Toshiba Strata Dk14, Dk40i, Dk424i General Description Manual

							Appendix – General Specifications
Station Specifications
Strata DK General Description    6/00125
Station Specifications
Table 46 Station Loop Requirements
DeviceNo. of Wire Pairs
(24 AWG twisted pair)Max. Loop 
Resistance 
(includes device)Max. Distance
(KSU/Cabinet to Device)
Digital telephones1
DDSS consoles
PDIU-DS
DDCB
1. Two-pair wiring or optional telephone power supply is required to achieve maximum range with DADM, OCA, 
Headset, or DIU.
1-pair
40 ohms 1000 ft. (303 m) HDCB
2-pair
Attendant Console (DK424i and 
DK424 only, except RCTUA)
RATI (DK424 and DK424i only, 
except RCTUA)1- or 2-pair
Electronic telephones 2-pair; 3-pair for OCA
RPCI-DI or PDIU-DI2
Shares digital telephone 
wire-pair
1DADM
HDSS consoles 2-pair 20 ohms 500 ft. (152 m)
Standard telephones, voice mail, 
AA, etc.1-pair300 ohmsApprox. 3000 ft. (909 m) with 
150 ohm device.
2
2. See manufacturer’s product specifications for exact resistance of device.
600 ohmsApprox. 9000 ft. (2727 m) 
with 150 ohm device.2
1,200 ohmsApprox. 21000 ft. (6363 m) 
with 150 ohm device.2
BRI-TE1 (S or U type)3
3. ISDN station devices (telephones, fax machines, modems, etc.) are classified as Terminal Equipment (TE-1) or 
Terminal Adapters (TAs). There are generally two models available for each particular device: S-type or U-type.
4-pair modular 100 ohms1650 ft.
BRI-TA (S or U type)31650 ft. 
						

							Appendix – General Specifications
Station Specifications
126Strata DK General Description    6/00
Table 47 Station Dimensions 
DeviceHeightWidthDepth
10-button Digital Telephone with Handsfree Answerback (DKT2010-H)3.3 inches
(85 mm)
17.8 inches 
(199 mm)9.0 inches 
(230 mm)
10-button Digital Telephone with Speakerphone and Liquid Crystal 
Display (DKT2010-SD)3.8 inches 
(97 mm)
17.8 inches 
(199 mm)9.0 inches 
(230 mm)
20-button Digital Telephone with Speakerphone (DKT2020-S)3.3 inches
(85 mm)
17.8 inches
(199 mm)9.0 inches 
(230 mm
20-button Digital Telephone with Speakerphone and Liquid Crystal 
Display (DKT2020-SD)3.8 inches 
(97 mm)7.8 inches 
(199 mm)9.0 inches 
(230 mm)
20-button Digital Telephone with Speakerphone and Liquid Crystal 
Display (DKT2020-FDSP)3.8 inches 
(97 mm)7.8 inches 
(199 mm)9.0 inches 
(230 mm)
Digital Single Line Telephone (DKT2001)3.8 inches 
(97 mm)
15.4 inches 
(137 mm)9.0 inches 
(230 mm)
Add-on Module (DADM)3.3 inches
(85 mm)2.8 inches 
(71 mm)9.0 inches 
(229 mm)
Direct Station Selection (DSS) Console3.3 inches
(85 mm)7.8 inches
(199 mm)9.0 inches
(230 mm)
Stand-alone Data Interface Unit (PDIU-DS)1.5 inches 
(38 mm)4.8 inches 
(122 mm)7.3 inches 
(185 mm)
External Speaker Amplifier (HESB)10.3 inches 
(263 mm)10.3 inches 
(263 mm)5.0 inches 
(128 mm)
Door Phone/Lock Control Unit (DDCB)4.6 inches 
(117 mm)5.5 inches 
(140 mm)1.5 inches 
(38 mm)
Door Phone (MDFB)5.5 inches 
(140 mm)3.1 inches 
(79 mm)1.3 inches 
(33 mm)
Attendant Console Interface (RATI) (DK424 only)1.5 inches
(38 mm)4.8 inches
(122 mm)7.3 inches
(185 mm)
Handset with Handset Cradle (RATHC) (DK424 only)2.8 inches
(70 mm)2.8 inches
(70 mm)9.5 inches
(241 mm)
Strata AirLink Wireless Telephone Handset6.0 inches
(152 mm)2.3 inches
(58 mm)1.0 inches
(25 mm)
DKT2104-CT Digital Cordless TelephoneHeightWidthDepth
Base (without antenna)2.5 inches 
(64 mm)4.5 inches 
(115 mm)7.5 inches 
(190 mm)
Charger Base3.25 inches 
(83 mm)3.75 inches 
(95 mm)4.625 inches
(118 mm)
Handset (with antenna)8.75 inches
(222 mm)2 inches 
(51 mm)1.5 inches
(38 mm)
Charger Base with handset9.5 inches
(241 mm)3.75 inches
(95 mm)4.625 inches
(118 mm)
DKT2004-CT Digital Cordless TelephoneHeightWidthDepth
Base (without antenna)3.7 inches 
(95 mm)5.0 inches 
(128 mm)7.5 inches 
(190 mm)
Handset (with antenna)1.1 inches
(27 mm)2.2 inches 
(55 mm)8.3 inches
(210 mm)
Base with handset (with antennas)8.7 inches
(221 mm)5.4 inches
(137 mm)8.8 inches
(223 mm)
1. 4.1 inches (105 mm) with handset. 
						

