8-25
Cisco ONS 15454 DWDM Reference Manual, R8.5
78-18343-02
Chapter 8 Transponder and Muxponder Cards
8.7 MXP_2.5G_10G Card
The MXP_2.5G_10G card is tunable over two neighboring wavelengths in the 1550-nm, ITU 100-GHz
range. It is available in 16 different versions, each of which covers two wavelengths, for a total coverage
of 32 different wavelengths in the 1550-nm range.
Note ITU-T G.709 specifies a form of FEC that uses a “wrapper” approach. The digital wrapper lets you
transparently take in a signal on the client side, wrap a frame around it and restore it to its original form.
FEC enables longer fiber links because errors caused by the optical signal degrading with distance are
corrected.
The port can also operate at 10.70923 Gbps in ITU-T G.709 Digital Wrapper/FEC mode.
Caution Because the transponder has no capability to look into the payload and detect circuits, an
MXP_2.5G_10G card does not display circuits under card view.
Caution You must use a 20-dB fiber attenuator (15 to 25 dB) when working with the MXP_2.5G_10G card in a
loopback on the trunk port. Do not use direct fiber loopbacks with the MXP_2.5G_10G card. Using
direct fiber loopbacks causes irreparable damage to the MXP_2.5G_10G card.
You can install MXP_2.5G_10G cards in Slots 1 to 6 and 12 to 17.
Caution Do not install an MXP_2.5G_10G card in Slot 3 if you have installed a DS3/EC1-48 card in Slots 1or 2.
Likewise, do not install an MXP_2.5G_10G card in Slot 17 if you have installed a DS3/EC1-48 card in
Slots 15 or 16. If you do, the cards will interact and cause DS-3 bit errors.
You can provision this card in a linear configuration. MXP_2.5G_10G cards cannot be provisioned as a
BLSR/MS-SPRing, a path protection/SNCP, or a regenerator. They can be used in the middle of
BLSR/MS-SPRing or 1+1 spans only when the card is configured for transparent termination mode.
The MXP_2.5G_10G port features a 1550-nm laser on the trunk port and four 1310-nm lasers on the
client ports and contains five transmit and receive connector pairs (labeled) on the card faceplate. The
card uses a dual LC connector on the trunk side and SFP connectors on the client side for optical cable
termination.
Note When you create a 4xOC-48 OCHCC circuit, you need to select the G.709 and Synchronous options. A
4xOC-48 OCHCC circuit is supported by G.709 and synchronous mode. This is necessary to provision
a 4xOC-48 OCHCC circuit.
Figure 8-16 shows the MXP_2.5G_10G faceplate.
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