Toshiba Strata Dk14, Dk40i, Dk424i General Description Manual

							System Features
Emergency Ringdown
Strata DK General Description    6/0075
Emergency Ringdown
Standard telephones can be programmed to automatically ring a designated extension when they 
are taken off hook, after a predetermined time without dialing. The receiving digital or electronic 
LCD station or attendant console displays the station name/number of the off-hook calling station. 
This feature does not work with digital and electronic telephones. 
In healthcare applications, this feature is known as Emergency Ringdown operation. It is used to 
assist callers who may not be able to complete a call by dialing. If a station is left off-hook, 
continuous ringing will occur at a designated extension. This feature is also known as “Hotline 
Service” for hotel/motel applications. See “Hotline Service” on Page 78 for more information.
Enhanced 911 (E911) Service (DK40i, DK424i only)
E911 delivers a 911 call to the Public Safety Answering Position (PSAP) with an information 
element that identifies the source of the call. Called CESID (Caller Emergency Services 
Identifier), it can be used to determine the location of the caller. In many locations, E911 also 
includes the ability to connect to emergency services by dialing “9-1-1” without any access codes.
The Strata DK offers three E911 solutions. Only one solution may operate on a system at one time. 
Detailed installation instructions for each solution may be found in the Strata DK Installation & 
Maintenance Manual. The solutions are:

Adjunct Equipment – The Strata DK uses standard, single-line telephone ports to connect to 
external E911 equipment which is connected to the public network by CAMA trunks.

CAMA Trunks – The DK424i can connect directly to CAMA trunks using an RMCU PCB 
and its RMCS subassembly. Internal notification includes alerting of attendant consoles, 
optional conferencing of the emergency call and a Start-of-Call SMDR message. The system 
may be programmed to sustain the CAMA connection even if the originating station goes on 
hook. With this option, if the station goes off hook again, it will continue to be connected to 
the PSAP.

ISDN – The DK40i and the DK424i can deliver E911 calls to the PSTN over  PRI. The 
following table shows the availability of these solutions on the Strata DK models. Internal 
notification includes alerting of attendant consoles, optional conferencing of the emergency 
call and a Start-of-Call SMDR message. ISDN trunks will not sustain a connection after the 
originating party hangs up.
Adjunct Equipment Operation
The Strata DK provides two single-line telephone ports (QSTU2, RSTU, KSTU2, RDSU, PSTU, 
or PESU) to connect to adjunct E911 equipment. These specially programmed, single-line ports 
communicate the originating DN to the adjunct equipment using DTMF tones.
The adjunct equipment uses CAMA (Centralized Automatic Message Accounting) trunks to 
connect the call to the public network. CAMA trunks are analog trunks that use reverse-battery 
signalling and MF (Multi-Frequency) tones to dial 911 calls and transmit the CESID.
Table 35 E911 Solution by Software Release
E911 SolutionDK40DK40iDK424i
Adjunct Equipment Release 3.1 Release 3.1 Release 3.1
CAMA Trunks Release 4.3 Release 4.3
ISDN Release 4.3 Release 4.3 
						

							System Features
External Page Zones
76Strata DK General Description    6/00
Two companies have been identified that supply the E911 adjunct translation systems: Proctor and 
Associates, Redmond, WA, (800) 824-9719; and Telident, Inc., Minneapolis, MN, (800) 536-4911.
Direct CAMA Connections
The DK424i E911 feature provides direct connection of CAMA trunks for flexible dialing of 911 
emergency calls. This allows users who are not familiar with DK424i dialing sequences to make 
an emergency call regardless of how they dial 911 from Toshiba telephones. The DK will seize an 
idle CAMA trunk and send 911 plus the dialing station’s Caller Emergency Service Identification 
(CESID) over the CAMA trunk via MF tones. Once a 911 call is started, most other buttons/keys 
on a telephone are disabled to prevent accidentally dropping the 911 call.
ISDN Operation
The DK40i and DK424i can place E911 calls directly over ISDN  Primary Rate Interfaces (PRI). 
In the ISDN call setup for both cases, the Called Party Information will be “911” and the Calling 
Party Information will be CESID.
For both Direct CAMA Connections and ISDN Operation, two packets are sent out the SMDR 
port on each E911 call. The first packet will be sent immediately at the start of the call and the 
second will be sent at the end of the call when the CAMA or ISDN trunk releases.
External Page Zones
The Strata DK40i can support up to four External Page Zones and DK424i can support up to eight 
(Table 29 on Page 50 and Table 30 on Page 50). Station users can access one, four or eight zones 
simultaneously by dialing a brief access code. The zones are composed of customer-supplied 
speaker(s) and amplifier(s) which interface with one or two PIOU PCBs. DK14 does not support 
zone paging.
Flexible Button Assignment
Each of the flexible buttons on digital and electronic telephones can be assigned for feature or CO 
line access, enabling station users access to features and lines with the touch of a button. Digital 
telephones are available in 10- and 20-button models.
Flexible Directory Numbers
A “flexible” number of digits can be programmed for station [DNs] in the Strata DK. DK station 
[DNs] can have from one to four digits. The maximum available number of unique station [DNs] 
([PDNs] plus [PhDNs]) are listed below:

