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Simtel MSDOS 1992 June
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pcpursut
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TELE_ITI.TXT
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Telenet ITI Parameters
Summary of Telenet ITI Parameters
---------------------------------
Para- Para-
meter Description (Default Value) meter Description (Default Value)
----- --------------------------- ----- ---------------------------
1 Line feed Insertion (0) 31+ Interrupt Character (0)
2 Network Message Display (0) 32 Automatic Hang-up (0)
3 Echo (1) 33+ Flush Output (0)
4 Echo Mask (163) 34 Transmit on Timers (1)
5 Transmit Mask (2) 35 Idle Timer (80)
6* Buffer Size (0) 36 Interval Timer (80)
7* Command Mask (127) 37 Network Usage Display (0)
8* Command Mask (3) 38 Carriage Return PAD (Variable)
9 Carriage Return PAD (Fixed) 39 Padding Options (1)
10 Linefeed Padding 40 Inset on Break (0)
11 Tab Padding 41 PAD-Terminal Flow Control (0)
12 Line Width 42 PAD-Terminal XON Character (17)
13 Page Length (0) 43 PAD-Terminal XOFF Character (19)
14 Line Folding (1) 44* Generat Break (INV)
15 Page Wait (0) 45* APP on Break (0)
16 Interrupt on Break (0) 46 Input Unlock Option (0)
17 Break Code (0) 47 Input Unlock Timer (0)
18 NVT Options (0) 48 Input Unlock Character (0)
19 Initial Keyboard State (0) 49 Output Lock Option (2)
20 Half/Full Duplex 50 Output Lock Timer (10)
21 Real Character Code 51 Output Lock Option (0)
22 Printer Style 53* Break Options (0)
23 Terminal Type 54 Terminal-PAD Flow Control (0)
24 Permanent Terminal (0) 55 Terminal-PAD XON Character (17)
25 Manual or Auto Connect (0) 56 Terminal-PAD XOFF Character (19)
26 Rate 57 Connection Mode (2)
27 Delete Character 58 Escape to Command Mode (1)
28 Cancel Character (18) 59* Flush Output on Break (0)
29 Display Character (18) 63 Eight-bit Transparency (1)
30+ Abort Output Character (0) 64+ Early ACK (0)
Note: All Telenet Paramaters must follow the National Option Marker
(Paramter 0, value '21' Hex) in PAD Messages.
Parameters marked with "*" should not be used.
Parameters marked with "+" should be used with caution.
Telenet ITI Parameters Arranged by Functional Category
------------------------------------------------------
Para- Para-
meter Description (Default Value) meter Description (Default Value)
----- --------------------------- ----- ---------------------------
(CONNECTION MODE) (BREAK HANDLING)
57 Connection Mode (2) 16 Interrupt on Break (0)
58 Escape to Command Mode (1) 40 Inset on Break (0)
17 Break Code (0)
(CALL ESTABLISHMENT & CLEARING) 44* Generat Break (INV)
25 Manual or Auto Connect (0) 45* APP on Break (0)
32 Automatic Hang-up (0) 59* Flush Output on Break (0)
53* Break OPtions (0)
(COMMAND PREOTECTION)
7* Command Mask (127) (VIRTUAL TERMINAL DEVICE)
8* Command Mask (3) 39 Padding Options (1)
9 Carriage Return PAD (Fixed)
(DEVICE DEPENDENT) 38 Carriage Return PAD (Variable)
24 Permanent Terminal (0) 10 Linefeed Padding
23 Terminal Type 11 Tab Padding
20 Half/Full Duplex 12 Line Width
21 Real Character Code 13 Page Length (0)
22 Printer Style 14 Line Folding (1)
26 Rate 15 Page Wait (9)
63 Eight-bit Transparency (1) 1 Linefeed Insertions (0)
(TERMINAL DISPLAY) (VIRTUAL TERMINAL PROCESS)
3 Echo (1) 18 NVT Options (0)
4 Echo Mask (163) 27 Delete Character (127)
2 Network Message Display (0) 28 Cancel Character (24)
37 Network Usage Display (0) 29 Display Character (18)
31 Interrupt Character (0)
(PACKET ASSEMBLY/DISASSEMBLY) 30 Abort Output Character (0)
