8-2 Smart Switch 1800 4. 0 User Guide , Rev 0 1
Before configuring a logical X.25 port, make sure these are properly configured:
●Protocol(s) (Chapter 5) that will be transmitted over the logical port.
●Physical frame relay port (Chapter 7) on which the logical port will reside.
Configuring a Physical X.25 Port
Once the necessary Node (Chapter 4) and Pr otoc ol (Chapter 5) par a me ters have been
configured, press [A] at the Port Configuration Menu (or [A], [C], [A] from the Main
Menu. When prompted, enter a port number (or press [Enter] to accept the default of
0). Valid port numbers depend on the model of SmartSwitch 1800—see po rt locations
on p age 6- 1.
The display for an existing port will show the configured parameter values, while the
display for a new port will show default database values (listed in Table 8-1 on page
8-6). Th e foll owing fi gure i s a n exampl e of an e xisti ng port.
Figure 8-1 X.25 Port Screen 1
[A],[C],[A]
from Main Menu
If Physical Po rt Interface (item B) is DSU, item L will be CSU/DSU Operating
Mode, and item M will be RTS Control .
After making any changes, be sure to press [F7] to update the
system memory. Otherwise, the changes will not take effect until
the next re-boot of the SmartSwitch 1800.
Pressing [N] at the screen in Figure 8-1 will display a second screen, and pressing [N]
at the second screen will display a third scr een. The parameters on all three screen s are
listed in Table 8-1 (on page 8-6) .
Node Name=nodexyz
X.25 Port Parameters (screen 1 of 6)
* Port: 5 Link State: Linkup
* I/O: UNIV E RSA L Database System Memory
A Port Type X25 X25
B Physical Port Interface V.35 V.35
C Blocke d P ort Fl a g N N
D Line Speed 64k bps 64k bps
E Modulo 0Mo dul o 8 0 Modul o 8
F Maximum LAPB Window Size 7 7
G N2 Retransmit Cou nt 20 20
H T1 Retransmit Period (msec) 2000 2000
I T2 Wait Ack Period (msec) 1000 1000
J T3 Link Alive Period (sec) 10 10
K Logical DCE Y Y
L Generate Clock Y Y
M Rcv Clock (TT) from D TE N N
N X.25 Level 3 - Screen 2
Option: