Technical data

TraverseEdge 2020 Applications and Engineering Guide, Chapter 3: System Applications
Page 3-66 Turin Networks Release 5.0.x
Figure 3-60 SONET Section and Line Overhead for STS-1
The DCCs used for inter-NE management through the PLMs are user configurable for either section or
line. Furthermore, bonded DCC or traditional DCC can be selected. Bonded DCC is the process of com-
bining multiple STS-1's DCC bytes into a contiguous stream of management traffic. Traditional DCC uses
only the first STS-1 of an STS-N. In traditional DCC, the bandwidth is greatly reduced from the bonded
case.
The TE-2020 supports the insertion and extraction of both the Section DCC and the Line DCC (but not
simultaneously).
The NE supports provisioning the use of either the section or line DCC bytes for communication on a per
facility basis. The default is line DCC. Section and line DCC are not both supported at the same time.
The DCCs can be turned off on a per facility basis. The default is enabled (in-service).
In order to provide support for future features such as DCC pass through which enables customers to trans-
parently communicate through our system, the configuration of the usable DCC channels occurs on a per
STS-1 basis. Furthermore, the STS-1s need not be contiguous.
The following example shows the selection of communication channels on a per STS-1 basis.