6* Buffer Size (0) 33 Flush Output (0)
5 Transmit Mask (2)
34 Transmit on Timers (1) (2741 Terminal Support)
35 Idle Timer (80) 19 Initial Keyboard State (0)
36 Interval Timer (0) 46 Input Unlock Option (0)
64 Early ACK (0) 47 Input Unlock Timer (0)
48 Input Unlock Character (0)
(FLOW CONTROL) 49 Output Lock Option (2)
41 PAD-Terminal Flow Control (0) 50 Output Lock Timer (10)
42 PAD-Terminal XON Character (17) 51 Output Lock Option (0)
43 PAD-Terminal XOFF Character (19)
54 Terminal-PAD Flow Control (0)
55 Terminal-PAD XON Character (17)
56 Terminal-PAD XOFF Character (19)
Parameters marked with "*" should not be used.
Para-
meter Description
----- -----------
1 Linefeed Insertion
This parameter instructs the PAD to routinely insert a linefeed
(LF) character into the data stream following each appearance of a
carriage return (CR) character. Values may be OR-ed together:
0 No LF Insertion (TP4 Default)
1 Insert LF after CR on output to the terminal
2 Insert LF after CR on input from the terminal
4 Insert LF after CR on echo to the terminal
2 Network Message Display
This parameter controls the transmission of network-oriented
messages to the terminal. Values are:
0 Transmit network-oriented messages (Default)
1 Suppress network-oriented messages
3 Echo
This specifies whether or not the network returns images of
characters entered from the terminal during Data Transfer mode.
Values are:
0 Network does not echo
1 Network echoes according to the Rcho Mask (Default)
3 Echo Mask
The Echo Mask specifies which characters are to be echoed during
Data Transfer mode. Values may be OR-ed together:
1 Alphanumerics
2 Carriage Return
4 Escape
8 Editing Characters
16 Terminators
32 Form Effectors
64 Control Characters
128 Other Characters
Default is 163 = 1+2+32+128 (Alphanumerics, Carriage Return, Form
Effectors, and Other Characters).
3 Transmit Mask
The Transmit Mask specifies those characters which indicate a
logical break in the data being entered from a terminal and which
force transmission of that data to its destination. Values may be
OR-ed together:
0 Transmission on Transmit Mask disabled
1 Alphanumerics
2 Carriage Return (Default)
4 Escape
8 Editing Characters
16 Terminators
32 Form Effectors
64 Control Characters
128 Other Characters
4 Buffer Size
This parameter is archaic and should no longer have any affect on a
TP. It is used to specify the maximum number of characters that
will be accumulated by the network before they are forwarded to the
Host.
0 Buffer 256 characters (Default)
1-255 Buffer 1-255 characters
7 Command Mask
This is an archaic parameter. Its use has been phased out, but the
parameter number has not be redefined for another function.
8 Command Mask
This is an archaic parameter which has not been redefined to
support another function.
9 Carriage Return Padding
The Carriage Return Radding parameters specify the number of PAD
chracter times to be inserted adter each carriage return character
sent to the terminal. Parameter 9 specifies the Fixed Component.
Values may run from 0 through 31 character-times of padding
provided.
10 Linefeed Padding
This specifies the number of pad character delays inserted after
each linefeed (LF) character sent to the terminal. Values may
range from 0 through 15 character-times of padding provided.
11 Tab Padding
This specifies the number of pad character delays inserted after
each horizontal tabulation (HT) character sent to the terminal.
Values may range from 0 through 15 character-times of padding
provided.
