Toshiba Strata Dk14, Dk40i, Dk424 General Description Manual

							Features
System Features
Strata DK General Description    5/9977
Primary Directory Number [PDN]
Each station in the Strata DK has a unique [PDN]. This [PDN] can appear on multiple buttons (up 
to four) of the primary station.
Secondary Directory Number [SDN]
When the [PDN] of a station appears on another station, it becomes an [SDN]. Any [PDN] can 
appear as an [SDN] on all other Toshiba telephones in the system. A [PDN]/[SDN] can ring on up 
to 120 telephones in the system. Each telephone can be assigned up to four of the same [SDN]. The 
maximum number of [PDNs] plus [SDNs] on each telephone is 16.
Phantom Directory Number [PhDN]
This is an additional [DN] that can be dedicated to a station or to a group of stations (usually in the 
same area or department). Each unique [PhDN] can only appear once on a given telephone, but 
each telephone can be assigned up to eight different [PhDNs].
Any [PhDN] can appear on all Toshiba telephones in the system. A [PhDN] can ring on up to 120 
telephones in the system. Each [PhDN] must be assigned to a designated telephone owner via 
system programming.
Each [PhDN] is flexibly assigned to an owner telephone in system programming. Only [PhDN] 
owner telephones have the following privileges:
©Set Call Forward for [PhDNs]
©Set Call Forward Mailbox destination for [PhDNs]
©Receive Message Waiting (MW) indication for up to four [PhDNs] on individual Phantom 
Message Waiting [PhDN/MW] LEDs
©Receive OCA when the [PhDN] is called
Figure 17 Multiple Directory Number Example
Notes
lIncoming calls come in to a telephone’s [PDNs] from the top down to prevent “call collisions.” 
For example, incoming calls to Stations 200’s [PDN] will first ring the top “200-1” line, a 
second call will ring “200-2” below it, and a third call will ring “200-3.” Auto preference to 
200-3 200-2 200-1 201-2
201-1500
MW/500
501 504
Station 200s [PDNs]
[SDNs] of Station 201
Station 200 can originate or 
answer calls for Station 201 
by pressing [201-1] or [201-2].
[PhDNs] 
Station 200
201-2 201-1 200-3 200-2
200-1500 501 508
Station 201
0554 
						

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System Features
78Strata DK General Description    5/99
select a [DN] to make a call by going off-hook is from the bottom [PDN] up. This avoids 
answering an incoming call while attempting to originate a call.
lEach [PhDN] can have a dedicated Message Waiting [PhDN/MW] LED/button to notify the 
[PhDN] owner telephone user that there is a message for the person or department associated 
with the [PhDN]. Up to four [PhDNs/MWs] can be programmed onto the flexible buttons of 
each telephone. In the above example, [MW/500] is the Message Waiting button for [PhDN 
500].
lA station [PDN] shows busy on Busy Lamp Field when the station is in DND mode or off-
hook on any [DN], CO line or Tie line. [PhDNs] do not display Busy Lamp indication.
l[PhDNs] are usually associated with a function such as an “800” number for a Technical 
Support Group; whereas a specific [PDN] is usually associated with a person, for example, 
Station 200 is assigned to Steve, Station 201 is for Susan, etc.
Multiple FCC Registration
The DK14 and DK40i can be configured as either a key or hybrid system with separate FCC 
registration numbers for each type. The DK424 can be configured as either a key, hybrid, or PBX 
system with separate FCC registration numbers for each type. 
Multiple registration ensures compliance with FCC regulations, regardless of how the system is 
configured. The appropriate configuration for an individual system depends on its function. 
Systems configured only for manual selection of lines via line buttons may be registered as key 
systems; systems with Automatic Line Selection, LCR, 
3RROHG/LQH buttons, etc., usually must 
be registered as hybrid or PBX systems.
Music-on-hold (MOH)
A customer-supplied radio, tape player, tuner, compact disc player, or other device can be used to 
send music or announcements to parties on-hold on CO lines or on [DNs].
Night Ringing Over External Page
Incoming line or door phone calls can be programmed to ring over an external speaker when the 
system is in the Night mode. The call can be picked up from any telephone. After-hours employees 
who are not near a ringing telephone can easily answer calls with this feature.
Night Ringing Over Selected Page Zones
Lines can be programmed to night ring over four selected PIOU Page zones via customer-supplied 
paging equipment. Programmed lines can be divided into tenant groups which can then be 
assigned to night ring over the selected zones:
©DK40i supports two tenant groups
©DK424 supports two tenant groups with RCTUA; all other processors support four tenant 
groups
Non-blocking Talk Paths
All outside lines and internal [DN] lines can be used at the same time.
Off-premises Station
Off-site standard telephones can be part of the system, having access to many of the features 
offered by the Strata DK. Each off-site station requires a special line from the CO. 
						