							Appendix – General Specifications
Station Specifications
Strata DK General Description    6/00127
Table 48 System Tones
CO Line
Idle digital and electronic 
telephonesRing Tone Options 1 2 3
All tones are interrupted 
at 10 Hz
1-sec. ON – 3 sec. OFF Direct Ring Call 500/640 Hz 1200/1500 Hz 800/1000 Hz
Ring Transfer Call 540/760 Hz 1300/1780 Hz 860/1180 Hz
Busy station (queuing) to DKT/EKT2400 Hz, interrupted at 10 Hz, 1 sec. ON – 3 sec. OFF
(twice or continuous 4 sec. apart)
Busy station transfer (camp-on) to DKT/EKT2400 Hz, interrupted at 10 Hz, one-time 1 sec. tone burst
(twice or continuous 4 sec. apart)
Standard telephone or voice mail port 20 Hz
Normal ring option 1 sec. ON – 3 sec. OFF
Camp-on tone options to standard telephoneNo tone or two 160 msec. bursts of 1209 Hz 160 msec. apart, twice, 3 sec. 
apart
Distinctive ring option (standard telephone) 0.4 sec. ON – 0.2 sec. OFF – 0.4 sec. ON – 3 sec. OFF
Tie or DISA line calls
To busy station 480/620 Hz, 0.50 sec. ON – 0.50 sec. OFF
Internal [DN] Calls (except for DKT-2004-CT)
Tone first (EKT/DKT ring signal) 500 Hz, 1 sec. ON – 3 sec. OFF (twice or continuous)
Door phoneA & C 870 Hz, 1 sec./710 Hz, 0.5 sec. twice per ring (1 or 5 rings)
B 870 Hz, 0.5 sec./710 Hz, 0.5 sec. twice per ring (1 or 5 rings)
Alert Signal to idle telephone Six - 160 msec. burst of 350/440 Hz, twice 1 sec. apart
Alert Signal to busy telephone 2400 Hz, interrupted at 10 Hz, 1 sec. ON, twice, 1 sec. apart
Busy station transfer (camp-on) to DKT/EKT2400 Hz, interrupted at 10 Hz, one-time 1 sec. tone burst
(twice or continuous 3 sec. apart)
Busy Override/DND Override 2400 Hz, 1 sec. ON – 3 sec. OFF (twice or continuous 3 sec. apart)
Dial Tone (internal) 350/440 Hz, continuous
Ringback Tone 440/480 Hz, 1 sec. ON – 3 sec. OFF (once: voice first; continuous: ring first)
Busy Tone 480/620 Hz, 0.5 sec. ON – 0.5 sec. OFF
Reorder Tone 480/620 Hz, 0.25 sec. ON – 0.25 sec. OFF
Do Not Disturb 480/620 Hz, 0.125 sec. ON – 0.125 sec. OFF
Voice Page Warning 500 Hz, 1 sec. ON (via DKT/EKT telephone speaker)
Speaker OCA Warning 500 Hz, 1 sec. ON only (via DKT/EKT telephone speaker)
Handset OCA Warning 350/440 Hz, 0.5 sec. (via DKT handset)
Executive/Privacy Override Warning 440 Hz, 1 sec. ON only (via handset or speaker)
Hold Recall 2400 Hz, interrupted at 10 Hz, 1 sec. ON – 1 sec. OFF
Standard telephone ringing 20 Hz, 1 sec. ON – 3 sec. OFF
Standard telephone Busy Override 160 msec. burst of 1209 Hz, twice, 3 sec. apart
Standard telephone Camp-on tone Two 160 msec. bursts of 1209 Hz, 160 msec. apart, twice, 3 sec. apart
Voice Mail Special Tones
Answer: DTMF “A”
80 or 160 msec., dual tone Disconnect: DTMF “D”
Recall: DTMF “B”
Special Confirmation Tones
Verified Account Code 
confirmation tones (sent 
only to the station that 
enters the code, not to the 
outside party)Code valid 350/440 Hz, 0.5 sec. ON
Code not valid 350/440 Hz, 0.125 sec. ON – 0.125 sec. OFF – 0.125 sec. ON
Station option programming confirmation tones 
(Call Forward, Timed Reminders, etc.)350/440 Hz, 1 sec. ON
ACD
Supervisor Monitoring Tone 350/440 Hz, 0.5 sec. every 15 sec.
Queue AlarmsAlarm 1 2400 Hz, interrupted at 10 Hz, 1 sec. ON – 0.5 sec. OFF
Alarm 2 2400 Hz, interrupted at 10 Hz, continuous 
						

