Specifications

1-22
Cisco ONS 15530 Planning Guide
OL-7708-01
Chapter 1 System Overview
System Components
Figure 1-10 Splitter 2.5-Gbps ITU Trunk Card Architecture
The Cisco ONS 15530 supports up to four 2.5-Gbps ITU trunk cards for a total of four channels.
10-Gbps ITU Trunk Cards
The 10-Gbps ITU trunk card sends and receives the ITU grid wavelength signal to and from an OADM
module. This card accepts up to four 2.5-Gbps (3.125-Gbps line rate) electrical signals from the ESCON
aggregation cards, 8-port FC/GE aggregation cards, or a 4-port FC aggregation card, and combines them
into one 10-Gbps signal, which is converted to the ITU grid wavelength, or channel. The 10-Gbps ITU
trunk card has four separate redundant interfaces to the backplane, each connecting to the switch fabrics
on the active and standby CPU switch modules.
Note When designing your network, consider designs with 10-Gbps ITU trunk cards as well as designs with
2.5-Gbps ITU trunk cards. The type of ITU trunk card used affects the design parameters, such as
dispersion compensation, amplification, and available wavelengths.
The 10-Gbps ITU trunk card has two version: nonsplitter and splitter. The nonsplitter version has only
one pair of optical connectors on the front panel, which connects to either the east or the west OADM
module, and can be used for unprotected, line card protected, or switch fabric protected applications (see
Figure 1-11).
QuadPHY
LRC
Splitter
module
2x2
Switch
PIN Diode
Tx
Rx
85843
64B/66B
Encoder
2.5-Gbps
ITU
transceiver
West Tx
East Tx
West Rx
East Rx
Controlled by
Rx demux FPGA