Interworking Cards - Nortel 1200N User Manual

Hardware Configuration and Overview of Functions
Interworking
Cards
4-8
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 can 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: CE-DS1 Frame Format
Hardware Specifications
Figure 4-3.
Centillion 1200N ATM Switch User Manual
NTP 297-8103-903