12
FALLBACK SWITCH AND LOOPBACK SWITCH
DB25 terminal/PC connector to a single Switch. See
Figure 3-2
. If a PC is being
used with a 9-pin connector, a special adapter must be constructed. Call Technical
Support at 724-746-5500 for more information on cables and adapters.
Figure 3-2. Direct cabling from a DB25 terminal/PC to a single Switch.
If a terminal/PC is cabled directly to a group of Switch units, you must use a
DB25 ribbon cable. The terminal/PC attaches to one connector on the ribbon
cable, and the Switch units connect to the rest of the connectors via adapters. See
Figure 3-3
. For more information, call for technical support.
Figure 3-3. Connections between the adapters and Switch units.
Management
Console
Modular
Adapter
4-Wire Straight-
Through Modular
Cable
Fallback or
Loopback
Switch
Switch #00
Switch #01
Switch #02
Management
Console
DB25 Ribbon
Cable
Modular Adapters with 4-
Wire Straight-Through
Modular Cables
