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Invitation for Participation

GR-1244-CORE
Clocks for the Synchronized Network: Common Generic Criteria, Issue 5

GR-1244-CORE, Issue 4, October 2009, provides criteria that generally apply to the various clocks used in the synchronized network. Such clocks are deployed in many types of telecommunications equipment, including transport Network Elements (NEs), digital switches, Timing Signal Generators (TSGs), and some routers and wireless base stations, and can have a critical impact on network performance. For the most part, the criteria contained in Issue 4, along with related criteria found in various application-specific documents (e.g., GR-253-CORE, Synchronous Optical Network (SONET) Transport Systems: Common Generic Criteria; and GR-378-CORE, Generic Requirements for Timing Signal Generators), have been found to be appropriate and sufficient. However, there is one major issue that Telcordia believes should be addressed in a proposed re-issue. Specifically:

• What modifications need to be made to the criteria (including descriptions of input reference signals used in various tests and output signal Time Deviation [TDEV] and Maximum Time Interval Error [MTIE] masks) to accommodate the testing of clocks that receive their timing in the form of Time of Day (ToD) signals or timestamps (e.g., 1 pulse per second signals, PTPv2 timestamps carried over User Datagram Protocol [UDP]/Internet Protocol [IP]/Ethernet) and/or generate ToD signals or timestamps.

In addition, updates may be needed to reflect changes that have been made in other documents subsequent to the release of GR-1244-CORE, Issue 4, or to address issues raised by the participants in this work effort.

The Value of Participation

GR-1244 addresses key timing and synchronization issues, and criteria that are vital to equipment suppliers. As a participating company in Issue 5 of GR-1244, you will have the opportunity to:

• Ensure your business needs are appropriately addressed
• Offer input to proposed changes to existing requirements and to define new requirements
• Network with other telecommunications company peers.

Telcordia Invites Your Participation

Pursuant to provisions of the Telecommunications Act of 1996 related to the development of industry-wide generic requirements, Telcordia invites all interested parties to participate in this GR project. If your company is interested in participating in this activity, please contact Telcordia. An Enterprise License is included in the participation fee for this GR project.

To proceed with this project, it is expected that Telcordia will need at least four industry participants. While the project can proceed with fewer participants, deliverables may change as a result. The participating industry members will be apprised regularly of project status and any changes in deliverables.