Cyan Z-Series Engineering and Planning Guide Release 5.0
700-0023-05-00 Rev. 1 © 2013 Cyan, Inc. – All Rights Reserved. Page 61
2.2 DTM-8 and DTM-8G Transponder Modules
The Cyan Z-Series DTM-8 is a quad transponder module. DTM-8 modules encode Ethernet and
SONET/SDH client-side signals into a standard G.709 OTN optical channel (OTU2 DWDM) for DWDM
drop-and-insert services in the Z-Series multi-layer transport networking platforms. You can independently
provision each of the four DTM-8 transponders as 10GbE, OC-192/STM-64 SONET/SDH format, or as an
OTU2 or OTU1e regenerator.
The DTM-8G module supports two OC-192/SDH and two 10GbE drop interfaces when functioning as a
transponder. When functioning as a regenerator, it supports four wavelengths of any signal format
(OC-192/10GbE). The module is capable of encoding Ethernet and SONET/SDH signals into OTN optical
channels for DWDM drop-and-insert services in Z-Series multi-layer transport platforms. The DTM-8G
module also functions as a quad OTU2 regenerator, and supports express traffic.
Figure 29: Cyan Z-Series DTM-8 Module
The graphics below show the DTM-8 and DTM-8G transponder functional block diagrams.
3R Regen
OTN Mapping
Up to 4 10G Client
Interfaces (XFPs)
Up to 4 OTU2/OTU2e
Up to 4 OC-192/STM-64
Up to 4 10GbE LAN
Up to 4 OTU1e
Any Combination of:
Up to 4 10G Trunk Interfaces
(DWDM XFPs)
Up to 4 OTU2/OTU2e
DTM-8
Up to 4 OTU1e
Figure 30: DTM-8 Functional Block Diagram
3R Regen
OTN Mapping
Up to 4 10G Client
Interfaces (XFPs)
Any Combination of:
Up to 4 OTU2
Up to 2 OC-192/STM-64
Up to 2 10GbE LAN
Up to 4 10G Trunk Interfaces
(DWDM XFPs)
Up to 4 OTU2
DTM-8G
Figure 31: DTM-8G Functional Block Diagram
XFP Interfaces
The DTM-8 and DTM-8G modules utilize 8 XFPs that are configurable as either trunk or client interfaces.
For the DTM-8G module, XFP slots 1, 3, 5, and 7 support OTU2 trunk interfaces. XFP slots 2 and 4 support
OC-192, STM-64, and OTU2 client interfaces. XFP slots 6 and 8 support OTU2 and 10GE LAN client
interfaces. For the DTM-8 module, each XFP slot supports an OTU2, OTU2e (overclocked rate), OTU1e,
OC-192/STM-64 SONET/SDH, or 10GE LAN interface.
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