Technical data

TraverseEdge 2020 Applications and Engineering Guide, Chapter 3: System Applications
Release 5.0.x Turin Networks Page 3-63
Figure 3-57 Point-to-Point 16-Wavelength DWDM Link Schematic
Most service provider networks require fully protected transport systems. To accomplish this, two Mux fil-
ters and two Demux filters (in this case two pairs, Base & Expansion, Mux and Demux) are deployed at
each end of diversely routed fiber pairs, effectively doubling the equipment and fibers shown in Figure 3-
57. In this configuration the VLX1010s provide multi-wavelength access to diverse fiber runs while the
TE-2020 supports standard SONET automatic protection switching (1+1, BLSR or UPSR) for failure
recovery.
Figure 3-58 shows an example of the equipment stack-up to realize one end of the protected point-to-point
networks. The top two 1RU chassis are two VLX1010s each equipped with one 8-Channel DWDM Mux
BASE filter tray and one 8-Channel DWDM Demux BASE filter tray. The next two 1RU chassis are two
VLX1010s each equipped with one 8-Channel DWDM Mux EXPANSION filter tray and one 8-Channel
DWDM Demux EXPANSION filter tray. Below the VLX1010s are a number of TE-2020s equipped with
some number of OC-48 and or OC-192 DWDM (ITU) PLMs. While there are no tributary PLMs or
shelves (e.g. DS3/EC1 Tributary Shelve or OTS2s, ETS2s) shown, the use of the VLX1010 DWDM trays
in no way constrains the TE-2020 configurations. All configurations shown in the TE-2020 Applications &
Engineering document are supported.