Strata DK24 User manual

Issue 1, September 1992
STRATA DK
Release 3 and 4
© COPYRIGHT 1992 TOSHIBA AMERICA INFORMATION SYSTEMS, INC.
All rights reserved. No part of this manual may be reproduced in any form or by any means — graphic, electronic, or
mechanical, including recording, taping, photocopying, or the use of information retrieval systems — without express written
permission of the publisher of this material.
Check with your Telephone System Administrator to find out which software release is installed for your Strata DK 24/56/96
telephone system. Enter the release version number below.
Release _________
DATA INTERFACE USER GUIDE

STRATA DK
TRADEMARKS AND SERVICE MARKS
The following trademarks and service marks are used in this document:
■STRATA®
: registered trademark of Toshiba America Information Systems, Inc.
Toshiba America Information Systems, Inc. reserves the right to change any information in this
document, including, but not limited to, product characteristics and operating specifications without
prior notice.

Table of Contents
SUBJECT PAGE
INTRODUCTION
General Description.......................................................................................................... iii
Organization ..................................................................................................................... iii
Supporting Documentation............................................................................................... iii
Acronyms.......................................................................................................................... iv
CHAPTER 1DATA HARDWARE REQUIREMENTS................................................................................. 1-1
Introduction....................................................................................................................... 1-1
Hardware Requirements................................................................................................... 1-1
Integrated Data Interface Unit (PDIU-DI).......................................................................... 1-1
Data Telephone (PDIU-DI) Buttons and LEDs.................................................................. 1-2
PDIU-DI Connections ....................................................................................................... 1-3
Communication Parameters............................................................................................. 1-3
Stand-alone Data Interface Unit (PDIU-DS) Connections................................................ 1-5
PDIU-DS LEDs................................................................................................................. 1-6
CHAPTER 2USER INSTRUCTIONS........................................................................................................ 2-1
How to Use this Chapter................................................................................................... 2-1
Data Call to Internal Printer or Other Data Device............................................................ 2-1
Data Call to Another Internal Data Telephone's PC or Terminal....................................... 2-2
Voice Call While on a Data Call........................................................................................ 2-5
Data Call While on a Voice Call (Same Telephones)........................................................ 2-6
Data Call to Data Phone While on a Voice Call to Another Phone................................... 2-6
Outgoing Data Call—Dialing Through the System Modem Pool...................................... 2-7
Incoming Data Call (External)........................................................................................... 2-9
Switch from Outside Voice Call to Data Call..................................................................... 2-11
CHAPTER 3MODE DEFINITIONS ........................................................................................................... 3-1
Introduction....................................................................................................................... 3-1
DIU Operation Modes....................................................................................................... 3-1
Command Mode............................................................................................................... 3-1
Result Codes................................................................................................................ 3-1
S-Registers................................................................................................................... 3-2
Dialing Modifiers........................................................................................................... 3-2
Communications Mode (On-line State)............................................................................. 3-3
Switching Between Modes................................................................................................ 3-3
DIU Data Speed (Baud Rate)........................................................................................... 3-4
DIU Default Communication Parameters.......................................................................... 3-4
STRATA DK TABLE OF CONTENTS
i

FIGURE LIST
FIGURE TITLE PAGE
1-1 Data Telephone (Integrated DIU) Connector.................................................................... 1-2
1-2 Stand-alone DIU Connector.............................................................................................. 1-5
1-3 PDIU-DS LEDs................................................................................................................. 1-6
TABLE LIST
TABLE TITLE PAGE
1-1 Communication Parameter Options.................................................................................. 1-4
3-1 DIU AT Command Set...................................................................................................... 3-5
3-2 DIU Result Code Set ........................................................................................................ 3-6
3-3 DIU S-Register Set........................................................................................................... 3-7
3-4 DIU Dialing Modifier Set ................................................................................................... 3-8
STRATA DK TABLE OF CONTENTS
ii

