Installation guide

4-92 Cisco 4000 Series Installation Guide
Network Connection Considerations
For a description of the common ATM terms and acronyms, see the publication
Internetworking Terms and Acronyms.
All ATM interfaces are full-duplex. You must use the appropriate ATM interface cable and
accessories to connect the ATM network processor module with an external ATM network.
The ATM interface cable is used to connect your router to an ATM switch, or to connect
two router ATM interfaces back to back.
An ATM network processor module can be installed in any available network
processor module slot. If the middle slot is not occupied by an FDDI network processor
module, use this slot for the ATM module.
Note Traffic from multiple ATM interfaces could exceed the available bandwidth in the
router, causing packets to be dropped. Therefore the Cisco 4500-M and Cisco 4700-M
routers currently support only one ATM module.
Figure 4-50 ATM Network Processor Module with STS-3c/STM-1 Multimode PLIM
H3156
Alignment
groove
Alignment
groove
ATM
MM
XMTR RCVR
READY
RX CELLS
BUSY
RX ALARM
FDDI
connector