IBM 3708 Service manual

End-User Reference
I~i~~3708
Network
Conversion Unit
GA27-3765-01

Second Edition (February 1988)
This edition obsoletes GA27-3765-0.
Changes are made periodically
to the information herein; before using this pUblication in connection with the
operation
ofIBM systems or equipment, consult the latest IBM System/370, 30XX and 4300 Processors
Bibliography, GC20-0001; System/38 Bibliography, GH30-0233; and8100 Bibliography, GC20-8100, for the
editions
that are applicable and current.
Any reference to
an IBM licensed program in this document is not intended to state or imply that only IBM's
licensed product may be used. Any functionally equivalent program may be used instead.
It is possible that
this material may contain reference to, or information about, IBM products (machines and programs),
programming,
or services that are not announced in your country. Such references or information must not
be construed to mean that IBM intends to announce such IBM products, programming, or services in your
country.
Publications are
not stocked at the address given below; requests for IBM publications should be made to
your IBM representative or to the IBM branch office serving your locality.
A form for reader's comments is provided
at the back of this publication. If the form has been removed,
comments may be addressed to IBM Corporation, Communication Products Information Development,
Department B02, PO Box 12195, Research Triangle Park, North Carolina, U.S.A. 27709. IBM may use or
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obligation whatever.
You may, of course, continue to use the information you supply.
©Copyright 1986,1988

iii

Federal Communications Commission (FCC) Statement
Warning: This equipment generates, uses, and can radiate radio frequency energy and
if not installed and
used in accordance with the instruction manual, may cause interference to radio communications.
It has been
tested and found to comply with the limits for a Class A computing device pursuant to Subpart J
Df Part 15
of FCC rules, which are designed to provide reasonable protection against such interference when operated in
a commercial environment. Operation
of this equipment in a residential area is likely to cause interference in
which case the user
at his own expense will be required to take whatever measures may be required to correct
the interference.
Instructions to User:
In many instances, shielded cables and connectors must be used for connection to
peripherals. Proper IBM cables are available from authorized dealers. The manufacturer is
not responsible
for any radio
or television interference caused by using other than the recommended cables or by
unauthorized modifications to this equipment;
it is the responsibility of the user to correct such interference.
If necessary, the user should consult the dealer or an experienced radio/television technician for additional
suggestions. The user may find the following booklet prepared by the Federal Communications Commission
helpful:
How to Identify and Resolve Radio-TV Interference Problems
This booklet is available from the following:
FOB Public Contact Branch
Room
725
1919 M St. NW
Washington, DC 20554
Tele. [phone]
Consumer Assistance and
Small Business Division
Room 254
1919 M St. NW
Washington, DC 20554
Tele. [phone]
This! manual contains several trademarks and registered trademarks. Viewpoint is a registered trademark of
Applied Digital Data Systems, Inc. Beehive is a trademark of Beehive International. Dasher is a registered
trademark
of the Data General Corporation. DEC is a registered trademark of the Digital Equipment
Corporation. ESPRIT I and ESPRIT II are trademarks
of Esprit Systems, Inc. FALCO 500 is a registered
trademark
of Falco Data Products, Inc. Dumb Terminal is a registered trademark of Lear Siegler, Inc.
Displayphone
is a trademark of Northern Telecom, Inc. TeleVideo is a registered trademark of TeleVideo
Systems, Inc. WY-50 is a registered trademark
of Wyse Technology.
iv IBM 3708 End-User Reference

About This Book
This book is a reference for users of terminals attached to an IBM 3708 Network
Conversion Unit. Footnotes in Chapters 1 through 4 are provided for the system
administrator
or system engineer who is responsible for the 3708. The footnotes
may
not be of interest to terminal operators and other end users.
How This Book Is Organized
This book contains four chapters and three appendixes:
Chapter
1, "Logging on to the 3708" gives instructions for logging on to the 3708
and lists any error messages that may be displayed.
Chapter
2, "Operating in Full-Screen Mode" describes how to operate in protocol
conversion mode (full-screen mode).
Chapter
3, "Operating in Line-by-Line and ASCII Pass-through Modes" describes
how to operate in protocol enveloping (line-by-line)
and ASCII pass-through modes.
Chapter 4, "Common Problems
and What to Do" describes how to solve common
problems you may have during logging on or operating in protocol conversion
or
protocol enveloping modes.
4Ppendix A, "Flowchart
of 3708 Logon Process" contains a flow diagram of the
logon process.
Appendix
B, "Setting up Your Terminal" contains the recommended switch settings
for the supported terminals.
Appendix C, "Terminal Keyboard Maps" contains keyboard maps for the terminals
supported
by the 3708.
This
book also contains a glossary and an index.
Related 3708 Library Information
The following list describes books and information for the 3708:
• IBM 3708 Network Conversion Unit Planning and Installation, GA27-3766,
describes how you can plan for and install the 3708.
• IBM 3708 Network Conversion Unit Setup, GA27-361 1, is shipped with the 3708
and describes how to set up
and test the 3708, how to handle setup problems,
and how to prepare the 3708 for relocation.
• IBM 3708 Network Conversion Unit Description, GA27-3768, describes the
external interfaces and operational characteristics
of the 3708.
• IBM 3708 Network Conversion Unit Problem Determination, GA27-3767,
provides procedures for solving problems with the 3708.
• Unpacking instructions are printed
on the 3708 shipping carton and show how
to unpack the 3708.
About This Book V

