Nortel Networks NTRN10AN, 3500 manual Test Access

2-160Operation, administration, and maintenance (OAM) features

Test Access

The test access feature monitors and tests signal quality of cross-connects through a test access port (TAP). This feature provides quick and reliable confirmation of service performance, as well as isolation of trouble when failure occurs in the network.

This feature is supported on SONET network elements.

Test access implementation complies with the latest issues of:

•GR-818-CORE, Network Maintenance: Access and Testing - Generic Test Architecture

•GR-834-CORE, Network Maintenance: Access and Testing Messages

•GR-1402-CORE, Network Maintenance: Access And Testing - DS3 HCDS TSC/RTU and DTAU Functional Requirements

•GR-3008-CORE, Network Maintenance: Access and Testing - SONET STS-1 and SUB-STS-1 TSC/RTU and DTAU Functional Requirements

•GR-2996-CORE, Generic Criteria for SONET Digital Cross-Connect Systems

•GR-253-CORE, Synchronous Optical Network (SONET) Transport Systems: Common Generic Criteria

Figure 2-52 on page 2-162illustrates the organization of the main components of the test access feature. The testing operations systems (TOS) sends testing requests in the form of TL1 commands to the test access equipment through an internal data network. The test access equipment is in the supported mode of test controller system (TCS). In the TCS mode, the test access equipment manages the test access session and sends TL1 commands to the network element. Communication between the test access equipment and network element occurs through a TCP/IP control link.

Site Manager Release 6.0 introduced a new application called “Test Access Sessions Application” which will allow a user to fully manage their test access sessions from Site Manager. Figure 2-51 on page 2-161shows the new Test Access Sessions Management window.

OPTera Metro 3500 Multiservice Platform NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004