DK14 – up to 20 unique station [DNs] are allowed

DK40i – up to 56 unique station [DNs] are allowed

DK424i – up to 672 unique station [DNs] are allowed
Single-digit [DNs], such as “0”, can be assigned to attendant consoles or attendant telephones.  
						

							System Features
Flexible Line Ringing Assignment
Strata DK General Description    6/0077
Flexible Line Ringing Assignment
Each CO line can be programmed to ring the Auto Attendant, night bell, DISA, remote 
maintenance modem or any station [DN] in the system. A different ringing assignment can be 
created for each of three ringing modes—Day, Day2 or Night. Stations assigned to ring can do so 
with any of the following three timing designations:

Immediate – Stations assigned Immediate timing ring as soon as the line rings into the system.

Delay 1 – If stations with Immediate timing have not answered within 12 seconds (three 
rings), stations assigned Delay 1 timing also begin ringing. Immediate Ring telephones 
continue to ring when Delay 1 Ring telephones ring.

Delay 2 – If the above stations have not answered within 24 seconds (six rings), stations 
assigned Delay 2 timing also begin ringing. Immediate and Delay 1 Ring telephones continue 
to ring when Delay 2 Ring telephones ring.
Group Paging
Digital and electronic stations can be divided into Paging Groups. Any station user can make a 
page announcement to just one or all of these groups. The page is sent to the speakers of all idle 
telephones in a page group. For more information, see Table 40 on Page 109.

DK14, DK40i each support up to five Paging Groups, including the All Call Page Group.

DK424i supports to up to nine Paging Groups, including the All Call Page Group.
Note Cordless digital telephones and standard telephones are not compatible with Paging.
Handsfree Directory Number Paths
All stations can have handsfree conversations simultaneously. Because [DN] paths are 
nonblocking, the number of conversations is only limited by the amount of digital and electronic 
stations.
Hospitality Management Information System (HMIS)
The Toshiba Strata DK Hospitality Management Information System (HMIS) is a PC-based 
solution, designed to meet the specific operational needs of small- to medium-sized hotels and 
motels. HMIS tightly integrates with the Strata DK40i, DK424i Digital Telephone System, 
Release 3.1 or higher, and the Stratagy Voice Processing System, providing a complete and fully-
integrated hospitality package.
HMIS is offered as a software kit or as an optional turnkey package that includes both the PC and 
software. The packaged product includes a Toshiba Equium™ PC with a Pentium II processor, 
2GB hard drive, three serial ports, keyboard, mouse, SVGA color monitor, and software (printer 
not included). The HMIS software is a Microsoft Windows 98/95-based application.
HMIS PC is dedicated to running the HMIS server program and functions as a front desk terminal. 
In applications requiring multiple front desk terminals, PC HMIS workstations can be networked 
together to share a common database.
HMIS application provides hotel/motel features and property management capabilities that are not 
resident within the Strata DK telephone system. HMIS is well integrated with the telephony 
features of the Strata DK telephone system to which it is attached. Strata HMIS provides guest  
						

