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Cisco ONS 15454 DWDM Reference Manual, R8.5
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Chapter 8 Transponder and Muxponder Cards
8.8.1 Key Features
The digital wrapper function (ITU-T G.709 compliant) formats the DWDM wavelength so that it can be
used to set up GCCs for data communications, enable FEC, or facilitate PM.
The MXP_2.5G_10E_C and MXP_2.5G_10E_L cards work with OTN devices defined in ITU-T G.709.
The cards support ODU1 to OTU2 multiplexing, an industry standard method for asynchronously
mapping a SONET/SDH payload into a digitally wrapped envelope. See the “8.8.5 Multiplexing
Function” section on page 8-39.
The MXP_2.5G_10E_C and MXP_2.5G_10E_L cards are not compatible with the MXP_2.5G_10G
card, which does not support transparent termination mode.
You can install MXP_2.5G_10E_C and MXP_2.5G_10E_L cards in Slots 1 to 6 and 12 to 17. You can
provision a card in a linear configuration, as a BLSR/MS-SPRing, a path protection/SNCP, or a
regenerator. The cards can be used in the middle of BLSR/MS-SPRing or 1+1 spans when the cards are
configured for transparent termination mode.
The MXP_2.5G_10E_C card features a tunable 1550-nm C-band laser on the trunk port. The laser is
tunable across 82 wavelengths on the ITU grid with 50-GHz spacing between wavelengths. The
MXP_2.5G_10E_L features a tunable 1580-nm L-band laser on the trunk port. The laser is tunable
across 80 wavelengths on the ITU grid, also with 50-GHz spacing. Each card features four 1310-nm
lasers on the client ports and contains five transmit and receive connector pairs (labeled) on the card
faceplate. The cards uses dual LC connectors on the trunk side and use SFP modules on the client side
for optical cable termination. The SFP pluggable modules are SR or IR and support an LC fiber
connector.
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.
8.8.1 Key Features
The MXP_2.5G_10E_C and MXP_2.5G_10E_L cards have the following high level features:
• Four 2.5 Gbps client interfaces (OC-48/STM-16) and one 10 Gbps trunk. The four OC-48 signals
are mapped into a ITU-T G.709 OTU2 signal using standard ITU-T G.709 multiplexing.
• Onboard E-FEC processor: The processor supports both standard RS (specified in ITU-T G.709) and
E-FEC, which allows an improved gain on trunk interfaces with a resultant extension of the
transmission range on these interfaces. The E-FEC functionality increases the correction capability
of the transponder to improve performance, allowing operation at a lower OSNR compared to the
standard RS (237,255) correction algorithm. A new BCH algorithm implemented in E-FEC allows
recovery of an input BER up to 1E-3.
• Pluggable client interface optic modules: The MXP_2.5G_10E_C and MXP_2.5G_10E_L cards
have modular interfaces. Two types of optics modules can be plugged into the card. These include
an OC-48/STM 16 SR-1 interface with a 7-km (4.3-mile) nominal range (for short range and
intra-office applications) and an IR-1 interface with a range up to 40 km (24.9 miles). SR-1 is
defined in Telcordia GR-253-CORE and in I-16 (ITU-T G.957). IR-1 is defined in Telcordia
GR-253-CORE and in S-16-1 (ITU-T G.957).
• High level provisioning support: The cards are initially provisioned using Cisco TransportPlanner
software. Subsequently, the card can be monitored and provisioned using CTC software.
• Link monitoring and management: The cards use standard OC-48 OH (overhead) bytes to monitor
and manage incoming interfaces. The cards pass the incoming SDH/SONET data stream and its
overhead bytes transparently.
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