iii
Introduction
GENERAL DESCRIPTION
The STRATA DK Data Interface Units (DIUs) provide users with the
capability to execute a wide variety of data call features. This user guide
contains instructions on how to implement these features.
All the features in this guide have practical applications for a diversity of
office environments. Instructions are provided on how to use the DIUs to
connect personal computers together to exchange files, to share a printer
or a modem, to access a mainframe, and more.
Feature operation is are easy and can be accomplished quickly. For the
most part, operation is a matter of pushing some buttons or dialing a
number on the digital telephone and/or issuing a few commands from the
keyboard of a terminal or personal computer.
A 2B+D ISDN-type digital link in conjunction with the DIUs enable digital
telephones to participate in simultaneous voice and data calls. Voice and
data calls are transmitted over the same digital telephone wire pair. This
offers users a number of calling options. For example, a digital telephone
user can place a voice call while in the middle of a data call to a printer or
host computer, etc. This type of call and many more are easily accessed
with the help of this guide.
ORGANIZATION
This user guide is divided into four chapters. Chapter 1 is the
introduction. Chapter 2 provides a description of the DIUs: their function,
controls, and applicable indicators. Chapter 3 contains the calling
procedures.
SUPPORTING DOCUMENTATION
The following documents can be used to reference further information
about the DIUs and the STRATA DK system:
STRATA DK Digital Telephone User Guide— Explains the procedures
necessary to operate all the voice features on the digital telephone.
STRATA DK General Description— Includes general information on DIUs
and all other system components.
STRATA DK INTRODUCTION

ACRONYMS
Acronyms appearing in the user guide are defined below:
BPS Bits per second
DIU Data Interface Unit
LCD Liquid Crystal Display
LED Light Emitting Diode
PC Personal Computer
PDIU-DI Integrated Data Interface Unit
PDIU-DS Stand-alone Data Interface Unit
STRATA DK INTRODUCTION
iv
STRATA DK INTRODUCTION

Chapter 1
INTRODUCTION
This chapter lists all the equipment required to originate or receive a data
call. In addition, it explains the function and configuration of the data
interface units (DIUs), both the Integrated-into-the-telephone (PDIU-DI)
and Stand-alone (PDIU-DS) types.
HARDWARE REQUIREMENTS
The following hardware is required to originate a data call:
■A PDIU-DI (replaces digital telephone base)
■A Personal Computer or ASCII Terminal
■One of the following Toshiba 2000- or 1000 Series Digital Telephones:
❏DKT2010-H (10-button model)
❏DKT2010-SD ( 10-button model with a Liquid Crystal Display
(LCD) and speakerphone)
❏DKT2020-S ( 20-button model)
❏DKT2020-SD ( 10-button model equipped with LCD and
speakerphone)
❏DKT1010-H ( 10-button model)
❏DKT1020-SD ( 10-button model equipped with LCD and
speakerphone)
A data call can be made to a device connected to a DIU (PDIU-DI or
PDIU-DS). These devices include the following.
■Mainframe Computers
■Printers
■Modems
■Personal Computers
■ASCII Terminals
INTEGRATED DATA INTERFACE UNIT (PDIU-DI)
A telephone within the STRATA DK system that participates in a data call
must be a Toshiba digital telephone equipped with an integrated DIU
(PDIU-DI). A label reading “MODEL PDIU-DI” on the the bottom of the
telephone and an RS-232 connector on the back of the telephone both
indicate that a telephone is equipped with a PDIU-DI.
STRATA DK DATA HARDWARE REQUIREMENTS
1-1

NOTE: Throughout this guide, PDIU-DI-equipped digital telephones that
are connected to ASCII terminals or personal computers are referred to
as data telephones.
Figure 1-1
Data Telephone (Integrated DIU) Connector
DATA TELEPHONE (PDIU-DI) BUTTONS AND
LEDS
In system programming, the data telephone can be assigned the
following data feature buttons:
Data Call Button—Enables a digital telephone’s PDIU-DI to be
connected with another DIU in the system when manually dialing from
the telephone. When the DATA CALL button is pressed on an idle data
telephone, the system sends intercom dial tone to the telephone to
prompt dialing. The DATA CALL button also can be used to switch data
telephones and CO lines from voice to data on external calls. The DATA
LED lights when you receive a data call from another data telephone or
when you make a call from your data telephone, personal computer, or
ASCII terminal.The DATA LED will always be red when lit (ON).
Data Release Button—Terminates data calls. The DATA RELEASE LED
never illuminates.
Modem Button—Reserves a system modem for 60 seconds. If a
modem is not accessed within this time limit, press this button again to
STRATA DK DATA HARDWARE REQUIREMENTS
1-2
RS-232 CONNECTOR

