Toshiba Strata Dk Personal Computer Data Interface User Guide

							Features
Switch From Outside Voice Call to Data Call
Strata DK PC/Data Interface 5/9923
Switch From Outside Voice Call to Data Call
While on a CO line voice call, an internal (Strata DK system) data telephone can 
switch to a data call on the same line.
Before making the call, verify that the communication parameters of your internal PC 
or terminal match those of the external modem and PC or terminal. PCs involved in 
this call must be running a communications software program.
The external telephone must share its CO line with a modem connected to a PC or 
terminal. The external CO line must be plugged into the external modem jack labeled 
“LINE”, and the external telephone must be plugged into the modem jack labeled 
“PHONE”. The internal modem must be installed and programmed in the system 
modem pool configuration (i.e., the modem is connected to a system standard 
telephone port, not a CO line).2. Type ATH
 and then 
press Enter
 on the 
external PC or 
terminal.The following screen displays on your (external) PC or 
terminal screen.
This display indicates that the call is terminated.
NoteAlways terminate incoming data calls from the 
external PC or terminal.
ATH
OK 
						

							Features
Switch From Outside Voice Call to Data Call
24Strata DK PC/Data Interface 5/99
l
1. Verify 
communications from 
your PC or terminal  
by typing AT
 and 
pressing Enter
 on 
your PC or terminal.The following screen displays on your PC or terminal 
screen.
This display verifies that communications exist 
between your PC or terminal and your data telephone.
NoteAT commands must be typed as capital letters 
(use caps lock), and they appear on your PC or 
terminal screen as you type them.
2. Establish an external 
voice call. The normal method establishes your voice call. You 
can do this before verifying communications.
3. Press 
0RGHP on 
your data telephone.The Modem LED flashes red.
This flash indicates that a system modem is reserved. 
The modem is reserved for 60 seconds.  The voice call 
continues during this time.
4. Press the 
0RGHP 
button again.If the LED turns OFF before a modem is accessed, this 
reserves another 60 seconds. The voice call continues 
during this time.
5. Press
DWD&DOO on 
your data telephone.The Data Call LED lights red. The Modem LED stops 
flashing and stays red.
The CO line you were talking on is picked up by the 
internal modem. The CO line LED blinks and changes 
from green to red, or if the call was on [DN], the [DN] 
LED turns OFF.
AT
OK 
						

							Features
Switch From Outside Voice Call to Data Call
Strata DK PC/Data Interface 5/9925
Switch Back to the Voice Call Using Privacy Override
To perform this function, your data telephone must have Privacy Override assigned in 
system programming.6. Type ATD#42
 from 
your PC or terminal, 
and then press 
Enter
.The following screen displays on your PC or terminal 
screen.
This display indicates that the internal modem has 
gone off-key and originated. XXXX indicates the data 
transmission speed.
7. Type ATA
 from the 
external terminal or 
PC, and then press 
Enter 
(do not hang 
up the external 
telephone).The external modem answers.
Wait 3~20 seconds the following screen to display on 
the external PC or terminal screen.
8. Exchange the data. This display indicates that a data path has been 
established. XXXX indicates the data transmission 
speed.
Exchange data using your terminal or PC software 
program. The voice call is on-hold during the data 
exchange. The external telephone can be placed on-
hook or remain off-hook during data transmission.
1. Make sure that the 
external telephone is 
off-hook.If the voice call is on a CO Line that appears on your 
[DN] button, refer to the following procedure, “To 
switch back to the voice call using Executive 
Override.”
ATD42
CONNECTXXXX
ATA
CONNECTXXXX 
						

							Features
Switch From Outside Voice Call to Data Call
26Strata DK PC/Data Interface 5/99
Switch Back to the Voice Call Using Executive Override
If you are on a data call, you can switch back to a voice call from a data call using 
Privacy or Executive Override, but the data telephone must have Privacy or Executive 
Override assigned in system programming.2. Press the busy CO 
/LQHbutton on the 
data telephone.The Data and Modem LEDs turn OFF, and the CO line 
LED changes from red to green.
The following screen displays on both PC and/or 
terminal screens.
The system modem is dropped, and the CO line is 
transferred to the voice path. The external modem goes 
on-hook, and the voice path connects to the external 
telephone.
1. Make sure that the 
external telephone is 
off-hook.
If the voice call did 
not appear on your 
[DN] button, see the 
previous section, 
“Switch Back to the 
Voice Call Using 
Privacy Override”on 
Page 25.
NO CARRIER 
						