12 Line Width
This identifies the number of character positions per terminal
print line. Values range from 1 through 255 characters per line;
or 0, which specifies 256 character per line.
13 Page Length
This parameter identifies the number of lins per terminal page or
displa screen. Values range from 1 throuhj 255 lines per page; or
0, which specifies an infinite page length.
14 Line Folding
This parameter specifies whether or no the PAD begins a new line
when the number of characters in a print line exceeds the line
width:
0 Disable line folding
1 Enable line folding (Default)
15 Page Wait
This parameter specifies whether or not the PAD automatically
enters a flow controlled state (X-OFFed) at the end of each page.
Page length is defined by Telenet parameter 13, above.
0 Page Wait disabled (Default)
1 Page Wait enabled
16 Interrupt on Break
This parameter specifies whether or not the PAD will transmit an
INTERRUPT packet to the Host when a break signal is received from
the terminal. Values are:
0 No INTERUPT packet sent on break (Default)
1 Send INTERRUPT packet on break
17 Break Code
The Break Code specifies an eight-bit representation for the break
signal condition. Cales may be any number from 1 through 255.
Default is 0 (No break code).
18 Network Virtual Terminal (NVT) Option
This parameter enables or disables NVT facilities by functional
group:
0 NVT disabled (Default)
2 Enables Process Control function *
4 Enables Editing Function
* use with caution
19 Initial Keyboard State
This defines the initial state of the terminal keyboard at the
beginning of a virtual call. Lock the keybaord if the Host sends a
header at the beginning of a virtual call. Leave the keybaord
unlocked if the Host expects an initial character from the
terminal:
0 Keyboard initially locked (Default)
1 Keyboard initially unlocked
20 Half/Full Duplex
This parameter specifies the echoing requirement of the terminal.
Values are:
0 Full duplex terminal
1 Half duplex terminal
21 Real Character Code
This parameter specifies the communications code for representing
data generated or recognized by the terminal. Values are:
0 ASCII
1 Correspondence (standard Selectric)
2 EBCD
3 APL ASCII (typewriter-paired)
4 APL ASCII (bit-paired)
5 APL Correspondence
6 APL EBCD
22 Printer Style
This identifies the class of printing mechanism used by the
terminal:
0 Typewriter style terminal
1 Line printer style terminal
23 Terminal Type
This identifies the specific make and model of the terminal.
Values are:
0 Unknown or Synchronous Host
1-126 Terminal codes
127 Asynchronous Hosts
24 Permanent Terminal
This determines whether the netwirk queriers for a terminal
identifier or employs a pre-set identifier. Values are:
0 Request identifier (Default)
1 Use pre-set identifier
25 Manual/Automatic Connection
This parameter specifies whether a pre-defined virtual circuit is
to be established automatically for the terminal, or it the call
must be initiated by a C(onnect) or ID command entered from the
terminal. Values are:
0 Manual (Connect or ID required) (Default)
1 Automatic (Address pre-defined)
26 Rate
This paramter specifies the transmission speed of the terminal,
as determined by the network:
0 110 bps
1 134.5
2 300
3 1200
4 600
5 75
6 150
7 1800
8 200
9 100
10 50
11 ??
12 2400
27 Delete Character
This specifies the character to be used for single-character
editing.
0 Function disabled
1-127 Identifies the character to be used
Default is decimal 127.
28 Cancel Character
Specifies the character to be used to delete input data buffered
for the terminal at the PAD.
0 Function disabled
1-127 Identifies the character to be used
Default is decimal 24.
29 Display Character
Specifies the character to be used for displaying data which has
been accumulated by the PAD.
0 Function disabled
1-127 Identifies the character to be used
Default is decimal 18.
30 Abort Character
Specifies the character which when recevied from the terminal,
causes the Host to run the user's process to completion without
sending any further output to the terminal. Note: Use with
caution.