							System Features
Hotline Service
78Strata DK General Description    6/00
check-in/check-out, up to 20-year reservation capacity, automatic wake-up calls, SMDR telephone 
call tracking and costing, billing, telephone system control, and many other features.
PMS Interface – The HMIS Property Management System (PMS) Interface called Hlink, is the 
interface connecting HMIS to other PMSs. The HMIS server serial port connects to the PMS PC’s 
serial port. This interface enables the customer to use an external PMS to perform front desk 
operations while the HMIS performs telephone control functions. The HMIS Command window 
displays completed tasks received from or sent to the PMS. Customers can use the strengths and 
specific functions of both their PMS and HMIS to meet their specific needs. See the Hospitality 
Management Information System General Description for more details.
Hotline Service
Standard telephones can be automatically ring a designated extension if they go off hook and do 
not dial with a preprogrammed time. The receiving digital or electronic LCD station or attendant 
console displays the station name/number of the off-hook calling station. This feature does not 
work with digital and electronic telephones.
Hotline Service is very useful for hotel/motel applications, where it may be preferable to have 
lobby or public area telephones without dialing capability. Standard telephones can be 
programmed to automatically call a specific number, such as the front desk. This feature is also 
known as Emergency Ringdown in the healthcare field (see “Emergency Ringdown” on Page 75.)
Integrated Services Digital Network (ISDN) 
 (DK40i, DK424i only)
ISDN is a set of integrated telecommunications services, available over the public 
telecommunications networks. ISDN makes it possible to send, receive and modify information 
using telephone lines in ways that were not previously possible, such as:

Dynamic use of individual or groups of standard (POTS), DID, Tie, FX, WATS, 800 lines on 
an as-needed basis

Much faster call setup and data transfer up to 128 kbps

Multi-purpose line use, including sharing lines for voice, data, fax, and video

DID functionality based on the number dialed; without needing to reserve a block of numbers
ISDN service comes in two forms: 

Primary Rate Interface (PRI) supports simultaneous voice or data connections (eight or 12 
for the DK40i) (eight, 16 or 23 for the DK424i). PRI is similar to digital T1 service and uses 
two pairs of wires from your phone company.

Basic Rate Interface (BRI) supports up to two simultaneous connections using a single pair 
of wires.
National ISDN standards were first established in 1992. These were formed for all equipment 
providers and services to create a common set of functions for these new services. The public 
network is in the process of implementing nationwide the National ISDN 2 (NI-2) services and 
some locations have started National ISDN 3. Strata DK Release 4.0 is based on NI-2. 
						

							System Features
Integrated Services Digital Network (ISDN) (DK40i, DK424i only)
Strata DK General Description    6/0079
ISDN Primary Rate Interface (PRI)
PRI is the larger ISDN interface (via the RPTU) and uses the 23B+D transmission format, which 
has 23 64-kbps bearer channels and one 64-kbps data (control) channel, with total bandwidth of 
1.544 mbps.
PRI is designed as the trunk interface to the ISDN network. PRI connects the DK40i or DK424i 
telephone system to an intra- or inter-LATA communication provider. PRI can be used to send/ 
receive voice and/or data.
More importantly, PRI can save money by enabling the multiple use of the channels on the PRI 
link for a variety of services, such as DID, Tie, FX, WATS, 800, etc., on demand. 
This capability to support multiple services and dynamically allocate channel use as needed is 
known as the call-by-call feature. PRI lines also support Calling Number Identification Services 
(CNIS).
A dealer-supplied, UL listed, Channel Service Unit (CSU) is required between the DK PRI 
interface and the PRI line provider interface in most locations of the U.S. In Canada, a CSA 
certified DSU/CSU must be installed.
ISDN Basic Rate Interface (BRI)
Strata DK40i and DK424i support BRI S/T features. As of Release 4.3 and higher, Strata DK40i 
and DK424i support BRI U basic features.
BRI is the smaller ISDN interface and provides two simultaneous voice or data connections with a 
single interface. BRI uses the 2B+D transmission format which is defined as two 64-kbps bearer 
channels and one 16 kbps data (control) channel. The D-channel carries call setup control data.
ISDN BRI station applications allow the connection of ISDN instruments, such as a group IV fax, 
PC, computer terminal or port, a LAN bridge, video conferencing terminal, Internet access 
devices, LAN access routers, or other devices that benefit from an all digital transmission link.
BRI applications for the DK424i will include video conferencing, remote access servers, faster 
Internet access, point-of-sale devices and high-speed data connections from ISDN stations to the 
public ISDN network, as well as typical voice and fax connections. With the correct external 
adapter, data can be sent up to 128 kbps.
Like PRI, BRI provides CNIS, DID, Direct Inward Lines, and other data access services when 
used to access the public network.
The Strata DK BRI cards  support both station side and trunk side connections. The Strata DK 
systems  also support BRI interface from the public network as a CO line service. There are two 
types of ISDN BRI interfaces: S/T type (via RBSU/RBSS) and the U-type (via RBUU/RBUS for 
DK40i and DK424i; TBUU/TBUS for DK40i). Both S/T and U types are used in the U.S. 
The Public Switched Telephone Network provides BRI U-type lines only; therefore, a dealer-
supplied, external Network Terminal Unit (NT-1) is required to connect DK S/T-type BRI line 
circuits to the network. The NT-1 must be UL listed (U.S.) or CSA certified (Canada).
Call-by-Call Service Selection
This feature permits the grouping of individual PRI B-channels to be shared among various types 
of services specified by the customer, instead of having to dedicate each channel to a particular 
type of service. Using this common pool of channels provides much improved traffic handling 
than using dedicated channels.
This dynamic allocation of service can reduce the number of circuits required to access various 
services, especially if various services have different peak busy periods. 
						

