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Cisco ONS 15454 DWDM Installation and Operations Guide, R6.0
April 2006
Chapter 16 Card Reference
16.8 Transponder and Muxponder Cards
16.8 Transponder and Muxponder Cards
This section describes the transponder (TXP) and muxponder (MXP) cards. See the “NTP-G32 Install
the Transponder and Muxponder Cards” procedure on page 3-43 as needed. Detailed specifications for
the cards are found in Appendix B, “Hardware Specifications.”
TXP and MXP cards detect SF, LOS, or LOF conditions on the optical facility. Refer to the Cisco ONS
15454 Troubleshooting Guide or the Cisco ONS 15454 SDH Troubleshooting Guide for a description of
these conditions. The cards also count section and line BIP errors from B1 and B2 byte registers in the
section and line overhead.
16.8.1 TXP_MR_10G Card
The 10-Gbps Transponder–100-GHz–Tunable xx.xx-xx.xx card (TXP_MR_10G) processes one
10-Gbps signal (client side) into one 10-Gbps, 100-GHz DWDM signal (trunk side). It provides one
10-Gbps port per card that can be provisioned for an STM-64/OC-192 short reach (1310-nm) signal,
compliant with ITU-T G.707, G.709, ITU-T G.691, and Telcordia GR-253-CORE, or a 10GBASE-LR
signal compliant with IEEE 802.3.
The TXP_MR_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 trunk port operates at 9.95328 Gbps (or 10.70923 Gbps with ITU-T G.709 Digital Wrapper/FEC)
and at 10.3125 Gbps (or 11.095 Gbps with ITU-T G.709 Digital Wrapper/FEC) over unamplified
distances up to 80 km (50 miles) with different types of fiber such as C-SMF or dispersion compensated
fiber limited by loss and/or dispersion.
Caution Because the transponder has no capability to look into the payload and detect circuits, a TXP_MR_10G
card does not display circuits under card view.
Caution You must use a 15-dB fiber attenuator (10 to 20 dB) when working with the TXP_MR_10G card in a
loopback on the trunk port. Do not use direct fiber loopbacks with the TXP_MR_10G card. Using direct
fiber loopbacks causes irreparable damage to the TXP_MR_10G card.
You can install TXP_MR_10G cards in Slots 1 to 6 and 12 to 17 and provision this card in a linear
configuration. TXP_MR_10G cards cannot be provisioned as a BLSR/MS-SPRing, a path
protection/SNCP, or a regenerator. They can only be used in the middle of BLSR/MS-SPRing and
1+1 spans when the card is configured for transparent termination mode.
The TXP_MR_10G port features a 1550-nm laser for the trunk port and a 1310-nm laser for the for the
client port and contains two transmit and receive connector pairs (labeled) on the card faceplate.
Figure 16-54 shows the TXP_MR_10G faceplate and block diagram.
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