							Features
Personal Computer Dialing of Voice Calls
Strata DK PC/Data Interface 5/9927
äTo terminate the call when in the voice connection state
äTo terminate the call if in the data connection state
Personal Computer Dialing of Voice Calls
A PC which contains a software package and provides a dialing feature can be used to 
place outgoing voice calls. Typically, Personal Information Management or 
Appointment type software packages contain dialing programs. The dialing program 
must be Hayes modem compatible; however, when using the Toshiba Data Telephone, 
a modem or special line is not required.2. Press a [DN] on the 
data telephone, dial 
the modem’s standard 
telephone port 
number.
3. Press 3
when you 
hear busy tone.The Data and Modem LEDs turns OFF, and the CO 
line LED changes from red to green.
The following screen displays on both PC and/or 
terminal screens.
The system modem is dropped, and the CO line is 
transferred to the voice path. The external modem goes 
on-hook, and the voice path connects to the external 
telephone.
äPress 
6SNU on your 
data telephone or go 
on-hook.The CO line or [DN] LED turns OFF and the voice call 
terminates.
äPress 
DWD5HOHDVH
on your data 
telephone.The Data, Modem, and CO line LEDs turn off and the 
data call terminates.
NO CARRIER 
						

							Features
Personal Computer Dialing of Voice Calls
28Strata DK PC/Data Interface 5/99
Dialing programs vary, but most require that you enter the telephone number to be 
called in a designated field or space. When using a Toshiba Data Telephone you must 
also enter the outgoing call access code in front of the telephone number to be called.
Example: If the telephone number is 1-714-583-3700, the following sequence should 
be entered in the telephone number field:
CO Line Access Code + 17145833700
When the CO line access code and telephone number is entered into the dialing field 
properly and the computer software dialing is initiated, the PC automatically sends the 
following sequence to the Data Telephone:
ATDT
 + CO Line Access Code + 17145833700
NoteATDT is the Hayes modem dialing command automatically inserted by the 
computer dialing software.
When the Data Telephone receives the above dialing command, it automatically 
accesses an outgoing CO line and dials 17145833700
. The Data Telephone’s [DN] 
or CO line button LED turns ON (green), and its LCD (if equipped) displays the 
dialed digits.
Table 4 CO Line Access Codes
SystemCO Line Access
DK14
a or a
DK16e and DK16a or a
DK40i and DK40a or a
DK424 (RCTUA)a or a
DK424 (RCTUBA/BB)a or a
DK424 (RCTUC/D)a or a
DK424 (RCTUE/F)aor a 
						

							Strata DK PC/Data Interface 5/9929
Mode Definitions3
This chapter contains advanced information for the sophisticated data communication 
user. The contents are not required for typical operation.
Data Communications Mode
When in the Data Communications mode, the RPCI and DIU can operate in either the 
Command Mode or the Communication Mode. All the dialing, answering, and 
disconnecting activities related to a data call take place during the command mode 
using standard Hayes “AT” commands. The actual data operation—file transferring, 
printing, etc.—takes place during the communication mode.
Switching Between Data Communications and TAPI Modes
The PC software normally controls the RPCI operating mode (TAPI or DATA). To 
switch between modes, the PC software or manual keyboard must send the following 
chapters to the RPCI:
©When in the TAPI mode, send the HEX (FØ), decimal 240, or the ò (ASCII 
character) to the RPCI to switch it to the Data Communications mode. 
(Unplugging the telephone cord and then reconnecting it also resets the RPCI to 
the Data Communications mode.) 
						