							System Features
Integrated Services Digital Network (ISDN) (DK40i, DK424i only)
80Strata DK General Description    6/00
In Release 4.15, the DK424i enables specifying the minimum and maximum number of B-
channels used for each service on a common set of B-channels in system programming. Minimum 
and maximum values can be set for three time periods during the day. 
These values can be used to ensure that a minimum number of channels remain available for 
incoming calls. They can also be used to determine if calls should be rejected because they exceed 
the maximum number subscribed for that service.
Call-by-Call services can be specified to map Strata DK capabilities to network services such as 
DID, Tie, FX, WATS, 800, etc. These services can be provided via the local telephone carrier or be 
connected to any ISDN inter-exchange carrier. 
Outgoing calls, specific numbers, or DID numbers can be checked against the Call-by-Call table 
which lists all valid DNs. DNs can be identified on a per station basis to enable billing calls to a 
selected service or station. All numbers used for identifying the call must be subscribed from the 
providing service, otherwise the call will be rejected by the provider.
Non-Facility Associated Signaling (NFAS)
NFAS provides the ability to create ISDN trunk groups beyond the 23 channels available with a 
single PRI. This is extremely important when Call-by-Call Services are used since all B-channels 
must be controlled using a common D-channel.
The Strata DK system will support one additional PRI (two circuits to be linked with one 
D-channel). This extends the number of call-by-call B-channels to 47 (2 x 24 minus 1). This 
provides better performance and cost savings in high volume ISDN PRI applications.
Calling Number Identification Services (CNIS)
CNIS features provide “Calling Party Information” to the network (outgoing calls) and from the 
network (incoming calls). There are four types of CNIS services:

Number Provisioning for outgoing calls is controlled by subscription parameters with your 
telco provider. The choice is for the number to be necessary or not. The number sent is based 
on the call originator and the call type. The originator can be a tandem call, a station (with or 
without DID), or a station with a designated number. The type of call refers to whether it is a 
direct or redirected (call forwarded) call.
For a tandem call, the Calling Party Number digits received are the digits that will be sent. For 
a direct station call, the default number assigned to the selected service, and which is 
programmed into the Strata DK as the Listed Directory Number (LDN), will be the number 
sent. In this case, the system can send a fixed number (assigned in the system) or it can use the 
DID programming to determine the number to be sent.

Number Screening is normally performed by the public network to ensure that the call being 
placed has a valid billing number. In systems with a flexible Calling Number Provisioning, the 
network can determine if the call is for a valid billing number. Based on this, it can either place 
or reject the call, rather than completing the call and billing it to the default LDN.