reserve for another 60 seconds. The MODEM LED indicates modem
status: a flashing LED indicates that a modem is currently reserved for
your telephone; a steadily lit LED indicates that you have actually
accessed a modem or that all modems are busy. The MODEM LED will
always be red when steadily ON or flashing.
PDIU-DI CONNECTIONS
If a data terminal is connected to a data telephone, the terminal must be
an ASCII type with a standard keyboard and a display screen or printer
display.
If a personal computer is connected to a data telephone, the personal
computer must be running at least one of the following types of
programs: word processor, desk organizer dialer, or communications
software. Also, the personal computer must be active (on-line) on its
COM port connected to the data telephone’s PDIU-DI.
NOTE: It is not possible to establish data call connections from your
personal computer DOS prompt.
The data telephone (PDIU-DI) is connected to the personal computer
serial communications port (COMX, where X = 1, 2, 3, or 4) or terminal
with an RS-232 cable and connector. It is connected to the STRATA DK
system like any other digital telephone with a modular cord.
COMMUNICATION PARAMETERS
Before a data connection is established, the communication
parameters—data speed (baud rate or bps), parity, data bits, stop
bits—of the terminal or personal computer must be the same as the data
device that is calling or being called. To set the personal computer
communication parameters, use the following MS-DOS MODE
commands:
MODE LPT x: =COM x ( x = 1, 2, 3, or 4)
MODE COM x: baud rate , parity , data bits , stop bits , P
STRATA DK DATA HARDWARE REQUIREMENTS
1-3

Table 1-1
Communication Parameter Options
NOTE: In most cases, it is recommended to program the above two
MODE commands into the personal computer’s DOS AUTO EXEC.BAT
file. Also, in most communications software, desktop, and word
processor programs, the COM port number and communication
parameters must be set to allow proper operation of data calls.
STRATA DK DATA HARDWARE REQUIREMENTS
1-4
Baud Rate 110
150
300
600
1200*
2400
4800
9600
Option Meaning
transmission
speed in bits
per second
Legal Values
Parity
Data Bits
Stop Bits
N*
O
E
7
8*
1*
no parity
odd parity
even parity
*Default settings

STAND-ALONE DATA INTERFACE UNIT (PDIU-
DS) CONNECTIONS
Data devices, such as printers, modems, mainframe computers, etc.,
must be connected to a PDIU-DS with an RS-232 cable and connector.
Figure 1-2
Stand-alone DIU Connector
NOTES:
1. The PDIU-DS must be connected to the STRATA DK system with a
modular cord. The PDIU-DS, like a regular station, is assigned a
station number, which must be known by people who will use the
device connected to the PDIU-DS.
2. It is recommended that the line sides of modems be connected to
standard telephone ports to ensure access to the complete set of
modem pooling features. Modems with their line sides connected to
a dedicated CO line may not have access to the whole set.
1234
DNTA
ON
RS-232 CONNECTOR
STRATA DK DATA HARDWARE REQUIREMENTS
1-5

PDIU-DS LEDS
The PDIU-DS has three green LEDS on its front panel which indicate
transmission status.
POWER LED—When the PDIU-DS is connected to the STRATA DK
system with a modular cord, the POWER LED will be ON (lit).
READY LED—The READY LED will be ON (lit) when the PDIU-DS is
connected to a device that is turned on and ready to exchange data.
CONNECT LED—When a data call is established (ringing or answered),
the CONNECT LED will be ON (lit).
Figure 1-3
PDIU-DS LEDs
DIU
POWER READY CONNECT
STRATA DK DATA HARDWARE REQUIREMENTS
1-6

Chapter 2
HOW TO USE THIS CHAPTER
To assist you in achieving a greater performance efficiency, the
information in this chapter has been divided into two distinct areas of
content. All instructions for various procedures appear in the left-hand
column in a numbered sequence, enabling you to quickly perform a
specific task. A more detailed description of these procedures, or
explanations of the effects of these actions, can be found in the right-
hand column.
DATA CALL TO INTERNAL PRINTER OR OTHER
DATA DEVICE
If using a personal computer (PC), data calls to printers can be
connected anytime while running a word processor, spread sheet, or
data base program.
This procedure can also be used to make data calls to other internal data
devices, such as modems or mainframe computers, that are connected
to stand-alone DIUs. A communications software program is generally
required for these other type of internal data calls.
Before making this call, verify that the communication parameters of your
PC or terminal match those of the printer or data device that you are
calling.
The Data Call, Spkr, and Mic (see note) LEDs will turn ON and be steady
red, and the INT LED will turn ON and be steady green. The data
telephone will receive intercom dial tone.
NOTE: Depending on system programming, the MIC LED may or may
not turn ON.
The Spkr, Mic, and Intercom LEDs will turn OFF; the Data Call LED will
remain ON and steady red.
If busy, press the Data Call button and try again; if busy tone is not
received, the call is connected.
Print data using your terminal or PC software program.
To make the call:
1. Press the Data Call button on
your data telephone.
2. From your data telephone, dial
the station number of the DIU
connected to the printer.
3. Data can be printed.
STRATA DK USER INSTRUCTIONS
2-1

