To support multi-vendor OI, the Alcatel-Lucent 1850 TSS-5 supports Target ID Address Resolution Protocol (TARP).
TARP provides NSAP-TID translations and is the established multi-vendor standard for SONET/SDH NEs that support TL1 OS interfaces. Alcatel-Lucent 1850 TSS-5 supports the TARP Data Cache (TDC) function to reduce the frequency of TARP propagation throughout the subnetwork and to improve performance.
The Alcatel-Lucent 1850 TSS-5 is developed to be compatible with any other-vendor NEs that support TARP, OSI, IAO LAN, and TL1 as specified in Telcordia ® GR-253. In addition, Alcatel-Lucent 1850 TSS-5's TARP Manual Adjacency feature enables it to operate in networks that include CMISE-based NEs which may not support TARP propagation. Alcatel-Lucent 1850 TSS-5 supports user provisioning of several OSI parameters to allow users to adjust their operations subnetwork, if necessary. For example, to support subnetwork partitioning of large subnetworks, Alcatel-Lucent 1850 TSS-5 supports user provisioning of NSAP area addresses and Level 2 Intermediate System (IS) functionality.
The Alcatel-Lucent 1850 TSS-5's compatibility with other-vendor NEs will be tested by independent third parties such as Telcordia ® on behalf of the SONET Interoperability Forum (SIF).
Alcatel-Lucent 1850 TSS-5 supports the following Alcatel-Lucent proprietary OI applications between Alcatel-Lucent NEs in multi-vendor subnetworks:
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