Hardware Configuration
Storage/Control I/O Module 1-13
You can position the jumpers in locations
JP1
3 and
JP1
8 (under the “To Terminal” etching) to
configure the CPU as a DCE termination. Moving the jumpers to these locations supports the
following SIO connections:
•
Straight-thru cables connecting the system to a host terminal (DCE to DTE)
– or –
•
Crossover (null modem) cables connecting the system to a modem (DCE to DCE)
Refer to the Cisco VCO/4K Hardware Installation Manual for more information on serial cable
requirements.
NOTE: When modifying jumper positions on Storage/Control I/O Module boards,
all 7 jumpers must be moved to the new location to insure operation.
Serial Ports 1 through 4
Serial ports 1 through 4 can be configured as a modem (DCE) for connection to a terminal, or
terminal (DTE) for connection to a modem. The Storage/Control I/O Module card’s serial ports
are configured for shipment in the DCE configuration. The following table illustrates jumper
positions for DCE and DTE.
Refer to Figure 8 for the jumper locations on the Storage/Control I/O Module card.
Port
DTE Operation
DCE Operation
1
Jumper –TO MODEM JP11
Jumper – JP1 TO TERMINAL
2
Jumper – TO MODEM JP17
Jumper – JP16 TO TERMINAL
3
Jumper – TO MODEM JP14
Jumper – JP13 TO TERMINAL
4
Jumper – TO MODEM JP19
Jumper – JP18 TO TERMINAL