							Appendix – General Specifications
Station Specifications
128Strata DK General Description    6/00
Table 49 Subassemblies for Toshiba Telephones
Table 50 Standard Telephone Ringer Specifications
SubassemblyHost TelephoneFunctionCapacity per 
Telephone
DVSU
1
1. Only one of the following subassembly types is allowed per telephone: DVSU, RPCI-DI or DADM.2000- and 1000-series 
Digital TelephonesProvides interface for digital telephone to 
receive Speaker OCA. Not required for 
Handset/Headset OCA.
1 RPCI-DI
12000-series Digital Telephones Provides two modes of operation:
TAPI PC application interface and Data 
Calling interface.
HVSU2 6500-series 
Electronic TelephoneProvides interface for electronic telephone 
to receive OCA.
HHEU 2000- and 1000-series Digital 
Telephones. 6500- and 6005-
series Electronic TelephonesProvides interface for headset and Loud 
Ringing Bell to telephone. Can be installed 
with DVSU, RPCI-DI, or DADM.
DADM
12000-series Digital Telephones Provides telephone with 20 (or 40 with two 
DADMs) additional feature buttons for 
DSS, System or Station Speed Dial, or CO 
line appearances.1 or 2
Standard Telephone Ring Voltage QSTU2  or PESU (Circuits 1 and 2)
Square wave output with high/low option jumper:
Low position 130 
± 20VDC peak-to-peak (no-load)
High position, 190 
± 25VDC peak-to-peak (no-load)
Ringing capability 2 ringers maximum per circuit, high or low position
KSTU2
Ring voltageSquare wave output with high/low option jumper:
Low position 130 
±20VDC peak-to-peak (no-load)
High position, 190 
±25VDC peak-to-peak (no-load)
Ringing capability 2 ringers maximum per 
circuit, high or low positionRinging capability
RSTU2 or RDSU
Ring voltage 80V RMS sine wave
Ringing capability 1.5 REN per circuit, with or without Message Waiting
RSTU2 Message Waiting voltage -90 VDC/one telephone per circuit (max.)
RSTU2 or PESU modem interface data rate 14,400 bps maximum 
						

