As you can see once you enter a hostname you then enter the PAD program. The PAD is the standard application program used to talk to JANET hosts. It uses the CCITT X.3 and X.29 Recommendations. The PAD program used in this gateway comes with a PAD executive (command) mode which allows you to adjust certain parameters if you so wish.
To use the PAD executive type CONTORL and P (^P) together and
then carriage return
blah% ^P
Note that the PAD executive has it own prompt (PAD>). To leave
the PAD executive, type ^P. The PAD executive allows you to change pad
parameters. In general you will not have to change these as most end
hosts will do this for you. However, if for example, you want to change
the line delete character from ^U to ^X then all you would need to do is
enter following executive command:
PAD> set buferdelete 24
The following executive commands are available:
Command Meaning
? Display paramater set list and the
current value for each one.
^P Return to data transfer state.
help List available commands.
set
read
reset Reset the connection.
clear Clear the connection.
break Send a break.
interrupt Transmit an interrupt packet.
2. POSSIBLE PROBLEMS
i. If the host is unavailable for some reason you may well receive
one of several clearing codes. TABLE 2 gives a brief look at some of the
most common codes you are likely to see. When your connection is cleared
you should receive a four digit hexadecimal code. Use this code to
determine the problem.
ii. The PAD software does not pass the details of your terminal type
to the end host so you may have to set this. On a unix host, this would
be something like:
janet-host% set term=vt100
janet-host% tset
On a VAX/VMS host it something like:
VMS-HOST $ SET TERMINAL/DEVICE=VT100
iii. Most end hosts will take care of any X.3 PAD parameter changes
that are needed. However, on a rare occassion you may want to set
"character mode" yourself rather than "line mode". To do this enter the
following sequence of commands:
PAD> set echo 0
PAD> set timeout 1
PAD> set crpad 0
PAD> set linefold 0
PAD> set linefeedinsert 0
PAD> set lfpad 0
PAD> set editcontrol 0
NOTE: The list of possible problems may well grow in later versions of
the guide.
TABLE 1 PAD EXECUTIVE X.3 PARAMETERS AND VALUES
Number Name Values
1 escape 0,1
2 echo 0,1
3 forward 0-128
4 timeout 0-255
5 padflowcontrol 0,1
6 service --
7 breakaction 0,1,5,8,21
8 datadelivery 0,1
9 crpad 0,1
10 linefold 0-255
11 baudrate 3
12 terminalflowcontrol 0,1
13 linefeedinsert 0,1,4,5,6,7
14 lfpad 0,1
15 editcontrol 0,1
16 chardelete 0-127
17 bufferdelete 0-127
18 display 0-127
NOTE - paramter 6 is not supported.
TABLE 2 COMMON CLEAR CODES
The first two digits represent the cause and the second show the
diagnostic. This is a very brief subset of the full X.25 list.
CAUSE CODE MEANING
00 Cleared by end host (remote DTE)
01 Number busy
05 Network congestion
09 Out of Order
0B Access barred
0D Un-obtainable
11 Remote procedure error
13 Local procedure error
80 Cleared by end host (remote DTE)
DIAGNOSTIC CODE MEANING
00 No additional information
40 Call setup problem
41 Facility code not allowed
42 Facility parameter not allowed
43 Invalid called address
44 Invalid calling address
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