
2-1
Chapter 2
ATM DXI Features and Implementation Notes
ATM DXI (Data Exchange Interface) allows a link module with a synchronous
interface (that is, HSSI, V.35, or RS-449) to connect to an ATM network through
an ATM DSU/CSU (Figure 2-1).
When the router transfers data to the DSU/CSU, the DSU/CSU converts variable-
length packets into uniform 53-byte cells for transmission over the ATM network.
Figure 2-1. ATM DXI
Before you customize ATM DXI for your router
• Read about the kinds of support that a router running ATM DXI provides
• Review the notes describing how Bay Networks implements special ATM
DXI features.
DSU/CSU
ATM
Network
DSU/CSU
RouterRouter
T1 or T3
T1 or T3
HSSI or V.35/RS-449
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