7-64
Cisco ONS 15454 DWDM Reference Manual, R8.5
78-18343-02
Chapter 7 Reconfigurable Optical Add/Drop Cards
7.12.1 40-WXC-C Faceplate Ports
• It is able to monitor optical power and control path attenuation using per-channel VOA
independently of the wavelength input-to-out port connection.
7.12.1 40-WXC-C Faceplate Ports
The 40-WXC-C card has six types of ports:
• COM RX: The COM RX port receives the optical signal from a preamplifier (such as the OPT-PRE)
and sends it to the optical splitter.
• COM TX: The COM TX port sends an aggregate optical signal to a booster amplifier card (for
example, the OPT-BST card) for transmission outside of the NE.
• EXP TX: The EXP TX port sends an optical signal to the other 40-WXC-C card within the NE.
• MON TX: The optical service channel (OSC) monitor.
• ADD/DROP RX: The 40-WXC-C card provides 40 input optical channels. For the wavelength
range, see Table 7-39 on page 7-67.
• ADD/DROP TX: The DROP TX port sends the split off optical signal that contains drop channels
to the 40-WXC-C card, where the channels are further processed and dropped.
Note The PP-MESH interconnects 40-WXC-C cards according to following rule: The EXP-TX port of
40-WXC-C in side “i” is connected to the 40-WXC-C EXP-j-RX port of all the other equipped or
provisioned 40-WXC-C cards. The side "i" goes from A to H and side "j" goes from ports 1 to 8 (Side
“j” has the same cardinality of the side letter (A<->1, B<->2, ....H<->8). These connections are relevant
for routing pourposes or to list the ports that are involved in an OCH-NC network. However, they are not
reported in CTC under node view -> Maintenance -> DWDM -> -> Mesh Patch Panel Internal
Patchcords.
Figure 7-33 shows the 40-WXC-C card faceplate.
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