Number Privacy allows the caller to prevent the public network from delivering the Calling 
Number to the called party on a per-call basis. Service subscribers can request that the number 
be presented or not, as a default from the public network. Subscribers can also change default 
settings. If a public telco service allows changes to be made, then a user can enter change a 
code to the setting for that call after selecting a trunk group. 
						

							System Features
Least Cost Routing (LCR)
Strata DK General Description    6/0081

Number Delivery sends the calling number with the call setup message, if that number is not 
blocked. The Strata DK handles the number the same way that ANI information from T1 
trunks is handled. For instance, the number can display on the called telephone’s LCD, or it 
can be used by TAPI interfaces, or it can be recorded in SMDR data records.
Least Cost Routing (LCR)
Different route plans may be designed to automatically place outgoing calls over the most cost-
efficient routes. See the table below for LCR capacities.
Three different LCR time schedules with their own priority schedules can be set up for the 
business day. Stations can be grouped into one of eight LCR classes, each with its own routing 
priority. Selected station users may have priority use of a line, even when the route with the lowest 
cost is not available. LCR is compatible with ABR.
Line Groups
For easy access, various types of outside lines can be assigned to groups (normally for pooled line 
and LCR applications). For example, all local lines can be assigned to one group and WATS lines 
in another group. Station users access line groups by dialing an access code or by pressing a 
feature button.

DK14 provides up to four line groups

DK40i provides up to eight line groups

DK424i each provide up to 16 line groups
Line Queuing
A station user can use the Automatic Callback feature to enter the queue for a busy outgoing line. 
When the line becomes available, the system calls the station back. Queuing applies to single lines, 
line groups, and when calling via LCR.
Live System Programming
Programming the Strata DK from an on-site or off-site location does not interrupt the operation of 
the system in most cases. It is interrupted for hardware upgrades.
Table 36 Least Cost Routing Capacities
DK424i
Least Cost RoutingDK14DK40iB1CUB2CAU/B2CBU,
B3CAU/B3CBUB5CAU/B5CBU
LCR route plans 8 8 8 16 16
Area Code/Office Code exception tables 8 8 8 16 16
Time schedules 3 3 3 3 3
Station classes 4 4 4 8 8
Route definition tables 4 4 4 6 6
Modify digit tables 6 6 6 12 12 
						

							System Features
Memory Protection
82Strata DK General Description    6/00
Memory Protection
If the power fails, the Strata DK has an internal battery backup that protects data and the 
customer’s programmed configuration. This information will be maintained within a powerless 
system for at least six years.
Message Waiting
Any station and most voice mail devices can leave a message waiting indication (light) on a 
designated message waiting light of a digital, electronic, or standard telephone station.
Message waiting lights can be activated when a voice mail message has been left, or they can be 
turned on by a calling station. The station user can retrieve messages by pressing the button next to 
the message waiting light.

DK14 and DK40i – QSTU2 and KSTU2 PCBs do not support standard telephone MW lamps.

DK40i, DK424i – an RSTU2 PCB must be connected to a standard telephone with a MW 
lamp to enable this feature. These DK systems provide Messages Waiting to standard 
telephones with a message waiting lamp. The user can enter an access code to retrieve the 
messages. A standard station can store up to four indications. 
Multiple Directory Numbers
A [DN], sometimes called an “extension number,” is the number someone must call to reach a 
destination within the system. To maximize call coverage flexibility, station [DNs] can appear on 
multiple telephones. Also, individual telephones can have multiple [DNs] (see Figure 17).
The system provides three types of [DNs]: Primary, Secondary and Phantom. All [DNs] can be 
used to originate and answer calls. If you press a [DN] while on a call, it releases the existing call 
and provides dial tone to make another call.

DK14 supports a maximum of 10 [PDNs] and 10 [PhDNs]

DK40i supports a maximum of 28 [PDNs] and 28 [PhDNs]

DK424i each support a maximum of 336 [PDNs] and 336 [PhDNs] (See Table 38 for 
maximum capacities for various common control units)
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. 
						

							System Features
Multiple Directory Numbers
Strata DK General Description    6/0083
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
Incoming 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 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.
Each [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].
A 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.
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 
						

							System Features
Multiple FCC Registration
84Strata DK General Description    6/00
[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 DK424i 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, 
	 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

DK424i supports 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.