Cisco Systems 3200 User Manual

The Cisco 3270 router can be ordered with one Gigabit Ethernet copper interface and one fiber optic 
interface, or with two Gigabit Ethernet copper interfaces. The port configurations are not 
interchangeable.

The PCI bus connector supports communication between the Serial Mobile Interface Card (SMIC), the 
Fast Ethernet Switch Mobile Interface Card (FESMIC), and the Cisco 3270 Rugged Router card. The 
Wireless Mobile Interface Card (WMIC) communicates with the router through an internal Fast Ethernet 
port. The WMIC is configured through an independent console port; the card draws power only from the 
bus.

For detailed information about the Cisco 3270 Rugged Router card, such as header pin assignments, see 
the “Cisco 3200 Series Mobile Access Router Technical Reference” (OL-1927). This book is a 
controlled document. Qualified system integrators can contact Cisco Marketing to receive a copy.

The industry-standard architecture (ISA) buses and peripheral component interconnect (PCI) buses on 
the Cisco 3200 Series Mobile Access Router cards provide power to the components on the cards. Both 
buses comply with the PC/104-Plus standard. The ISA bus allows PC/104-Plus ISA signals to pass 
through the card bus, but the Cisco cards do not use any of the signals. 

The PCI bus signals allow the Cisco SMIC and FESMIC to communicate with the Cisco 3270 Rugged 
Router card. The WMIC draws power from the bus, but it does not communicate with the router through 
the buses. It communicates with the router through an internal Fast Ethernet port. Non-Cisco cards 
cannot communicate with the router over the PCI bus. 

If you add non-Cisco cards that generate signals on the PCI bus, the router might shut down. Please do 
not add non-Cisco cards that generate signals on the PCI bus.