RS-232 interface 
PCB is required if all four features are needed.
BRI Station 
Circuits1
1. Each BRI circuit (S/T and/or U-type) provides two B channels plus one D channel. Each (S/T) 
BRI station circuit allows up to two TE-1 and TA devices to share the BRI B channels (two 
simultaneous calls maximum per BRI circuit.). Each BRI-U circuit supports one TE-1 or TA 
device.
Other Station 
Circuits3
3. Other stations include Toshiba digital and electronic telephones, or attendant consoles, standard 
telephones and devices.
BRI Line 
Circuits4
4. BRI S/T circuits are available with TBSU and RBSU/RBSS PCBs and BRI-U circuits are 
available with TBUU and RBUU/RBUS PCBs. Each BRI line circuit (S/T or U) provides two 
BRI CO lines (B channels) for incoming/outgoing calls.
BRI Line
B channelsOther Line 
Circuits5
5. Other lines include analog and digital (T1 or PRI) loop start, ground start, DID, and Tie lines.10
2
2. Maximum BRI line capacity. BRI station circuits do not use up CO line channels and vice versa. 
Also, station circuits use 2B + 1D channel; lines use one B channel which enables one BRI 
circuit to provide two lines.8612 0
81248 4
61648 4
420612 0
42048 4
22424 8
02800 12