3com MSR 20-20 참조 매뉴얼

Use the x25 timer tx2 command to set the reset request (indication) timer for 
DTE (or DCE).

Use the undo x25 timer tx2 command to restore the default.

By default, the timer on a DTE is 180 seconds, and that on a DCE is 60 seconds.

According to X.25, a timer should be started when a DTE sends a reset request (or 
a DCE sends a reset indication). If no peer acknowledgement is received after the 
timer timeout, the sending end will take some measures to guarantee the normal 
proceeding of the local procedure.

x25 timer tx0, x25 timer tx1, x25 timer tx3.

# Set the reset timer on the X.25 interface Serial1/0 to 120 seconds.

<Sysname> system-view

[Sysname] interface serial 1/0

[Sysname-Serial1/0] x25 timer tx2 120 

x25 timer tx3 seconds

Interface view

seconds: Time of the clear request (indication) sending timer in seconds, ranging 
from 1 to 1000.

Use the x25 timer tx3 command to set the clear request (indication) sending 
timer for DTE (or DCE).

Use the undo x25 timer tx3 command to restore the default.

By default, the clear timer on a DTE is 180 seconds, and that on a DCE is 60 
seconds.

According to X.25, a timer should be started when a DTE sends a clear request (or 
a DCE sends a clear indication). If no peer acknowledgement is received after the 
timer timeout, the sending end will take some measures to guarantee the normal 
proceeding of the local procedure.

x25 timer tx0, x25 timer tx1, x25 timer tx2.

# Set the clear timer on the X.25 interface Serial 2/0 to 100 seconds.

<Sysname> system-view

[Sysname] interface serial 2/0

[Sysname-Serial2/0] x25 timer tx3 100