D-Link DI-1750 Reference Manual page 80

Command
x25 t20 seconds
x25 t23 seconds
Key Word:
Q(quit)
......
(29)snmp
(30)x25
Please Input the code of command to be excute(0-30): 30
Key Word:
U(undo) D(default)
......
(22)t20
(23)t23
......
Please Input the code of command to be excute(0-26): 22 （you can also choose 23 to set t23）
Key Word:
Q(quit)
(00)<1-1000>
Please Input the code of command to be excute(0-0): 00
Please input a digital number:Please input a string:100 （input DTE restart timer）
Will you excute it? (Y/N):y
For an example of setting the retransmission timers, see the section "DDN X.25 Configuration
Example" later in this chapter.
2. Set the X.25 address
When establishing SVCs, X.25 uses addresses in the form defined by the ITU-T Recommendation
X.121 (or simply an "X.121 address"). An X.121 address has from zero to 15 digits. Because of the
importance of addressing to call setup, several interface addressing features are available for X.25.
To configure the X.25 address, perform the following tasks:
♦ understand the normal X.25 address
♦ configure an interface Alias address
Understand normal X.25 address
An X.25 interface's X.121 address is used when it is the source or destination of an X.25 call. The X.25
call setup procedure identifies both the calling (source) and the called (destination) X.121 addresses.
When an interface is the source of a call, it encodes the interface X.121 address as the source address.
An interface determines that it is the destination of a received call if the destination address matches
the interface's address.
D-LINK's X.25 software can also route X.25 calls, which involves placing and accepting calls, but the
router is neither the source nor the destination for these calls. Routing X.25 does not modify the source
or destination addresses, thus preserving the addresses specified by the source host. Routed
(switched) X.25 simply connects the logical X.25 channels to complete the X.25 virtual circuits which
are switched between zero or more routed X.25 links
Set the interface Alias address
You can supply alias X.121 addresses for an interface. This allows the interface to act as the
destination host for calls having a destination address that is neither the interface's address nor the null
address.
Local processing (for example, IP encapsulation) can be performed only for incoming calls whose
destination X.121 address matches the serial interface or alias of the interface.
To configure an alias, perform the following task in global configuration mode:
Model Name
Set DTE T20 reset request, default value=180sec
Set DTE T23 clear request, default value=180sec
Modify SNMP interface parameters
Set parameters for X.25
Q(quit)
Set X.25 DTE Restart Request retransmission timer
Set X.25 DTE Clear Request retransmission timer
X.25 DTE restart timer(second)
Purpose
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