							Appendix – General Specifications
Station Specifications
Strata DK General Description    6/00129
Table 51 Data Interface Specifications 
ItemSpecifications
Terminal or personal 
computer interface 
specificationRS-232C (EIA)
V.24/V.28 (CCITT)
TAPI compatible (RPCI-DI only)
Data transmission speed Up to 19.2 kbps, asynchronous
Flow control Half and full duplex, utilizing RTS/CTS/CD control leads
Automatic dialing Based on AT commands:

Data speed of AT command is 300, 600, 2300, 2400, 4800, or 9600

Data bit: 7 or 8 bits

Stop bit: 1 or 2 bits

Parity bit: even, odd, or no parity
Maximum distance: KSU to 
DKT with integrated RPCI-
DI or stand-alone DIU

With system power supply; 1000 feet with 2-pair (24 AWG)

With battery back-up; 330 feet with 1-pair or 675 feet with 2-pair (24 AWG), or 
1000 feet with external power to telephone
Number of wire pairs 1-pair or 2-pair (24 AWG)
LED indicators (stand-alone 
DIU only)Power: lights when power is on
Ready: lights when DTE and DIU are ready
Connect: lights when DIU is in transmission or ringing mode
Automatic disconnect time-
outForced hang up when RPCI-DI or PDIU does not detect data on SD or RD within 
nine minutes.
LSI technology (RPCI-D1/
PDIU-DS only)

One-chip CPU with a clock frequency of 12.288 MHz

Memory: ROM, 16KB; RAM, 512KB

Ping-pong transmission: LSI with bearer transmission rate of 512kbps, 
2B+D-type link
Strata DK option 
compatibilityDigital telephones with integrated RPCI-DI:

No DVSU (Speaker Off-hook Call Announce only)

No Add-on Module

Compatible with associated DDSS console

Compatible with headset (HHEU)

Desktop or wall mount compatible
Cabling/connectors

RPCI-DI, PDIU-DS to DTE/DCE device: 9-wires, 50 feet maximum, 24AWG: 
compatible with RJ45, 8-wire modular cable and RJ45 to DB25 RS-232 
modular adaptors

Stand-alone DIU: RJ11 modular connector

Integrated RPCI-DI: connected inside digital telephone

Stand-alone DIU jumper plugs enable straight wire connection to a DTE or 
DCE device without null-modem cables or adaptors 
						

							Appendix – General Specifications
Station Specifications
130Strata DK General Description    6/00 
						

							Strata DK General Description    6/00131
Glossary
Term Definition
AAAuto Attendant (built-in or external). This feature acts as an automatic operator that directs 
incoming callers to stations by offering a menu of dialing prompts.
ABRAutomatic Busy Redial.
ACBAutomatic Callback.
ACDAutomatic Call Distribution. Allows incoming calls to be distributed to a group of ACD agents. 
The ACD Supervisor’s LCD telephone displays ACD Agent and Group information which 
allows the Supervisor to monitor calls and assist agents.
ADM Add-on Module—See DADM.
AMIAlternate Mark Inversion.
ANIAutomatic Number Identification—Telephone number of the calling party is sent to the Strata 
DK system over incoming DID or Tie lines. This feature is provided by some long distance 
telephone service companies.
B-channelUsed in ISDN. Data or voice information is transmitted on the B-channels of an ISDN line at 
64kpbs. The B-channel refers to the frequency range of transmissions on a copper pair; it is a 
logical, rather than physical channel. Also see BRI and PRI.
B8ZSBipolar 8 Zero Substitution.
BGM Background Music—Allows customer-supplied music to be sent to telephone speakers and 
external speakers.
BLFBusy Lamp Field.
BPS Bits Per Second—Unit of measure that refers to the transmission speed (baud rate) of 
electronic signals. It is used when describing the Data Interface Unit and modem operation.
BRIBasic Rate Interface—ISDN line with 2B + 1D channel. BRI lines can have a U-interface with 
RJ11 jacks and single twisted pair wiring, or RJ45 four pair S/T interface wiring. BRI is the a 
smaller ISDN interface than PRI.
BSIABase Station Interface Adapter–Interface between the Strata Airlink™ Wireless Telephone 
Base Stations and the host telephone system.
CESID Caller’s Emergency Service Identification—The number used to identify the calling terminal 
within the context of the emergency service system.
CLASS Custom Local Area Signaling Services—Defines a number of features offered by local 
telephone companies.
CLID or CND Calling Line Identification or Calling Number Delivery—Telephone number or name of the 
calling party sent to the Strata DK system over incoming ground or loop start CO lines. This 
feature is one of the “CLASS” features offered by some local telephone companies. 
						