							Features
System Features
Strata DK General Description    5/9979
Outgoing Call Restriction
Stations can be selectively restricted from originating calls over any number of lines. The same 
stations can receive incoming calls on those restricted lines.
Pooled CO Line Button
Several lines can be pooled to appear under one digital telephone, electronic telephone CO /LQH 
button. The lines are usually pooled in categories, e.g., WATS lines in one pool, regular lines in 
another, etc. Pooled and single-appearing line buttons are designed for use with loop and ground 
start lines, not DID, Tie, DNIS, or ANI lines.
Power Failure Transfer
CO line(s) can be switched directly to dedicated standard telephones (customer-provided 2500- or 
500-type) for incoming and outgoing calls in the case of a system power failure. The number of PF 
telephones available depends on system configuration. Refer to the appropriate configuration 
chapter in the Strata DK Installation & Maintenance Manual
.
During normal operation with AC power, in the DK14 or DK40i Base KSU, the PF telephone 
connected to the base KSU PF jack does not function.
In the DK424 and the DK40i Expansion Unit, PF telephones connected to DPFT/RSTU2 do 
function as a normal standard telephone with all the Strata DK available features, when operating 
with normal AC power.
During a power failure, the following connections are made:
©DK14 
– one CO line is connected directly to the PF phone.
©DK40i 
– in the Base KSU, one CO line is connected directly to the PF phone (up to eight more 
can be added in the Expansion Unit).
©DK424
 – in the DK424, multiple CO lines can be switched. If AC power is lost, the PF 
telephones are automatically/directly connected to a pre-wired CO lines.
PF transfer requires an external unit called the Power Failure Transfer Unit (DPFT) and the 
RSTU2 PCB on the DK424 and in the DK40i Expansion KSU (if more than one PF telephone is 
needed). Each DPFT provides interface for eight power failure telephones. 
An RSTU2 PCB is required to supply the DPFT with a -24VDC control signal and ground 
connections.
Privacy/Non-privacy Calling
This feature applies to CO /LQH buttons only and does not apply to [DNs]. Outside CO /LQH 
buttons can be Private or Non-private on a station-by-station basis. Private lines prohibit users 
from pressing a common CO 
/LQH button and accessing a line that is already in use, whereas users 
can do so on Non-private lines. 
Private line users can change the mode with a 
3ULYDF\5HOHDVH button, enabling as many as 
three stations (total) on a line. Non-private users can block access to their lines with a 
3ULYDF\ 
button.
Relay Service
The DK14 KSU and DK40i Base KSU provide one relay contact to provide the functions listed 
below. For the DK40i and DK424, the PIOU, PIOUS, and PEPU PCBs each have two pairs of 
relay contacts that can each be programmed for one of the following two functions.  
						