							Mode Definitions
Data Communications Mode
30Strata DK PC/Data Interface 5/99
©When in the Data Communications mode, send (ATCØ) to the RPCI to switch it 
to the TAPI mode.
©RPCI mode switching should be performed automatically by the application 
programs running on the PC connected to the RPCI-DI.
Data Communications Command Mode
A RPCI or DIU must be told what number to dial, whether to answer, or whether to 
disconnect. These instructions, when typed from the keyboard of a PC or terminal, are 
called AT commands. A complete list of RPCI or DIU-supported AT commands is 
provided in Table 4 on Page 28. RPCIs or DIUs remain in or enter into the Command 
Mode when any of the following actions occur.
©The RPCI and DIU are powered up by connecting it to the Strata DK system via 
the modular jack/cord. The RPCI powers up in the Data Communications mode as 
opposed to the TAPI mode.
©The reset (Z) AT command is issued.
©No carrier is detected while originating or answering a data call.
©The carrier signal from a remote DIU or modem is lost.
©A semicolon (;) is entered at the end of the dial (D) command.
©The escape sequence (+++
) is entered while the RPCI or DIU is in the 
Communication Mode (on-line mode).
NoteAlways change the escape sequence of a RPCI-DI connected to your PC to 
avoid operation conflicts. Consult the documentation provided by the modem 
manufacturer for documentation on the ATS2 command.
Other Command Mode features—Result Codes, Dialing Modifiers, and S-Registers—
are explained below.
Result Codes: Displayed on the terminal or PC screen, Result Codes are RPCI and 
DIU responses to AT commands and end-to-end connections and disconnections. 
DIUs support the Result Codes in Table 6 on Page 35.
Dialing Modifiers: Dialing Modifiers do exactly what their name indicates. They can 
be issued anywhere in the dialing string and provide additional dialing instructions.  
						

							Mode Definitions
Data Communications Mode
Strata DK PC/Data Interface 5/9931
Dialing Modifiers can be used for a variety of applications, including tone dialing, dial 
pulse dialing, and pause and flash inserting. DIUs support the Dialing Modifiers listed 
in Table 9 on Page 36.
S-Registers: RPCIs and DIUs can be configured for specific applications with S-
Registers, which can only be changed or checked during the Command Mode. When 
power is first applied to it and whenever its modular line cord is temporarily 
disconnected and then reconnected, the RPCI and DIU initializes the S-Registers to 
the default values and enters the Command Mode. DIUs support the S-Registers listed 
in Table 7 on Page 35. To check or change an S-Register, refer to the following 
procedure:
äTo check the value of an S-Register
äTo change the value of an S-Register
Notes
lA PC must be running communications software or a desk organizer dialing 
program (be on-line) to issue AT commands. AT commands cannot be 
inputted from a data telephone’s dial pad, a PC DOS prompt, word processor, 
database, or spread sheet-type programs. 
lAT commands are executed by the DIUs only after the carriage return key is 
pressed. The carriage return is referred to as Enter in this guide. On some 
keyboards, though, this key may have a different designation, such as 
RETURN, , ENTER, etc.
lAll AT commands must be typed as capital letters. äType ATSX? and 
press Enter (X is 
the S-Register you 
want to check).The value along with the “OK” Result Code is 
displayed.
äType ATSX=Y and 
press Enter (X is 
the S-Register you 
want to change and Y 
is its value).The S-Register value is now changed, and the screen 
displays “OK”. (If the entry is invalid, “ERROR” is 
displayed in most cases.) 
						

							Mode Definitions
Data Communications Mode
32Strata DK PC/Data Interface 5/99
lDIUs can operate at up to 19,200 bps with manual dialing from a  data 
telephone. If keyboard dialing with AT commands, the DIUs can operate at up 
to 9600 bps.
Data Communications Mode (On-line state)
A PDIU-DI automatically enters the communication mode when its call to another 
DIU is answered. At this point, the desired data operation—file transfer, printing, etc., 
can begin. DIUs remain in the Communications Mode until the data operation is 
manually terminated or the escape sequence (see “Switching Between Data 
Communication Modes”on Page 32) is issued. A calling PDIU-DI switches to the 
Communication Mode from the Command Mode when the following sequences 
occur:
©When the ATD
 or ATDD
 command strings are typed and Enter
 is pressed, the 
called DIU answers (manually or automatically).
©When the ATO
 command string is typed and Enter
 is pressed, a DIU-to-DIU 
data connection is established (see “Switching Between Data Communication 
Modes”on Page 32).
©When a remote modem issues the ATA command string after the calling DIU 
issues the ATD42 command string, a CO line voice call is switched to a data call 
using the system modem pool.
NoteA called DIU switches to the Communication Mode when it answers, 
automatically or manually.
Switching Between Data Communication Modes
Once a PRCI or DIU is connected to another RPCI or DIU and in the Communication 
Mode, it can be switched back to the Command Mode with the escape sequence and 
then back again to the Communication Mode with the re-enter command. This feature 
is helpful when you change a parameter after establishing a data call. Parameters can 
only be changed while in the Command Mode.
©Escape Sequence: To escape from the Communication Mode, hold down the 
Shift key and type +++ (it is not necessary to press Enter). 
©Re-enter Sequence: To re-enter the Communication Mode, type ATO and press 
Enter.