Technical data

TraverseEdge 2020 Applications and Engineering Guide, Chapter 3: System Applications
Page 3-70 Turin Networks Release 5.0.x
Generic Connectivity for Lower-Rate SONET Applications Across an OC-192
span
The transparent DCC function can be used to maintain generic DCC connectivity between a series of Non-
Turin Networks equipment operating at lower rates. For example, a 1+1 OC-12 device and a 1+1 OC-3
device can operate subtended off a TE-2020 OC-192 span. refer to Figure 3-65. The OC-192 side of the
span can be unprotected, 1+1 or UPSR.
Figure 3-65 Using DCC Transparency to Allow Non-Turin Networks Terminal Boxes
to Communicate
3.13.2 Turin Networks Transparent Overhead Specifications
1. Each SONET OC-n/nc port on the TE-2020 Main Shelf supports Section DCC payloads within
the following capacities:
NOTE: Up to 40 bi-directional transparent cross-connects are supported within a TE-2020 Main
Shelf.
2. Transparent connections are cross-connected into the first STS of each interface. For example,
in an OC-48 signal, transparent overhead can be cross-connected into STS #1 through STS #16.
3. The procedure for creating transparent overhead cross-connects is analogous to the procedure
for creating traffic cross-connects.
4. Slip buffering exists to account for timing variations between different clocking rates of the
interfaces.
5. The Section DCCs from ports involved in protection schemes, such as UPSR or 1+1, can be
configured to be transparent. However, the actual transparent Section DCC streams are not pro-
tected themselves, only the traffic. The Section DCCs are fixed and never switch.
6. Turin Networks Line DCC and transparent Section DCCs can coexist on the same optical inter-
OC-n Port Type # of Transparent SDCCs Supported
OC-3/3c 1
OC-12/12c 4
OC-48/48c 16
OC-192 40 (64 SDCC slots to choose from)
OC-12
OC-12
Non-White Rock EqptNon-White Rock Eqpt
OC-3
OC-3
Non-White Rock EqptNon-White Rock Eqpt
OC-3
OC-3
OC-192
VLX2020
Indicates Transparent SDCC Cross-connect
OC-12
OC-12
OC-192
OC-12
Non-White Rock Eqpt
OC-3
OC-3
Non-White Rock Eqpt
OC-3
OC-3
OC-192
VLX2020
OC-12
OC-192
OC-12
OC-12
OC-12
OC-3
OC-3
Non-White Rock Eqpt
SYS-0521-A
OC-192