• IBM 3708 Network Conversion Unit Problem Report, GA27-3638, which is
shipped with the 3708, provides a means
of recording problem diagnosis
information, which is used by repair center representatives.
• IBM 3708 Network Conversion Unit Registration Address Form, GX27-3734, is
shipped with the 3708. This card must be completed and returned to IBM for
you to automatically receive notification
of changes in the 3708 microcode.
• IBM
3708 reference cards describe the keyboard functions of ASCII displays
that can
be connected to a 3708 and describe the general procedures for terminal
users.
See Appendix C, "Terminal Keyboard Maps" for a list of the end-user
devices and the reference card order numbers.
vi IBM 3708 End-User Reference

Changes Since the Last Edition
This edition contains the following new information:
• Instructions for logging on to the
3708 using the short logon screens
• Descriptions
of two new non-3270 functions. The following features are
available by entering key sequences:
-Terminal logon initialization sequence (TLIS) refresh
-2/4 color toggle
• Switch settings and keyboard maps for the following terminals
FALCO 500®
IBM
3151
-IBM 3163/3164 VT100/3708 Emulation Cartridge (Feature 8313)
WY-50®.
Changes Since the Last Edition vii

viii IBM 3708 End-User Reference

Contents
Chapter 1. Logging on to the 3708 1-1
Things to Know Before Logging on 1-1
Full Screen Format and Operation 1-1
Input Area and Responses 1-2
Short Screen Format and Operation 1-3
Operation Without Logon Screens .. 1-3
Other Features ............... 1-4
Preventing the Display of Entire Screens 1-4
Disconnecting from the 3708 1-4
Logging on ................. 1-5
Step 1. Establishing the Connection 1-5
Step 2. Entering the Port Password 1-5
Step 3. Entering the Terminal Type 1-6
Step 4. Selecting a Host 1-7
SNA Hosts .............. 1-7
ASCII Hosts ............. 1-7
Step 5. Logging on to the SNA Host 1-8
Error Messages ............... 1-9
Chapter 2. Operating in Full-Screen Mode 2-1
Understanding the Display Image 2-2
Input Fields 2-2
Numeric Fields
2-3
Protected Fields 2-4
Nondisplay Fields 2-4
Field Attribute Locations 2-4
Using Your Keyboard 2-5
Keyboard Maps
...... 2-5
Terminal Controlled Keys 2-5
3270 Functions 2-5
Non-3270 Functions 2-10
Reading the Status Line 2-12
Status Line Format . 2-12
Ready Status
... 2-12
Device Emulation 2-12
Session Indicator
2-13
Session Status 2-13
Insert Status 2-16
Null Blank Status 2-16
Type-Ahead Status 2-16
Printer Status 2-16
NNN Codes ..... 2-17
Communicating with the Host Control Program
2-18
Using Light Pen Emulation 2-19
Selection Fields
........... 2-19
Attention Fields
........... 2-19
Printing Screen Images (Local Copy) 2-20
Print
ID ........ 2-20
Changing the Print
ID 2-20
Printing . . . . . . . . .
2-21
Printer not Working 2-21
Cancelling a Print Request 2-21
Contents ix

Host-Initiated Local Copy .................. .
Using a Display With an Attached Printer
..... '" .... .
Functions
that Control Data Flow ............. .
Devices Requiring Manual Intervention
.................... .
Differences
in Function for the 3270 and Terminals Attached to 3708
Chapter 3. Operating in Line-by-Line anclASCD Pass-through Modes
Line-by-Line Mode
...................... .
ASCII Pass-through Mode
.............................. .
Chapter 4. Common Problems and What to Do
.................. .
Common Problems during 3708 Logon
...................... .
Common Problems
in Full-Screen Mode (Protocol Conversion) ........ .
Common Problems in Line-by-Line Mode (Protocol Enveloping)
....... .
2-21
2-22
2-22
2-23
2-24
3-1
3-1
3-2
4-1
4-2
4-4
4-6
Appendix
A. Flowchart of 3708 Logon Process ..... :............. A-I
"
Appendix B. Setting up Your Terminal ....................... .
Using Scrolling
..................................... .
Setting
Your Terminal's Switches ................ .
Default Terminal Switch Settings
........................ .
ADDS Viewpoint®
.... . .......................... .
ADDS Viewpoint®/78
............................... .
Beehive™ ATL-78
................... .
Data General® D210 Display Terminal ....... . ...... .
DEC® VT100 and VT52
................ . ........ .
DEC® VT220 (Emulating a VT100)
......... . ........ .
DEC®VT220 .................................... .
FALCO 500® ...... . .......................... .
Hazeltine ESPRIT
ITM ....
Hazeltine ESPRIT IITM
Hazeltine 1500 ....... .
Hewlett-Packard 2621B Interactive Terminal
......... . ..... .
IBM
PCfFTTERM (Color and Monochrome) ....... .
IBM
PC in 3101 Emulation Mode ....................... .
IBM
3101 Models 10, 12, 13,20,22,23 ................... .
IBM
3151 ASCII Display Station ....................... .
IBM
3161 ASCII Display Station .................... .
IBM 3162 ASCII Display Station
................... .
IBM 3163 ASCII Display Station
.................... .
IBM 3164 ASCII Display Station
.................... .
Lear Siegler
ADM 24E Video Display Terminal .............. .
Lear Siegler
ADM 3A Dumb Terminal® .................. ..
Lear Siegler ADM 31 Intermediate Terminal™ Video Display Unit ... .
Northern Telecom Displayphone™
.............. .
ROLM® Cypress™, Cedar™,
and JuniperTM ....... .
Teletype 5410 Asynchronous Display Terminal
............... .
Teletype 5420 Buffered Display
........................ .
TeleVideo® 910
.................................. .
TeleVideo® 912C
................................. .
TeleVideo® 950
....................... . ...... .
WY-50®
................ . .............. .
Appendix C. Terminal Keyboard Maps
...... . ...... .
IBM
3101 (Models 10, 12, 13, 20, 22, 23) ........ .
IBM
PC Emulating a 3101 ................... .
X IBM 3708 End-User Reference
B-1
B-1
B-1
B-2
B-2
B-3
B-4
B-5
B-6
B-7
B-8
B-9
B-I0
B-ll
B-12
B-13
B-14
B-15
B-16
B-17
B-19
B-21
B-23
B-25
B-27
B-29
B-30
B-31
B-32
B-33
B-34
B-35
B-36
B-37
B-38
C-I
C-2
C-3

IBM 31S1, 3161, 3162,3163, and 3164 ...................... C-4
IBM 31S1, 3161, 3162, 3163, and 3164 (3708 Feature) ............. C-S
ADDS VIEWPOINT® ............................... C-6
ADDS VIEWPOINT®j78 ............................. C-7
BEEHIVE™ ATL-078 ............................... C-8
DATA GENERAL DASHER® D210 ..................... C-9
DEC® VTS2 .................................... C-10
DEC® VT100 ................................... C-1I
DEC® VT220 ................................... C-12
DEC® VT220 Emulating a DEC VT100 ................... C-13
FALCO® SOO ................................... C-14
HAZELTINE ESPRIT I® and II® ...................... C-1S
HAZELTINE lS00 ................................ C-16
HEWLETT-PACKARD 2621B . . . . . . . . . . . . . . . . . . . . . . .. C-17
LEAR SIEGLER ADM 3A Dumb Terminal® ............... C-18
LEAR SIEGLER ADM 24E .......................... C-19
LEAR SIEGLER ADM 31 ........................... C-20
NORTHERN TELECOM DISPLAYPHONE™ .............. C-21
ROLM® CEDAR™ ............................... C-22
ROLM® CYPRESS™ .............................. C-23
ROLM® JUNIPER™ .............................. C-24
TELETYPE S410 ................................. C-2S
TELETYPE 5420 ................................. C-26
TELEVIDEO® 910 ................................ C-2?
TELEVIDEO® 912C ............................... C-28
TELEVIDEO® 9S0 ................................ C-29
WY-SO® ...................................... C-30
USER-DEFINED TERMINAL ......................... C-31
List of Abbreviations ................................... X-I
Glossary .......................................... X-S
Index ............................................ X-9
Contents xi

