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The X.25 User Facility Set Parameters screen (#161) in Figure 7-7 “X.25 user Facility Set Parameters
Screen” is displayed when you
press the [Add] or [Modify] function
key at the X.25 User Facility Sets screen (Figure 7-6 “X.25 User Facility Sets”). It is also displayed when you type the
path name: @NETXPORT.NI.NIname.PROTOCOL.X25.FACSET.fsetname in the Command window of any screen and press the [Enter]
key, where NIname is a configured X.25 NI and
fsetname is a configured X.25 facility set. Figure 7-7 X.25 user Facility Set Parameters
Screen
![[X.25 user Facility Set Parameters Screen]](img/gfx53.gif)
Press the [Save Data] function key to transfer
the data displayed on the screen to the configuration file. Verify
that the data record has been created by checking that the Data
flag is set to Y. Fields- Packet size negotiation
(Required.) Enter Y
if you want to implement packet size negotiation. Enter N
if you do not wish to implement packet size negotiation. Default: N Range: Y or N - Packet size negotiation values
These are the packet sizes that will be negotiated
for incoming and outgoing packets if packet size negotiation is
set to Y. Default: 128 Range: 16, 32, 64, 128, 256, 512, 1024, 2048, 4096 - Window size negotiation
(Required.) Enter Y
if you want to implement window size negotiation. Enter N
if you do not wish to implement window size negotiation. Default: N Range: Y or N - Window size negotiation values
These are the window sizes that will be negotiated
for incoming and outgoing packets if window size negotiation is
set to Y. Default: 2 Range: 1-7 - Throughput class negotiation
(Required.) Enter Y
if you want to implement throughput class negotiation. Enter N
if you do not wish to implement throughput class negotiation. Default: N - Throughput class negotiation values
Throughput class negotiation values depend upon
the speed of the link. Table 7-1 “Throughput
Class and Line Speed”
shows the throughput classes and associated link speeds. Range: 7-12, depending upon the speed of the link. Default: 11
Table 7-1 Throughput
Class and Line Speed | Throughput Class | Line Speed |
|---|
| 7 | 1200 | | 8 | 2400 | | 9 | 4800 | | 10 | 9600 | | 11 | 19200 | | 12 | 48000 |
| | | |  | CAUTION: Answer Y (Yes) to
negotiation only if you subscribed for negotiation. Some networks
will reject a call with negotiation if you did NOT subscribe for
negotiation. Also, if you did subscribe for negotiation, it is preferable
to answer Y because certain networks
will clear a call if you subscribe for negotiation but answer N
(No) for negotiation. | | | | |
- Use of D-bit
(Required.) Enter Y
if you want to enable delivery confirmation with this set of circuits.
Enter N if you either do not subscribe
to this facility, or do not want delivery confirmation enabled for
this set of circuits. - Accept reverse charge (collect) call
(Required.) Enter Y
if you wish to configure the link to receive reverse charge calls
on this set of circuits. Enter N
if you either do not subscribe to this facility, or do not want
to accept reverse charging on this set of circuits. Default: N Range: Y or N - Make reverse charge (collect) call
(Required.) Enter Y
if all calls sent by this set of switched virtual circuits (SVC)
request reverse charging. Enter N
if you either do not subscribe to this facility, or do not want
reverse charging capabilities enabled for this set of circuits. Default: N Range: Y or N - Closed user group (CUG)
(Required.) The closed user
group (CUG) facility enables a group of DTE devices to communicate
only with other members of the same CUG and prevents access from
any device or user that is not in this CUG. Answer Y
if you subscribed to a CUG using the basic format and if you want
to use this CUG with this SVC set. Answer N
if you did not subscribe to a CUG using the basic format or if you
do not want this SVC set to belong to a CUG. Default: N Range: Y or N - Fast select
Answer Y if you
wish to make or receive a fast select call with this set of circuits.
Enter N if you either do not subscribe
to this facility, or do not want fast select capability enabled
for this set of circuits. Default: N - Fast select restricted
Enter Y if you
want the remote node(s) to reject any call made with the fast select
facility. You can answer Y in this
field only if you answered Y in
the fast select field. Enter N
to enable the remote node(s) to accept or reject fast-select calls. Default: N Range: Y or N - CUG number
If the closed user group facility is enabled for
this set of circuits, specify the number of the CUG to be used. Default: 0 Range: 0-99
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