Cyan Z77 - 2.5 G-LME4 Multiplex-Transponder Module

Cyan Z-Series Engineering and Planning Guide Release 5.0
Page 66 © 2013 Cyan, Inc. – All Rights Reserved. 700-0023-05-00 Rev. 1
2.3 2.5G-LME4 Multiplex-Transponder Module
The Cyan Z-Series 2.5G-LME4 is a 4-port muxponder (multiplex-transponder) module with integrated
OTN encoding for efficient 10G wavelength transport in the Z-Series multi-layer transport platforms.
Each module accepts any combination of up to four 2.5G OC-48, STM-16, and/or OTU1 signals that are
encoded/translated into discrete ODU1s and then multiplexed into a high-capacity 10G OTU2 wavelength
for managed DWDM transport.
Figure 32: Z-Series 2.5G-LME4 Module
Note: An ODU1 Express cross-connect (OC-48/STM-16 express) between a pair of 2.5G-LME4
modules requires a Ring Closure Module (RCM) to be installed in the Z77 shelf or a Release 4.0 (or
higher) Z77 shelf equipped with the XC-2800 switch fabric. RCMs and the XC-2800 switch fabric are
not required for the Z22 or the Z33 shelf.
The Release 4.0 (or higher) XC-2800 switch fabric consists of four individual switch-fabric modules
installed in the Z77 horizontal EFM slots. For additional information on the XC-2800, see XC-2800
Switch Fabric starting on page 135.
For additional information on the RCMs, see Ring Closure Modules starting on page 135.
The graphic below shows the 2.5G-LME4 muxponder functional block diagram.
Up to 4 2.5G Client
Interfaces (SFPs)
Any Combination of:
Up to 4 OTU1
Up to 4 OC-48
Up to 4 STM-16
ODU2
Mux/Demux
OTU2 10G Trunk Interface
(DWDM XFPs)
1 OTU2
Figure 33: Z-Series 2.5G-LME4 Functional Block Diagram
Trunk Interface
The 2.5G-LME4 module utilizes a single XFP for its trunk interface. Optical performance is determined by
the DWDM multiplexing components and the XFP module in use.
• Line format: OTU2
• FEC: GFEC – G.975, 10.709 Gbps; UFEC – G.975.1 Appendix 7, 11.095 Gbps
Client Interfaces
The 2.5G-LME4 module utilizes four SFP modules for client interfaces.
• Line formats: OTU-1, OC-48, STM-16
• FEC (OTU-1): GFEC – 9.75, 2.68 Gbps
• Jitter and wander: GR-253 compliant