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LTPH-SM-1052-04
Additional X.25 Parameter Configuration
In addition to PVC and SVC, the following additional X.25 parameters may be modified. The default settings are
indicated in parentheses.
These parameters display on the X.25 Management screen, Line Parameters (option A) selected. Accessing these
parameters is similar to accessing PVC and SVC (see
If these parameters are not properly configured or do not match the equipment settings on the
other end of the X.25 connection, the performance of the HMU will be adversely affected.
Only knowledgeable personnel should attempt to configure these parameters.
Ethernet Port Configuration Procedure
The Ethernet port (J34 for 10BASE-T and J32 for 10BASE-2 on the rear of the Wideband 3190) may be used in
either Interactive Mode or NMA Mode. Unlike the X.25 port, the operating mode of the Ethernet port is not
configured by the user, but is determined by the TCP port opened by the client application.
The following table shows the TCP port number and the operating mode.
The HMU cannot operate both 10BASE-T and 10BASE-2 simultaneously. The user must use the Craft screens
through the HMU serial port to select the appropriate physical interface. (Refer to the HMU-319 User Manual,
document LTPH-UM-1086-xx, for a detailed Ethernet configuration procedure.)
HMS-358 List 5 and List 6
Setting
Max frame size
Layer 2 Restart Timer
Layer 2 Window Size
Acknowledge Timer
Number of Max Retransmit Attempts
"X.25 Parameter Configuration" on page
TCP Port Number
TCP Port 23
Interactive Mode
TCP Port 42462
NMA Mode
July 14, 2002
Appendix B - HMU Configuration for X.25 and Ethernet Connections
Default
(142)
(180)
(7)
(5)
(10)
Operating Mode
78).
79
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