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80Strata DK General Description    5/99
External Page/Door Lock Control
©External Page is a Page over external speakers will mute BGM that is being broadcast over 
the same speakers.
©Door Lock Control Relay requires PIOU or PIOUS relays. Only the PIOU and PIOUS relays 
will open a customer-supplied door lock for three or six seconds when a designated button is 
pressed on selected telephones.
Night Relay/Hold Relay
©Night Relay enables answering machine or a night bell (or chime) will be activated when a 
call rings in during the Night mode.
©Hold Relay enables an MOH source will turn on only when calls are placed on-hold.
Remote Administration/Maintenance
See “System Program Administration Software (DKAdmin)” on Page 83.
Reserve Power
Customer-supplied 12-volt batteries (gel-cell and maintenance free) can be connected to the 
system power supply as a power failure backup. 
If there is a power failure, Strata DK automatically switches over to battery power without any 
interruption to operation. A built-in charger circuit keeps the batteries charged during normal 
system operation. 
Reserve power duration depends on the condition of the batteries and the system load, and is 
specific for each Strata DK model. Reserve power batteries must be fully-charged, connected, and 
tested before a power failure occurs.
©DK14
 – see “Power Supply” on Page 4
©DK40i
 – see “Power Supply” on Page 13
©DK424
 – see “Power Requirements” on Page 26
Simplified Message Desk Interface (SMDI)
This feature provides system integration between the Strata DK and the Toshiba Stratagy and VP 
voice processing systems.
SMDI is a standard (RS-232 serial) link; its protocol was developed by Bellcore and is used by 
many PBX and Central Office telephone systems to integrate with voice mail systems. SMDI does 
not support Strata DK DNIS mail box routing. SMDI interface requires that the Strata DK have a 
WSIU, TSIU, PIOU, PIOUS, RSSU, or RSIU PCB installed.
By using this standard integration method, a Strata DK has the flexibility to integrate with a wide 
range of standard voice mail machines and also to grow with the standard as more features are 
added for enhanced integration.
Advantages provided by the Strata DK and the Stratagy/VP SMDI integration are: 
						

							Features
System Features
Strata DK General Description    5/9981
Better Port Usage
SMDI is a faster and more efficient integration compared to DTMF (in-band) integration and is 
recommended for high-traffic installations.
Improves Call Coverage
Stratagy uses the call forwarding status (e.g., all calls, no answer, busy, etc.) supplied by SMDI to 
provide better call coverage. The status information also enables Stratagy to perform custom 
applications using Stratagy RNA and Busy Chain options.
Streamlines Messaging Procedures
©SMDI provides the calling party’s extension to Stratagy. Users calling Stratagy from their 
telephone do not have to enter their User ID to log on to their mailbox.
©When an internal party calls an extension that is forwarded to voice mail, SMDI applies the 
calling party’s identification to the message. Since the source of the message is already known, 
the message recipient does not have to enter the User ID when replying to it.
©Caller ID and ANI numbers are delivered to the Voice Mail machine via SMDI packets. DNIS 
names are not sent on SMDI packets.
Speed Dial
Speed Dial enables users to dial frequently-called telephone numbers (up to 20 digits per number) 
quickly by dialing a brief access code or by pushing a feature button. DK and Centrex/PBX feature 
access codes can also be stored for Speed Dial. There are two types of Speed Dial: System and 
Station.
System Speed Dial
System Speed Dial numbers can be used by all stations on the system. A designated station or 
attendant console or DKAdmin PC can assign System Speed Dial numbers.
©DK14, DK40i 
and the DK424 RCTUA
 processor provide up to 40 System Speed Dial 
numbers that can be used by all stations on the system.
©DK424 RCTUBA/BB
 and RCTUC/D
 provide up to 100 Speed Dial numbers.
©DK424 RCTUE/F
 can have up to 800 System Speed Dial numbers.
Station Speed Dial
The Strata DK14, DK40i, and DK424 Systems provide up to 40 personal Station Speed Dial 
numbers for each individual user. Each user Station Speed Dial numbers are exclusive to that user, 
and are not available to other station users. For more information, see “Speed Dial Buttons” on 
Page 99.
Station Hunting
The system supports two types of station hunting:
Serial Hunt
When a called [DN] ([PDN] or [PhDN]) is busy, the call (data or voice) will hunt to an assigned 
[DN]. If that [DN] is busy, the call hunts to the next assigned [DN], and so on. 
The call is eventually routed to the first idle station, or if it is a CO line call, then the call camps on 
to the last station in the hunt sequence, if all stations are busy. 
If a hunt station is call forwarded, calls to the station will ring at the forwarded destination—not 
the hunt destination. Internal callers will receive busy tone if calling into a hunt group in which all 
stations are busy. 
						

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82Strata DK General Description    5/99
Distributed Hunt (DH)
When a call is directed to the DH group, the system hunts for and sends the call to the next 
available station that is assigned to the DH group. Calls are evenly distributed to the members of 
the group on a rotational basis. The rotation of DH calls always follows the last telephone that 
receives a call. 
Each DH group is assigned to a unique [DN]. When a DH-[DN] is called, the call is sent to the 
[PDN] or 
3RROHG/LQH button of the telephone that is next in rotation to receive calls. 
If all stations in the DH group are busy, calls directed to the group will be placed into a call waiting 
queue and will be routed to the next available telephone in the DH group. Callers in queue will 
receive ringback tone until a DH group member becomes available to answer the call.
DH calls can be routed or transferred from Caller ID/DID/DNIS/ANI lines, Tie lines, DISA lines, 
loop/ground start CO lines, [DN] lines, and built-in and/or external AA. They can also be 
forwarded calls from stations, and overflow calls from ACD groups.
The DK14, DK40i, and DK424 provide a maximum of 16 DH groups. The queue can contain up to 
10 calls per group. A telephone can be a member of more than one (up to 16) DH group. Up to 32 
telephone [PDNs] can be programmed in any rotation order desired in each DH group. [PhDNs] 
can be assigned as members of the DH group in Release 3.1 and higher.
Station Message Detail Recording (SMDR)
The system produces calling information that is sent to a printer or call accounting device 
connected to a serial interface unit PCB (see below):
©DK14
 – WSIU
©DK40i
 – TSIU in the base KSU, PIOU, PIOUS in the Expansion Unit
©DK424
 – PIOU or PIOUS or RSIU/RSIS
The station number and the [DN] that made, received, or transferred a call is sent to the SMDR 
device after the call or transferred call is completed. Account Code information can also be 
included. ANI numbers, Caller ID numbers, and DNIS/DID/Tie numbers/names can be 
programmed to appear on the SMDR report. If present, the names take the place of the system 
Account Codes.
SMDR reports include the called number(s), and the time and duration of calls. Customers can 
select what type of calls—all calls, outgoing only, long distance calls—they want to appear on the 
report.
Station Relocation
This feature enables stations to be moved from one location to another without having to 
reprogram the Strata DK. Stations which are moved will maintain their set features and all [DNs], 
including Primary, Secondary, and Phantom.This feature does not work when stations are 
relocated from a PDKU to a KCDU PCB in the DK40i.
StrataControl (DK40i and DK424 only)
StrataControl™ is a system administrative tool designed specifically for end users who prefer to 
administer part of their own telephone system. It is a  Windows-based PC application enables 
limited access to Strata DK40 and DK424 system programming functions.
StrataControl also enables printing telephone keystrips based upon button programming assigned 
within the Strata DK system. Quick reference user guides can be printed based upon station 
features and options assigned within the system. StrataControl also includes an on-line telephone 
user guide, compiled from the end user’s DK database, specifically for each telephone.  
						

