Technical data

TraverseEdge 2020 Applications and Engineering Guide, Chapter 3: System Applications
Page 3-68 Turin Networks Release 5.0.x
• Unprotected
In all cases, each non-Turin Networks SDCC “sees” the other non-Turin Networks node(s) as if there is no
TE-2020 equipment between them. The TE-2020 is transparent.
OC-48 Point-to-Point Upgrade to OC-192 - Retain Original OC-48 System
The most basic application for DCC transparency is the upgrade of an existing OC-48 1+1 link to OC-192
link using the TE-2020. Refer to Figure 3-62. In this configuration the OC-48 product remains in use, but
the OC-48 transport is replaced with OC-192 on the TE-2020. After installation the OC-192 configuration
is ¼ consumed with the existing OC-48 traffic and the other ¾
of the OC-192 is available using ports on
the TE-2020.
Figure 3-62 also demonstrates an upgrade from a 2 node OC-48 UPSR ring to a 2 node OC-192 UPSR
ring. The OC-48 can be mapped as unprotected traffic on the OC-192, consuming ¼ of the OC-192 ring,
and still preserve the protection mechanism via the path switching on the OC-48 ring. Optionally, the OC-
48 UPSR ring can be terminated on the OC-48 side of the TE-2020 and the traffic mapped into the OC-192
ring as protected traffic. The DCC is continued transparently through the OC-192 to maintain connectivity
between the nodes on the ring. This method would also consume ¼ of the OC-192 ring bandwidth.
Figure 3-62 Transparent SDCC from Existing OC-48 Equipment Over an OC-192 system
OC-48 Ring Upgrade to OC-192 Retaining Original OC-48 System
This application takes an existing OC-48 UPSR ring and places it onto an OC-192 UPSR ring. Refer to
Figure 3-63. When mapping the OC-48 as unprotected traffic on the OC-192 it consumes ¼ of the OC-192
ring, and still preserve the protection mechanism via the path switching on the OC-48 ring. Optionally, the
OC-48 UPSR ring can be terminated on the OC-48 side of the TE-2020 and the traffic mapped into the
OC-192 ring as protected traffic. The DCC is continued transparently through the OC-192 to maintain con-
nectivity between the nodes on the ring. This method would also consume ¼ of the OC-192 ring band-
width.