23-11
Ethernet Card Software Feature and Configuration Guide, R7.2
January 2009
Chapter 23 E-Series and G-Series Ethernet Operation
Two-Port Unidirectional Transponder Mode
Figure 23-9 One-Port Bidirectional Transponder Mode
Two-Port Unidirectional Transponder Mode
Ethernet frames received at one port’s receiver will be transmitted out the transmitter of another port.
This mode is similar to two-port bidirectional transponder mode except only one direction is used
(Figure 23-10). One port has to be provisioned as unidirectional tran smit only and the other port as
unidirectional receive. The port configured as unidirectional transmit i gnores any lack of signal on the
receive port, so the receive port fiber does not need not be connected. The port configured as
unidirectional receive does not turn on the transmit laser, so the transmit port fiber does not need to be
connected.
This mode can be used when only one direction needs to be transmitted over CWDM/DWDM, for
example, certain video on demand (VoD) applications.
90913
G-Series Card
Tx Port
Rx Port Note:
This configuration can be used when the client
terminal's optical signal is single-mode, 1310 nm,
1550 nm, or 15xx.xx nm.
ONS Node
Cross-Connect
Card
Optical Card
Tx Port
Rx Port
GBIC Standard SX, LX, ZX
GBIC CWDM or DWDM
Ethernet TDM
xWDM Lambda 1
xWDM Lambda 2
xWDM Lambda 3
xWDM Lambda 4
Gigabit Ethernet Ports