Cabletron Systems CSX200 CyberSWITCH, User Manual

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WAN Configuration Using Local Management
CSX200 Family User’s Guide 147
5. Use the arrow keys to highlight T1 Tx Clock Source. Use the SPACEBAR to select Local (no
clock source provided by telephone company) or Loop (clock source provided by telephone
company), then press ENTER.
6. Use the arrow keys to highlight T1 Line Buildout (LBO). Press the SPACEBAR to select 0 dB
unless the service provider recommends another setting, then press ENTER.
7. Use the arrow keys to highlight T1 Network Loopback. Press the SPACEBAR to select None,
then press ENTER.
8. Use the arrow keys to highlight the SAVE command, then press ENTER. The message “Save
Done!” displays and Local Management saves the changes to memory.
9. Access the WAN Interface Configuration screen by using the arrow keys to highlight the WAN
Int Config option, then press ENTER.
Fractional T1 Interface Configuration
This screen is accessed through the WAN Physical Configuration screen. Proceed with the
following steps to configure the WAN Interface through Local Management.
1. Set the WAN connection Interface Number by typing the same number into the Interface
Number field that was input into the Time Slots in the WAN Physical Configuration screen,
then press ENTER (see NOTE on previous page).
2. Unless the user sets the Max Xmit Unit, the CSX200 automatically sets the Max Xmit Unit to
8191 (default) after the active protocol (PPP) is selected.
3. If the T1 Line Coding is B8ZS on the previous screen:
a. Use the arrow keys to highlight Line Coding. Press the SPACEBAR to select NONE, then
press ENTER.
b. Use the arrow keys to highlight Active Protocol. Press the SPACEBAR to select PPP, then
press ENTER.
c. Use the arrow keys to highlight PPP Type. Press the SPACEBAR to select BNCP, then
press ENTER.
!
CAUTION
If you are using a Local clock source, set only one end of the circuit for Local, the other
end must be set for Loop.