xii
IBM
3708
End-User Reference

Figures
1-1.
1-2.
1-3.
1-4.
1-5.
1-6.
2-1.
2-2.
A-I.
A 3708 Logon Screen -Full Screen Format
A 3708 Logon Screen -Short Screen
Format
3708 Port Password Screen (Cl) ...... .
3708 Terminal Type Selection Screen (C2)
3708 Host Selection Screen (C3)
3708 Logon Indication Screen (C4)
Example
of a Display Image
IBM 3708 Status Line Format
Flowchart
of the IBM 3708 Logon Process
1-1
1-3
1-5
1-6
1-7
1-8
2-3
2-12
A-2
Figures xiii

xiv IBM
3708 End-User Reference

Chapter 1. Logging on to the 3708
This chapter describes the 3708 logon screens and gives instructions for logging on to
the 3708.
It also lists error messages that may be displayed.
Things to Know Before Logging on
There are four logon screens:
Cl -Port Password
C2 -Terminal Type
C3 -Host Selection
C4 -Logon Indication.
Depending on how the 3708
is configured, you may see these logon screens displayed
in their full
or short screen formats. The 3708 configuration also determines how
many
of the screens you see. You may see all, none, or only some of the logon
screens.
Full Screen Format and Operation
When you log on to the 3708, you might see full screens like this:
(l)======IBM 370B===EC A5BB09======RID 370B-00B-OI-0000222========PORT 07=======
(2)C3: Type the number of the desired connection:
(3)1-HOSTNAMl
2-HOSTNAM2
3-HOSTNAM3
4-HOSTNAM4
(4) To disconnect from the 370B. type "1/#11#."
(5)
(6)===>
Figure 1-1. A 3708 Logon Screen -Full Screen Format
(1) contains the following information:
• EC number -The Engineering Change number for the
3708
• RID number -The Repair Identification number for the 3708
• Port number -The 3708 port to which you are connected.
(2) contains the following information:
• The screen number (for example, C3)
• The instructions for the screen (for example,
Type the number of the des ired
connection:)
(3) contains the responses that you may select (not all logon screens have this area).
Chapter 1. Logging on to the 3708 1-1

(4}contains the message: To disconnect from the 3708 type "####."
(5) is the message line; if you enter an invalid response, an error message is
displayed here.
(6) is the input area (the cursor is positioned here automatically when the 3708
completes transmitting
the screen to your display).
Note: During the 3708 logon screen processing,
your display is not operating in
full-screen mode. Full screen editing functions, such as
CLEAR SCREEN and
HOME cannot be used. Therefore, the data for each screen may not appear at the
top of the display.
Input Area and Responses
To type your response, use:
• Alphabetic keys
(for example, A, e,P)
• Numeric keys (for example, 1,2,3)
• Symbolic keys (for example,%, &, $)
• The backspace key (the key that sends a backspace character).
You cannot use editing keys (for example, delete or insert).
Note:
For many terminals, the key labeled as a Cursor Left key does not send a
backspace character, even though
it may appear to move the cursor back one
position
on your screen. For example, if you type "I", "cursor left", and "2", the I
is
not replaced by the 2 unless the cursor left key actually generates a backspace
character.
To enter your response, use one of the following keys as the ENTER key:
• A key
that generates a carriage return (CR) character (normally, this would be
the key marked
ENTER, SEND, or NEW LINE)
• A period key (.)
• A key
that has been set up for the port as a line turn-around characterCl.
The keyboard maps in Appendix C, "Terminal Keyboard Maps" show what
characters
or functions each key is assigned. Refer to Appendix C or your system
administrator
if you do not know what key to use.
Cl Configuration Note: The line turn-around characters are one of the protocol enveloping configuration parameters.
For the37Q8,the.portoptiqt\ OPERATING MODE must be Jor 2·fot the protocolenveloping options to be . '.' .
. pre~nt~; ..... . '.
1-2 IBM 3708 End-User Reference