							Features
System Features
Strata DK General Description    5/9983
System Programming through a Station
The system can be fully programmed with a 20-button, LCD-type digital or electronic telephone. 
Programming telephones function the same as any other station when they are not in programming 
mode. See “Live System Programming” on Page 76.
System Program Administration Software (DKAdmin)
Toshiba DKAdmin software enables all customer configuration program options (speed dial, 
number plan, ring assignment, etc.) to be downloaded and stored on a PC disk. The customer data 
can be added or changed, using a PC independent of the Strata DK. DKAdmin is fully functional 
on DK14, DK40i and all processors of DK424.
The new (or original) customer program options stored on disk can be uploaded into the Strata DK 
from the PC to change (or restore) customer configuration.
DKAdmin software can be used to change or restore a customer’s configuration database stored on 
the PC disk and then installing at the customer’s site or remotely by modem. It enables customer 
database information to be transferred from one common control PCB to another, even when 
upgrading to a higher level processor.
Remote maintenance interface is enabled by the WSIU (DK14 only), TSIU (DK40i only) or for 
both DK40i and DK424, an RSSU and a customer-provided external modem, or a PIOU/PIOUS 
with IMDU built-in-modem, or an RSIU with RMDS (DK424 only).
An external customer-supplied modem could be used in place of IMDU or RMDS; however, the 
external modem will require a standard telephone port or CO line.
T1 Interface (DK424 only)
The T1 (DS-1) interface provides the system with up to 24 digital voice channels that can be 
individually programmed to operate as ANI, DNIS, Tie, DID, loop start or ground start CO lines. 
This allows the system to connect to a CO, Long Distance Provider or another type of Key or PBX 
system with a T1 interface.
The T1 interface (via the RDTU2 PCB) provides economic advantages through the high-traffic 
carrying capacity of its 24 channels and the cost-effectiveness of its digital transmission facilities. 
This feature requires a customer-provided, UL listed CSU in most locations of the U.S. In Canada, 
a CSA certified CSU/DSU is required.
T1 interface users also benefit from the increased quality and no loss nature of digital 
transmission. Access to the T1 interface is completely transparent to station users. With DK424, 
Release 4.0, RDTU2 PCBs supports features, which require the hook-flash signal on T1 DID/
DOD/Tie circuits.
Tandem CO Line Connections
This feature enables unattended line-to-line connections for the Strata DK, freeing the 
conferencing analog station or voice mail port for other calls and important tasks (see Table 32 on 
Page 88 for feature system capacities).
©DK14 enables up to two tandem connections
©DK40i enables up to three tandem connections
©DK424 enables up to 10 tandem connections
When a tandem connection is set up with a [DN] only, the [DN] must appear on the originating 
DKT or EKT. With DK14 and DK40i, standard telephones and VM ports that set up a tandem CO 
line connection cannot release from the connection.  
						

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84Strata DK General Description    5/99
With DK424, Release 3.2 and above, standard telephones and/or VM devices can establish tandem 
analog CO line connections and then release them without disconnecting the tandem connection. 
After releasing from tandem call, reconnecting to the call can be accomplished by dialing an 
access code. This feature does not work if one or both of the CO lines are digital.
Tandem CO line volume level depends on the volume loss level of the Telephone Network CO 
lines (see “Amplified Conference Interface” on Page 62).
Tenant Service
Businesses in the same office building can share a system.
©DK1
4 and DK40i
 each support up to two tenants
©DK424
 supports up to two tenants with RCTUA; all other processors support up to four 
tenants
Tenants can have separate LCR and Toll Restriction plans, Page Groups/Zones, Night Transfer 
ringing assignments, and flexible door phone and CO line ringing assignments.
Tie Lines
Tie lines can link the Strata DK40i or DK424 to other Strata DK systems or PBXs that support Tie 
lines. Incoming Tie line calls can be routed to ring a number of destinations within the Strata DK 
(see Table 29 on Page 64).
Analog Tie lines are interfaced via the REMU PCB, each of which provides four circuits. The 
interface options of Tie lines are: E & M Type I or Type II signaling, optional 2- or 4-wire 
transmission, Wink or Immediate start. Digital Tie lines, available with DK424, are provided by 
the RDTU2 and RPTU PCBs. 
Tie lines do not reduce station capacity in DK424 Systems, Release 4.0. In DK40i, each Tie line 
reduces the station capacity by one. 
CO lines transferred from Strata DK to another system over Tie lines will recall back to the 
originating Strata DK if the transferred call is not answered within a specified time (recall time is 
flexible for each station). The recalling station number may display on the LCD of the telephone 
being recalled.
An optional DTMF tone receiver PCB is required for Tie line operation:
©DK14
 does not support Tie lines
©DK40i
 requires the K5RCU tone receiver
©DK424 requires the RRCS tone receiver
Toll Restriction
Stations can be individually restricted from making toll calls. Separate restriction levels can be 
defined, each allowing or denying specific area and office codes, long distance information calls, 
international calls, and/or operator-assisted calls.
Each station is assigned any one of the available restriction levels or no restriction. Individual lines 
can be defined as unrestricted. Restriction levels can also be assigned to verified account codes, 
which require a user to enter an account code before dialing long distance. 
						