0 Function disabled (Default)
1-127 Identifies the character to be used
31 Interrupt Character
Specifies the character to be used to signal the Host to suspend,
interrupt, abort, or terminate the operation of the user's current
process. Note: Use with caution. Values are:
0 Function disabled (Default)
1-127 Identifies the character to be used
32 Automatic Hang Up
This specifies whether the terminal is to be physically
disconnected from the network or left in Command Mode at the end of
a virtual call. Note: Use with caution. Values are:
0 Leave in Command Mode upon disconnect (Default)
1 Hang up upon disconnect
33 Flush Output
This parameter controls the transmission of all data from the Host
to the terminal:
0 Transmit all information sent from (Default)
the Host to the terminal
1 Discard all information sent from
the Host to the terminal
34 Transmit on Timers
This specifies that characters accumulated by the network are
forwarded upon epiration of either the Idle or Interval Timer.
Values are:
0 Disable transmission on timers
1 Enable transmission on timers (Default)
35 Idle Timer
The Idle timer defines the time interval between chracters arriving
from the terminal which, when exceeded, causes the network to
transmit any accumulated characters to the Host. Values are:
0 Timer disabled
2-255 multiples of 50 ms (.05 seconds)
Note: Default is 80 (4 seconds)
36 Interval Timer
The Interval Timer specifies the maximum time period during which
the network PAD will acuumulate characters before forwarding them
to their destination. Values are:
0 Timer disabled (Default)
2-255 multiples of 50 ms (.05 seconds)
37 Network Usage Display
This controls the transmission of information on chargeable network
usage provided at the end of a virtual call. Values are:
0 Exclude network-generated usage information
from the DISCONNECTED message (Default)
1 Include network-generated usage information
from the DISCONNECTED message
38 Carriage Return Padding
The Carriage Return Padding paramter specifies the number of pad
character times to be inserted after each carriage return character
sent to the terminal. Parameter 38 specifies the Viable Component.
Values may run from 0 through 7.
39 Padding Options
This paramter specifies whether or not the network provides time
delay padding after form effectors sent to the terminal. Values
are:
0 Network provides no time delay padding
1 Network provides time delay padding (Default)
after CR, LF, and HT characters
40 Insert on Break
This specifies whether or not the PAD inserts the Break Code in the
data stream at the point at which the break signal is received from
the terminal. Values are:
0 Do not insert on break (Default)
1 Insert Break Code on break
41 DCE-to-DTE Flow Control
This parameter specifies network XON/XOFF control of transmission
from the terminal. Values are:
0 No DCE-to-DTE flow control (Default)
1 Network provides flow control
42 DCE-to-DTE XON Character
This identifies the character which, when sent from the network to
the terminal, causes the terminal to resume transmission of
buffered data. Value may be any character from 1 to 127. Default
is 17 (19 octal, 11 hex).
43 DCE-to-DTE XOFF Character
This identifies the character which, when sent from the network to
the terminal, causes the terminal to temporarily suspend
transmission of buffered data. Value may be any character from 1
to 127. Default is 19 (21 octal, 13 hex).
44 Generate Break
This parameter is used to cause a break signal to be transmitted
from the PAD to the terminal. It is no longer valid to set this
parameter.
45 APP on Break
This paramter specifies whether or not the PAD transmits a SET &
READ PARAMETERS PAD Message to the Host system when a break signal
is received from the terminal. The SET & READ PARAMETERS PAD
Message is a translation of an APP TIU command defined by the
Telenet Host Interface specification, which was used by packet-mode
DTE prior to the adoption of CCITT recommendations for packet-mode
DTE. Thus, GTE Telenet strongly advises against the use of the
parameter by X.25 DTE. Values are:
0 No SET & READ PARAMETERS PAD Message (Default)
generated on break
1 SET & READ PARAMETERS PAD Message generated
on break
46 Input Unlock Option
This parameter specifies what action the PAD takes after the
termuinal user has entered a line of data, the keyboard has been
locked, and the PAD has no data to deliver to the terminal. Values
are:
0 Unlock based on timer expiration (Default)
1 Unlock based on input data content
47 Input Unlock Timer
This specifies the time interval that the PAD will wait before
unlocking the terminal keybopard, if the PAD has no data pending
delivery to the terminal and paramter 46 is set to 0. Values range
from 0 through 255 multiples of 50 ms (.05 seconds). Default is 0
seconds.
