Technical data

TraverseEdge 2020 Applications and Engineering Guide, Chapter 2: System Features
Release 5.0.x Turin Networks Page 2-9
2.4 TE-206
To further enhance the TE-2020 traffic terminating capabilities, Turin Networks offers the TE-206 system.
The TE-206 is an access oriented multi-service platform designed to extend the network application reach
for the TE-2020 product family. The TE-206, although designed based on the TE-2020, may also be con-
figured to work with other SONET hub nodes. As a result, the TE-206 has been provided with its own doc-
umentation set. Please refer to the TE-206 customer documentation for additional details although some
system applications will be provided in Chapter 3 System Applications in this guide
2.5 DTAU Feature
With the 5.0 release of the TE-2020 product, Turin Networks has added a DTAU (Digital Test Access
Unit) functionality for Dual-FAD configuration of DS-1s or DS3s. A Dual-FAD is configured on the TE-
2020 using the ED-T1 or ED-T3 commands. Integrated test access is a group of capabilities (together
referred to as a Digital Test Access Unit, DTAU) allowing carriers to perform a variety of in-service and
out-of-service tests on circuits as they pass through a multiplex system. Telcordia has defined a generic
architecture for this feature in GR-818-CORE, Network Maintenance: Access and Testing - Generic Test
Architecture (germane to this application is Section 6, Digital Test Access Unit of GR-818). The generic
test architecture is shown in Figure 2-7
Figure 2-7 Test Architecture
To implement this feature set, the TE-2020 supports the following capabilities,
• A number of Test Access Ports (TAPs)
• A set of TL-1 commands with which the Test System controls the test access feature
• A Control Link over which the TSC/RTU communicates with the TE-2020
• Ability to provide access designated circuits
a. Monitor one or both directions of a circuit