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Installing a LightStream 2020 Switch 2-21
Basic LS2020 Configuration Tasks
Step 2 Issue the set command at the TCS hub prompt, as shown below:
set {sa | sb} modem baudrate {2400 | 9600}
In this command, specify the switch card having the non-matching baud rate. For example,
if you have dialed into the LS2020 chassis through switch card A, specify sb in the set
command; if you have dialed into the chassis through switch card B, specify sa in the set
command. Finally, specify the desired baud rate for the modem port.
Step 3 Issue the init command at the TCS hub prompt, as shown below:
init {sa | sb} modem
Again, as in Step 2 above, specify the switch card having the non-matching baud rate. This
command initializes the modem port on the switch card with the specified baud rate .
Attaching a Terminal and Matching the Baud Rate
Figure 5-2 in the chapter entitled “Installing Additional Components” illustrates the console/
modem assembly for a switch card. This assembly is inserted in the access (rear) side of the LS2020
chassis opposite a corresponding switch card. This assembly provides the means for attaching a
terminal or a modem to your LS2020 switch.
To attach the terminal cable to the console port and to match the terminal and the console port baud
rates, perform the following procedure:
Step 1 Connect the cable for the VT100-compatible terminal to the console (CNSL) port on the
console/modem assembly.
The switch card slots in the front of the LS2020 chassis are labeled A and B, as are the
corresponding slots forthe console/modem assembly bulkhead(s) inthe rear of the LS2020
chassis. If the primary TCS hub is on switch card A, connect the terminal cable to the
console port of the bulkhead in rear slot A; similarly, if the primary TCS hub is on switch
card B, connect the terminal cable to the console port of the bulkhead in rear slot B.
Note If your LS2020 chassis contains two switch cards, connect the terminal cable to the console
port on the console/modem assembly for the switch card with the primary TCS hub. To identify this
card, examine the green TCS SEL LED on each switch card. The card with the TCS SEL LED lit
is the primary TCS hub.
Step 2 Press the Return key on the terminal keyboard.
If the TCS hub<<A or B>> prompt appears, or if some other prompt appears (see the Note
below), after you press the Return, the prompt signifies agreement between the terminal
baud rate and the console port baud rate and that the terminal is properly attached.
Note If the baud rates match, the system may respond with other than the TCS hub<<A or B>>
prompt, depending on the card to which a connection exists. For example, if you had previously
established a connection to an NP card via the TCS connect command, the system would respond
with the bash (#) prompt, rather than the TCS hub<<A or B>> prompt. The appearance of any valid
system prompt on the terminal screen after Return key activation signifies baud rate agreement.