Hardware Configuration and Overview of Functions Hardware Specifications
4-8
Centillion 1200N ATM Switch User Manual
NTP 297-8103-903
Interworking Cards The FR card and the CE card installed in the ATM Switch are equipped with a
function for interworking between ATM network and other types of networks.
The CE cards provide structured service and unstructured service in circuit
emulation. There are four types of CE cards:
■CE-DS1
■CE-J2
■CE-DS3
■CE-E1
With CE-DS1, 8-bit channels are stored in DS1 frames and the DS1 frames c an be
switched over to ATM cells depending on the type of service provided.
The frame format of CE-DS1 in shown in Figure 4-3.