User guide

The EDA Components
34 1/1551-HSC 901 35/3 Uen C 2005-12-02
Figure 24 Fast Ethernet to E1 or T1 Converter in a Small Site Solution
4.5.2 Ethernet Gateway
The EXN401/410 is a small 1U easy-installable Ethernet to ATM STM-1
gateway developed to facilitate re-use of existing legacy ATM core
networks. Ethernet traffic from a Fast or Gigabit port is encapsulated
according to RFC2684 bridged mode onto ATM AAL5 PVCs according to
traditional ATM DSLAM installations, see Figure 26 on page 35.
EXN401/410 provides a unique possibility to implement Ethernet-based
broadband access networks while re-using the existing ATM core
infrastructure such as ATM core interfaces and routers.
The EXN401/410 series supports the migration of broadband access
networks from traditional ATM over SDH/Sonet to cost-efficient Ethernet,
while preserving the quality of service and service availability.
Figure 25 The Ethernet Gateway EXN401/410