Panasonic 1200N - Manual (Page 61)

Centillion 1200N ATM Switch User Manual 6-1
NTP 297-8103-903
Hardware Interface
This chapter describes the line interfaces that the ATM Switch supports.
UNI and NNI
As illustrated in Figure 6-1 , there are two types of interfaces in an ATM network.
One is the User Network Interface (UNI) that connects an end system (a router, for
example) to an ATM switch. The other is the Network Node Interface (NNI) that
connects two ATM switches. These interfaces are further classified into public
network interface and private network interface, depending on the type of the
network they are connected to.
The ATM Switch provides various line cards to accommodate these interfaces.
Figure 6-1: ATM Network Interface
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