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X3_ITI.TXT
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1987-11-04
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X.3 ITI Parameters
------------------
Para-
meter Description
----- -----------
1 Escape to Command Level
This paramter allows the terminal to initiate an escape from Data
Transfer Mode, in order to send a command to the PAD. Values are:
0 Escape not possible
1 Escape possible (default)
2 Echo
This paramter provides for all characters received from the
terminal to be transmitted back to the terminal, as well as being
interpreted and forwarded by the PAD to the the remote DTE.
Values are:
0 No echo
1 Echo (default)
3 Data Forwarding
This paramter allows the PAD to recognize defined character(s)
received from the terminal as an indication to complete assembly
of characters to forward a DATA packet to the remote DTE. Values
may be OR-ed together (e.g., value of 3=1+2=Alphanumerics plus
Carriage Return)
0 No signal
1 Alphanumerics
2 Carriage Return (Default)
4 Escape
8 Editing Characters
16 Terminators
32 Form Effectors
64 Control Characters
128 Other Characters (Not valid according to CCITT
recommendations)
4 Idle Timer
Should the interval between successive characters received from
the terminal exceed the selected Idle Timer delay, the PAD will
terminate assembly of characters and forward a DATA packet to the
remote DTE. Values are:
0 Timer disabled
n multiples of 50 ms (.05 seconds), where 1<=n<=255. n=1
n=1 and n=2 not recommended. (Default is 80, 4 seconds)
5 Ancillary Device Control
This paramter enables flow control between the PAD and the
terminal. The PAD uses the XON and XOFF characters (decimal 17
and 19) to indicate to the terminal whether ir not it is ready to
accept characters. Values are:
0 No use if XON/XOFF (default)
1 Use XON/XOFF
6 Suppression of Service Signals
This paramter provides for the supression of all messages sent by
the PAD to the terminal. Values are:
0 Signals not transmitted (messages not sent)
1 Signals transmitted (messages sent) (Default)
7 Break Options
This paramter specifies the action taken on receipt of a Break
signal from the terminal. The only valid values are:
0 Do nothing (Default)
1 Send INTERRUPT Packet to Host
2 Send RESET Packet to Host
8 Escape to PAD Command State
21 Flush-on-Break (Discard Output, Send Indication of Break
and Send INTERRUPT)
8 Discard Output
This controls transmission of data to the terminal. Values are:
0 Normal data delivery to the terminal (Default)
1 Discard all output to the terminal
9 Carriage Return Padding
This paramter provides for automatic insertion by the PAD of null
character padding after the transmission of a carriage return to
the terminal. Values are:
0 No padding
1-31 Number of character delays
10 Line Folding
This provides for automatic insertion by the PAD of appropriate
format effectors to prevent overprinting at the end of a terminal
print line. Values are:
0 No line folding
n Character per line before folding, where 1<=n<=255
11 Binary Speed
This paramter is set by the PAD when the terminal establishes a
physical connection to the network. This allows the remote DTE
or terminal user to examine the speed, as determined by the PAD.
Values are:
0 110 bps
1 134.5
2 300
3 1200
4 600
5 75
6 150
7 1800
8 200
9 100
10 50
12 Flow Control of the PAD by the terminal
This allows for flow control between the terminal and the PAD.
The terminal indicates whether or not it is ready to accept
characters from the PAD, via XON and XOFF characters. Values
are:
0 No use of XON/XOFF
1 Use XON/XOFF
13 Linefeed Insertion
This paramter instructs the PAD to routinely insert a linefeed
(LF) character into the data stram 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
14 Linefee Padding
This paramter provices for automatic insertion by the PAD of null
character padding after the transmission of a linefeed to the
terminal. Values are:
0 No padding
1-15 null characters
15 Editing
This paramter enables local editing of text within the PAD before
transmission through the network. Note, if editing is enabled,
transmission on timers is disabled. Values are:
0 Editing disabled (Default)
1 Editing enabled
16 Character Delete
Parameter 16 specifies the editing character which causes the PAD
to erase the previous character entered by the terminal. Parameter
16 is only valid if editing is enabled. Default is 127.
17 Line Delete
Parameter 17 specifies the editing character which causes the PAD
to erase the entire buffer. If data is forwarded on carriage
return only, the buffer contains one line at a time. Parameter 17
is only valid if editing is enabled. Default is 24.
18 Line Display
Parameter 18 specifies the editing character which causes the PAD
to echo the entire buffer to the terminal. Paramter 18 is only
valid if editing is enabled. Default is 18.