To terminate the call:
1. Press the Data Release
button on your data telephone.
To verify communications from
your PC or terminal:
1. Type A T and then press
on your PC or
terminal.
Enter
The Data Release LED will turn OFF.
The call will be terminated.
DATA CALL TO ANOTHER INTERNAL DATA
TELEPHONE'S PC OR TERMINAL
Personal Computers (PCs) involved in this call must be running a
communications software program.
Before making this call, verify that the communication parameters of your
PC or terminal match those of the PC or terminal that you are calling.
The following instructions work with typical communications software
programs. Higher-level software may integrate these low-level
communications dialing commands to provide more automated
operation.
Wait for:
To display on your PC or terminal screen
This display verifies that communications exist between your PC or
terminal and your data telephone.
NOTES:
1. AT commands must be typed as capital letters (use caps lock).
2. AT commands will appear on your PC or terminal as you type them.
AT
OK
STRATA DK USER INSTRUCTIONS
2-2

The Data Call LED will turn ON and be steady red after you press
.
Wait for:
To display on your PC or terminal screen
This display indicates that a connection has been established between
the called and calling terminals and/or PCs. XXXX indicates the data
transmission speed, and YYY is the called station number. The station
number of a data telephone's PDIU-DI is the same as its voice intercom
number.
NOTE:
If the called Data telephone is busy, "BUSY" will display on your terminal
or PC screen and the call will be automatically terminated. You may then
try to originate again.
Entry example: If the other data telephone's station number is 209, type
A T D D 2 0 9 . (A T D D is the DIU command for data call
dialing, and 209 represents the station number of the other data
telephone).
Exchange data using your terminal or PC software program as required.
The Data Call, Spkr, and Mic (see note) LEDs will turn ON and be steady
red, and the Intercom LED will turn ON and be steady green. The data
telephone will receive intercom dial tone.
NOTE: Depending on system programming, the Mic LED may or may
not turn ON.
The Spkr, Mic, and Intercom LEDs will turn off. The Data Call LED will
remain ON and steady red.
Enter
ATDDYYY
CONNECTXXXX
Enter
To make the call from your PC
or terminal:
1. Type A T D D, the station
number of the other data
telephone, and then press
.
2. Data can be exchanged.
To make the call from your data
telephone:
1. Press the Data Call button.
2. Dial the station number of the
other data telephone.
Enter
STRATA DK USER INSTRUCTIONS
2-3

3. If the called number is busy,
press the Data Release button
and try again.
4. Data can be exchanged.
To terminate the call from your
PC or terminal:
1. Hold the shift key down and
type +++.
2. Type A T H, and then press
.
Enter
Wait for:
To display on your PC or terminal screen
This message, which will appear on both sending and destination
locations, indicates that a connection has been established between the
called and calling terminals and/or PCs. XXXX indicates the data
transmission speed.
Exchange data using your terminal or PC software program as required.
Either the calling or called data user can terminate the data call using the
following procedures.
Wait for:
To display on your PC or terminal screen
This display indicates that the PDIU-DI connected to your terminal or PC
is now in the command mode and can accept AT commands.
Will display on the other PC or terminal screen
The Data LED on both data telephones will turn off.
+++
+++
OK
CONNECTXXXX
STRATA DK USER INSTRUCTIONS
2-4

Wait for:
To display on your PC or terminal screen
This display indicates that the call is terminated.
The Data LED on both data telephones will turn off.
Wait for:
To display on both PCs and/or terminal screens
This display indicates that the call is terminated.
VOICE CALL WHILE ON A DATA CALL
SIMULTANEOUS VOICE AND DATA BETWEEN THE SAME OR
DIFFERENT TELEPHONES
While on a data call, a data telephone can originate, answer, and
disconnect any type of voice call without interrupting the data call. For
example, Phone 1 can be on a voice call with Phone 2, and during the
call, Phone 1 can also send data to Phone 2.
To make a data call, see "Data Call to Internal Printer or Other Data
Device" or Data Call to Another Internal Data Telephone's PC or
Terminal" earlier in this chapter.
NO CARRIER
ATH
OK
. . . or . . .
To terminate the call from either
data telephone:
1. Press the Data Release
button.
To make a voice call while on a
data call:
1. While on a data call, make a
voice call in the normal
manner.
STRATA DK USER INSTRUCTIONS
2-5