							Features
System Features
Strata DK General Description    5/9985
Toll Restriction Override by System Speed Dial
System Speed Dial numbers can be programmed to override Toll Restriction. When employees 
need to access a toll number that falls into a restricted area/office code for work purposes, an 
employer can assign the particular toll number as a System Speed Dial number. After overriding 
Toll Restriction with system Speed Dial, the caller can be blocked from or allowed to dial 
additional digits. Dialing long distance provider access codes (10XXX and 101XXX) is not
 
allowed, except when entered via a System Speed Dial number or LCR.
Traveling Class of Service
The normal Toll Restriction class of a station can be temporarily changed to another class. Each of 
the Toll Restriction classes can be assigned a four-digit code. 
If one of these codes is entered at any station, the station assumes the class associated with the 
code for the next dialed number. Then the station reverts back to its normal Toll Restriction class 
for subsequent calls. Traveling Class codes can be added, deleted, or changed by users from 
stations selected in programming.
Traveling Class codes will not appear on the SMDR reports. Verified account codes, which can 
also change Toll Restriction Class of Service, do print out on SMDR reports.
Unrestricted Call Transfer to Directory Numbers
Any CO, Tie or DID line or internal call can be transferred to any station [DN]. A station does not 
need a specific CO line’s appearance in order to transfer or answer the call.
Voice First or Tone Signaling
The system can be programmed for either Voice First Signaling to [PDNs] or Tone First Signaling 
to [PDNs] as the standard method of internal [PDN] call signaling. 
Tone Signaling is the commonly-used telephone ring when a call comes in. Tone Signaling better 
ensures privacy. With Tone Signaling, the called telephone receives a one-second ring tone every 
three seconds.
With Voice First Signaling, station users will hear a tone burst followed by the callers voice over 
their telephone speaker when called by another station user. Voice First allows handsfree talkback 
from the called telephone on internal and private network Tie line calls. 
When [PhDNs] are called, they always ring Tone first. Callers can always select the alternative 
method immediately after dialing a station number by dialing a 
.
Voice Mail Integration
The system can be configured with a Toshiba Stratagy, Stratagy DK or VP (Voice Processing) or a 
customer-supplied voice mail messaging system. The following features are available with many 
of the systems.
Automated Attendant
Many voice mail systems offer AA as part of their overall feature package.
ANI/DNIS Routing to Voice Mailbox
Each DNIS number or all ANI numbers can be assigned to route directly to a voice mailbox 
independent of telephone user voice mailboxes. Routing ANI/DNIS calls directly to a voice 
mailbox can be set for all calls or just calls during a particular system mode (Day, Day2, or Night). 
This feature is available with in-band VM integration only, not with SMDI. 
						

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Call Forward to Voice Mailbox
Each telephone user can forward calls directly to a personal mailbox. The caller bypasses the usual 
sequence of voice mail commands and simply leaves a message after hearing a tone. Feature 
integration of special voice mail features in Strata DK software enables the systems to work 
together more efficiently. 
The DK Systems provide SMDI or Inband DTMF tones for voice mail feature integration. These 
two options function independently of each other or together. All systems require a DK standard 
telephone port to interface with each Voice Mail port.
©DK14
 – the QRCU3 PCB enables DTMF. The WSIU PCB provides SMDI.
©DK40i
 – the K5RCU enables DTMF. TSIU, PIOU, PIOUS or RSSU PCBs enable SMDI.
©DK424
 – the RRCS enables DTMF. PIOU, PIOUS, RSSU or RSIU/RSIS PCBs enable SMDI.
Message Waiting Indication
When a message is recorded in a user’s mailbox, the voice mail system automatically sets a 
message waiting indication—typically a flashing LED—at the users digital or electronic 
telephone or the message waiting lamp on a standard telephone connected to an RSTU2 PCB.
A Toshiba telephone can have up to five message waiting buttons/LEDs. A fixed 
0VJ button for 
the telephone’s [PDN], and up to four (flexible) message buttons for each of the [PhDN].
Voice Mail Control via Station
On DK14 and DK40i, station users can control voice mail equipment from their telephone dial 
pads. when not connected in a conference call. With DK424, Release 3.2 and above, DK424 
station users can control voice mail equipment on a conference call with other station’s internal or 
external CO lines.