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Host Connections
4.1.3.2X.25 Line Description
X.25 information is transmitted in packets. These packets consist of a header that contains
the control data and the destination address, and the data field that is transparent to the
network.
The X.25 line description, consists of a screen in which packet parameters are defined to
ensure the smooth flow of information. The limitations imposed on the size of packets and
on the line communication, is affected by the line type.
NOTE: Some of the parameters' definitions depend on your network subscription and the
options you want to make use of. The chosen values should match the ones in the AS/400
System line description.
If the Sync line was defined as X.25, an X.25 Parameter Configuration menu will appear.
Define the parameters, referring to the parameter descriptions below, and press ENTER.
Packet level sequence numbering ( Modulo 8
Link window size
Flow control negotiation
Manual options
Number of retries
Link level - transmit timeout
Diagnostic code format
DTE/DCE
. . . . . . . . . . .
Line speed ( for DCE only ). .
P=Help
F1=KeysHelp
Packet Level Sequence
Numbering
Link Window Size
Flow Control
4
A S / 4 0 0
X . 2 5
. . . . . .
(
. .
( not permitted
. . . . . . .
( not all
. . . . . .
(
(
. . .
( SNA
( DTE
(
PRINT=Hardcopy
The packet sequence numbering scheme used by your
network, this will depend on your X.25 network subscription.
The default value =Modulo 128, refer to Control
Negotiations.
[0] = Modulo 8
[1] = Modulo 128
The maximum number of frames that can be sent by the
Controller without receiving an acknowledgment from the
network. valid retries are (1-7).
Default Values = 7
Allows the user to change the Packet Size and the Packet
C O M M U N I C A T I O N
Line
2
0
, Modulo 128
1 - 7
) . . . . . . . . . . 7
0
, permitted
0
, all
1
000 - 250
) . . . . . . . . . 010
01 - 60
sec ) . . . . . . .
0
, ISO
1
) . . . . . . .
0
, DCE
1
) . . . . . . .
1050
0
,
1200
1
2400
3
,
4800
4
19200
6
, 38400
7
F7=Previous
1
)
1
1
) 1
) . . . . . . 1
03
0
0
, 2000
2
,
, 9600
5
,
) . . . . . . 0
F8=Next
F3=Exit
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