							Glossary
CO
132Strata DK General Description    6/00
CO Central Office—The facility which houses switching equipment that provides telephone 
service (CO lines, E & M Tie lines, DID lines, Centrex lines, etc.) for the immediate 
geographical area.
CODECs Coder/Decoder—Semiconductors that allow the system to process analog-to-digital and 
digital-to-analog conversions.
CSUChannel Service Unit. Required between the DK PRI interface and the PRI line provider 
interface in most locations of the U.S.
CNISCalling Number Identification Services—Caller ID for ISDN. CNIS is calling party information 
for outgoing and incoming calls sent to the ISDN network. 
DADM Digital Add-on-Module—Optional device that connects to 2000-series digital telephones to 
provide the telephones with 20 flexible feature buttons that can be assigned individually for 
Direct Station Selection, System and Personal Speed Dial, and CO line access.
D-channelUsed in ISDN. This channel transmit call control information (out-of-band signaling) for B-
channels. The D-channel is a logical, not physical channel. 
DDCB Digital Door Phone/Lock Control Unit—A peripheral hardware unit compatible with 
designated digital telephone circuits that supports optional door phones (MDFBs) and 
provides door lock control.
DDSS Digital Direct Station Selection Console—A device that helps facilitate the processing of a 
heavy load of incoming calls. The DDSS connects only to designated digital telephone 
circuits, and is associated with a digital telephone.
DHDistributed Hunt.
DID Line Direct Inward Dialing line—Allows external callers to dial directly to an internal number.
DILDirect In Line—Refers to two-way, standard CO trunk lines that are assigned to a particular 
extension or hunt group.
DISA Direct Inward System Access—Enables an outside party to access the  Strata DK system 
internal stations or outgoing CO lines without having to go through an operator or automated 
attendant. An optional security code may be set to prevent unauthorized access to outgoing 
CO lines for through system calling.
DKTDigital Key Telephone.
[DN] Directory Number.
DNIS Dialed Number Identification Service—Telephone number of called party is sent to the Strata 
DK over incoming DID or Tie lines. This feature is provided by some long distance telephone 
companies.
DSS Direct Station Selection—Enables a telephone user (as well as a DSS console and ADM 
user) to call another station with the touch of a flexible feature button.
DTMF Dual-tone Multi-frequency—Push-button tone dialing.
DVSU A subassembly that equips a digital telephone with the capability to receive Speaker Off-hook 
Call Announce (OCA) calls. DVSU is not required to receive Handset OCA (HS-OCA).
EKTElectronic Key Telephone.
ESFExtended Super Frame.
FIFOFirst-In, First-Out.
HDCB Electronic Door Phone/Lock Control Unit—A peripheral hardware unit compatible with 
designated electronic telephone circuits that supports optional door phones (MDFBs) and 
provides door lock control.
Term Definition 
						