48 Input Unlock Character
This specifies the character which, when appearing at the beginning
of a data line, will cause the PAD to leave the keyboard locked at
the end of the data line (if there is no data pending delivery to
the terminal). Value may be any character code from 0 through 127;
or 240, which leaves the keyboard locked adter all characters.
Default is 0.
49 Output Lock Option
This specifies the action the PAD will take when it recives data
for delivery to the terminal, when the keyboard is unlicked for
input from the terminal. Values are:
0 Discard output data
1 Transmit output after input completion
2 Transmit output id input idle (Default)
50 Output Lock Timer
This defines the intercal between characters arriving from the
terminal which, when exceeded, causes the PAD to lock the keyboard
when it has output pending delivery to the terminal. Values may
range from 0 through 255 multiples of 50 ms (.05 seconds). Default
is 10 (500ms).
51 Output Lock Option
This parameter specifies what action the PAD takes after it has
transmitted all pending data to the terminal. Values are:
0 Unlock based on timer (Default)
1 Unlock based on output completion
2 Unlock based on output data content
53 Break Options
This allows for a combination of options for handling break signals
from the terminal. Values may be OR-ed together:
0 No options selected (Default)
1 Interrupt on break
4 APP on break
32 Insert on break
54 DTE-to-DCE Flow Control
This parameter specifies XON/XOFF control of transmission from the
network. Values are:
0 No DTE-to-DCE flow control (Default)
1 Network respects flow control
55 DTE-to-DCE XON Character
This identifies the character which, when sent to the network,
causes the network to resume the transmission of buffered data.
Value may be any character code from 1 through 127. Default is 17
decimal.
56 DTE-to-DCE XOFF Character
This identifies the character which, when sent to the network,
causes the network to temporairly suspend the transmission of
buffered data. Value may be any character code from 1 through 127.
Default is 19.
57 Connection Mode
This parameter specifies which level of terminal code conversion
the PAD is to perform during Data transfer mode. Values are:
0 Transparent
1 Real
2 Virtual (Default)
58 Connection Escape
This parameter specifies whether or not the terminal may escape
from Data Transfer mode to Network Command mode. Values are:
0 Escape not possible
1 Escape possible (Default)
59 Flush Output on Break
This paramter specifies whether or not the PAD transmits a SET &
READ PARAMETER PAD Message to the Host and begins discarding output
to the terminal when a break signal is received from the terminal.
Again, GTE Telenet recommends that this parameter not be used by
X.25 DTE.
0 No SET & READ PARAMETERS PAD Message (Default)
sent and no output flushed
1 SET & READ PARAMETERS PAD Message sent and output
to the terminal
63 Eight-bit Transparency
This paramter identifies whether the terminal uses the eight (most
significant) bit for data or as a parity bit. Values are:
0 No parity, eight-bit transparency
1 Parity required (Default)
64 Early ACK
This parameter specifies whether or not the PAD for termninal
support should acknowledge data packets received for the terminal
prior to transmitting the packets (in the form of a character
stream) to the terminal. Values are:
0 Acknowledge data packets after transmission
to the terminal (Default)
1-7 Acknowledge data packets 1-7 packets prior to
transmission to the terminal
Note: *Extreme Caution* should be excercised when modifying this
parameter. The increased "artificial window" size does not
guarantee packet delivery to the terminal. Large amounts of
data could be lost from any form of network disconnect.
Values of 5 or greater should never be used.
