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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. 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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