I
I
I
I
Short Screen Format and Operation
If your configuration includes short logon screens, you may see screens like this:
(l)======IBM 3708===EC A58S09======RIO 3708-008-01-0000222========PORT 07=======
(2)C2: Type the number of your terminal:
(3)===> _
Figure 1-2. A 3708 Logon Screen -Short Screen Format
(1) contains the following information:
•
EC number - The Engineering Change number for the 3708
•
RID number - The Repair Identification number for the 3708
•
Port number - The 3708 port to which you are connected.
(2) contains the following information:
•
The screen number (for example, C2)
•
The instructions for the screen (for example, Type the number of your
termi na 1:).
(3) contains the input area (the cursor is positioned here automatically when the
3708 completes transmitting
the screen to your device).
Note: During the 3708 logon screen processing, your display is not operating in
full-screen mode. Full screen editing functions, such as CLEAR SCREEN and
HOME cannot be used.c2 Therefore, the data for each screen may not appear at the
top of the display.
If the 3708 port has been configured for short logon screens, the 3708 transmits only
the screen divider, screen title, and the input line for each screen. If you have a
question,
enter a question mark (?) to display the information for a full screen. The
3708 also displays the full logon screen if you enter an invalid response. The
full-screen display continues until you enter a correct response. After you supply the
correct response, the 3708 displays the next logon screen configured for that port.
Operation Without Logon Screens
If you do not have logon screens, the first information normally sent to your
terminal (after a physical connection has been established) is a message from your
host. At this point, anything you enter at your terminal is sent to the host.
T1
C2 Configuration Note: If the port is configured for protocol conversion mode only, and the terminal type is
recognized by the 3708, the screen is cleared before logon screens are displayed. The screen is cleared only if no
message
is to be displayed on the message line. The terminal types can be chosen by the user at logon or defined
durit):gport configuration for default terminal types.
TITetlutiialNote: The SSCP-SLUsesslonis used forthis traffic.
Chapter
1. Logging on to the 3708 1-3

Other Features During the logon process, you can prevent the entire logon screen from being
displayed,
or you can disconnect from the 3708.
Preventing the Display of Entire Screens
To prevent the entire screen from being displayed, press the BREAK key.c3 You
may want to do this
if you have a remote connection with a slow line speed. After
you press the BREAK key, input your response.
Disconnecting from the 3708
To disconnect from the 3708 during the logon process, type #### followed by one of
the ENTER keys. (The period is included inside the quotes on the screen because
the period can used as an ENTER
key. Refer to "Input Area and Responses" on
page 1-2.) The 3708 disconnects your modem or tenninal and then attempts to
establish the connection again. For a directly attached tenninal, there
is a short
pause (there may be
an indication on your device that host communication has been
lost), then the first configured logon screen appears again.
For a remotely attached
tenninal, you need to dial the 3708 again to log on.
C3 Configuration Note: For the BREAK to be accepted, the port must be configured as a half duplex control unit.
For the 3708, the protocol enveloping option FULL DUPLEX CONTROL UNIT must be set to o.
1-4 IBM 3708 End-User Reference

Logging on
The following discussion guides you through the steps required for logging on.
Note: Refer to
"Error Messages" on page 1-9 for all logon error messages.
Step 1. Establishing the Connection
If the terminal is directly connected, turn on the power to the terminal. If the
terminal is remotely connected, turn on the power to the terminal
and modem, then
establish the connection through the modem.
After establishing the connection, you should
see the first configured logon screen.
If you do not see a logon screen, press the carriage return key on your terminal (this
could be the
ENTER, SEND, or NEW LINE key; see your system administrator if
you do not know which key to press). If no logon screens appear or the Logon
Indication Screen (C4) appears,C4 go to step
5.
Step 2. Entering the Port Password
If a logon screen other than the port password screen (CI)C5 appears, go to step 3.
If screen CI appears, type your password, then press the ENTER key.
======IBM 3708===EC A58809======RID 3708-008-01-0000222========PORT 07=======
Cl: Type port password
To disconnect from the 3708, type 1/####.1/
====>
Figure 1-3. 3708 Port Password Screen (Cl)
If you enter the password incorrectly, INCORRECT PASSWORD is displayed in the
message line,
and you can try again several times. C6 If you do not enter the correct
password before reaching the configured number
of tries, the device is disconnected
automatically.
C4 Configuration Note: If the port has been set to run without the 3708 logon screens (LOGON SCREENS
EXCLUDED = Y), no logon screens appear. Appendix A, "Flowchart of 3708 Logon Process" is a diagram
showing the logon process, including how various configuration options affect the flow through the 3708 logon
screens.
C5 Configuration Note: For the 3708, if port option PASSWORD is set to blanks or the port password screen is
suppressed during configuration, the port password screen is not displayed at all.
C6 Configuration Note: For the 3708, the number of times you can enter a password before being disconnected is
determined by
port option RETRY LIMIT.
Chapter
1. Logging on to the 3708 1-5