To make a data call while on a
voice call:
1. While on a voice call with
another data telephone, press
the Data Call button on your
data telephone.
2. Data can be exchanged.
To terminate the voice or data
call:
1. Press the Data Release button
on either data telephone.
. . . or . . .
1. Press the Spkr button on your
data telephone or hang up.
DATA CALL WHILE ON A VOICE CALL
SIMULTANEOUS VOICE AND DATA TRANSMISSION BETWEEN THE
SAME DATA TELEPHONES
Without interrupting their voice conversation, two data telephones can
establish a data call between each other.
The DATA LED will turn ON and be steady red.
A data path will automatically be established between the personal
computers and/or terminals connected to the two data telephones. The
voice call will continue uninterrupted.
Exchange data using your terminal or PC software program as required.
While data is being exchanged, the voice call will continue uninterrupted.
TERMINATING THE CALL
The data call will be terminated; the voice call, if not terminated earlier,
will continue.
The voice call will be terminated; the data call, if not terminated earlier,
will continue.
DATA CALL TO DATA PHONE WHILE ON A
VOICE CALL TO ANOTHER PHONE
SIMULTANEOUS VOICE AND DATA TRANSMISSION TO DIFFERENT
DATA TELEPHONES
While established on an internal or external voice call, a data telephone
can make a data call to another internal or external data telephone or
data device. For example, Phone 1 can be on a voice call to Phone 2. At
the same time, Phone 1 can also be transmitting data to Phone 3.
STRATA DK USER INSTRUCTIONS
2-6

The voice call will be placed on hold.
To make a data call, see “Data Call to Internal Printer or Other Data
Device” or “Data Call to Another Internal Data Telephone's PC or
Terminal” earlier in this chapter.
Exchange data using your terminal or PC software program as required.
The voice call will be reestablished, and the data call will continue
uninterrupted.
The data call will be terminated; the voice call, if not terminated earlier,
will continue.
The voice call will be terminated; the data call, if not terminated earlier,
will continue.
OUTGOING DATA CALL—DIALING THROUGH
THE SYSTEM MODEM POOL
A PC involved in this type of call must be running a communications
software program.
Before making this call, verify that the communication parameters of your
PC or terminal match those of the device that your are calling.
NOTE:
To allow the modem to be placed into the command mode while keeping
the DIU in the communications mode, it is recommended that the
modem's escape sequence be changed from +++ to some other
sequence before beginning. For example: Using the ATS2 command,
send ATS2=36 to the modem to change its escape sequence to $$$ .
Also, issue AT&D2 to the modem so that it will terminate calls properly.
Store these commands in the modem's "power up" memory.
To make a data call while on a
voice call:
1. While on a voice call, press the
Hold button on your data
telephone.
2. Make a data call to a different
data telephone or data device.
3. Data can be exchanged.
To return to the voice call:
1. Press the held CO or IN button
on your data telephone.
To terminate the voice or data
call:
1. Press Data Release on your
data telephone.
. . . or . . .
1. Press the Spkr button on your
data telephone or hang up.
STRATA DK USER INSTRUCTIONS
2-7

To verify communications from
your PC or terminal:
1. Type A T, and press
on your PC or
terminal.
To dial an internal modem from
your PC or terminal:
1. Type A T D D, the station
number of the DIU connected
to the system modem (pool),
and then press .
Enter
Enter
If the modem is connected to an outside telephone line, changing the
modem escape sequence allows the modem to hang up and release the
telephone line with the ATH command issued from the PC or terminal
keyboard.
VERIFYING COMMUNICATIONS
Wait for:
To display on your PC or terminal screen
This display verifies that communications exist between your PC or
terminal and your data telephone.
NOTES:
1. AT commands must be typed as capital letters (use caps lock).
2. AT commands will appear on your PC or terminal screen as you type
them.
DIALING AN INTERNAL MODEM
The Data Call and Modem LEDs will turn ON and be steady red after you
press .
Wait for:
To display on your PC or terminal screen
This display indicates that a connection has been established between
your PC or terminal and the PDIU-DS connected to the system modem
(pool). XXXX indicates the data transmission speed, and YYY is the
station number of the PDIU-DS connected to the system modem (pool).
The system DIUs at this time are transparent and in the communication
mode, ready to pass data.The system modem is in the command mode,
ready to receive AT dialing commands.
Entry Example: If the station number of the DIU connected to the system
ATDDYYY
CONNECTXXXX
Enter
AT
OK
STRATA DK USER INSTRUCTIONS
2-8