Centillion 1200N ATM Switch User Manual 4-1
NTP 297-8103-903
Hardware Specifications
This section describes overview of the flo w of ATM cell and each functional block
of the ATM Switch.

Principal Functions of the ATM Switch

„Accommodates various ATM lines
The ATM Switch can interface various ATM lines by accommodating both
optical lines and metallic lines, different throughputs, and different protocols.
The ATM Switch is equipped with interfaces for various ATM lines.
„Cell Switching
The ATM Switch identifies the destination ATM line using the cell header
information in the ATM cell sent over the ATM line, then sends the cell. The
ATM Switch has a switching capacity of 4 lines at 622 Mbps o r , in throughput ,
2.5 Gbps.
„Fixed path setting
The path is normally set according to the connection information stored in the
PCMCIA ATA card. Path setting is changed by changing the connection
information from an external MA T. When the ATM Switch is reset, the path is
set according to the PVC connection information stored in the PCMCIA card
or the PVC connection information downloaded from an external source.
„Variable path setting
The ATM Switch has a network address - line table to realize this function.
This table is automatically generated by ILMI function (dynamic r outing table)
and/or set from a MAT (static routing table).
„Traffic control
When competition occurs in sending out cells, this traffic control function
prevents the cell with a higher priority from being delayed or discarded.
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