							Glossary
HDSS
Strata DK General Description    6/00133
HDSS Electronic Direct Station Selection Console—A device that helps facilitate the processing of a 
heavy load of incoming calls. The HDSS console connects only to designated electronic 
telephone circuits, and is associated with electronic telephones.
HESB External Speaker Box—A speaker/amplifier that can be configured with the system to provide 
a variety of functions, such as a paging speaker and/or Background Music (BGM) speaker.
HHEU Headset/Loud Ringing Bell Interface—Subassembly that fits inside a digital telephone or a 
6500-series electronic telephone to allow a headset or an external speaker box (HESB) to be 
connected to the telephone.
ISDNIntegrated Services Digital Network. ISDN service requires service subscription from a telco 
with ISDN equipment. It allows digital information to be exchanged directly at each end of the 
line, without the need to convert analog to digital signals. Connection speeds are faster and 
audio quality is superior.
LATALocal Access and Transport Area.
LCD Liquid Crystal Display—The optional display on digital and electronic telephones that 
displays calling information.
LCR Least Cost Routing.
LSI Large Scale Integration—Related to circuit design technology. Strata DK system printed 
circuit boards (PCBs) use LSI circuit design.
MDF Main Distribution Frame—The wiring frame usually located in a phone closet.
MDFB Door Phone Box—A peripheral two-way speaker box option.
MOH Music-on-Hold—Customer-supplied music or announcements can be sent to parties on-hold 
on CO lines or the intercom. 
NFASNon-facility Associated Signaling—provides the ability to create ISDN trunk groups beyond 
the 23 channels available with a single Primary Rate Interface.
NT-1Used in ISDN. Network Termination device that powers a U-interface ISDN line and enables 
multiple S/T ISDN devices to connect to it. The NT-1 must be UL-listed (U.S.) or CSA-certified 
(Canada).
OCA Off-hook Call Announce. There are two types: Handset OCA and Speaker OCA.
PBX Private Branch Exchange—Industry-standard term which refers to a telephone switch, 
usually on-premises, which serves an individual company, and is connected to a public 
telephone exchange through the Central Office (CO).
PCB Printed Circuit Board.
[PDN] Primary Directory Number.
PFPower Failure.
[PhDN] Phantom Directory Number.
PRIPrimary Rate Interface—A trunk interface to the ISDN network, which enables multiple use of 
channels for DID, Tie, FX, WATS, 800, etc. It supports multiple services and dynamic channel 
allocation. PRI is the larger ISDN interface (via the RPTU) with 23B+D transmission format. 
Channels are 64-kbps. Also see BRI.
PSAPPublic Safety Answering Point—Used for E911 calls. 
RAM Random Access Memory—Refers to the type of system memory that holds individual system 
configuration and feature programming. RAM is read/write memory, and can be easily 
revised in programming.
Term Definition 
						

							Glossary
ROM
134Strata DK General Description    6/00
ROM Read Only Memory—Refers to the type of system memory that holds static software that 
comprises the mechanics of the features’ functions. ROM is only revised by Toshiba software 
engineers.
[SDN] Secondary Directory Number.
SFSuper Frame.
SLTSingle-line Telephone.
SMDI Simplified Message Desk Interface—RS-232 link from PIOU, PIOUS, RSSU, RSIS, or RSIU 
modular jack connected to a voice mail machine to provide Strata DK voice mail integration.
SMDRStation Message Detail Reporting.
SMIS Software Management Information System (SMIS).
S/T InterfaceReference interface points (“S” or “T”) of an ISDN network. S/T interfaces are 
RJ45, 8-wire connection interfaces for ISDN equipment. An NT-1 is needed to network U-
type BRI lines to S/T type interfaces. 
TA P ITelephone Application Programming Interface.
TATerminal Adapter or ISDN modem that converts PC and other types of protocol into a signal 
that works with ISDN. Generally, TAs support RJ11 voice ports and RS-232C or V.35 or 
V.449 data interfaces.
TETerminal Equipment. This refers to devices using ISDN service (telephones, faxes, 
computers, etc.). TE1 supports ISDN formats with S/T or U-type interfaces.
TSPITelephony Service Provider Interface.
U InterfaceA single twisted pair of copper wire on an RJ11 jack. The wiring is identical to POTS, with 
different signaling. Only one U-interface device can be attached per line.
Term Definition