Primary Reference Sources: Generic Requirements
Document Number GR-2830
Issue Number 02
Issue Date Dec 1995
ABSTRACT: This document provides the Telcordia view of generic requirements for equipment intended to function as a Primary Reference Source
(PRS) for a Local Exchange Carrier (LEC) or other service provider. The PRS is at the top of the digital network synchronization
hierarchy, in accordance with the Digital Network Synchronization Plan, GR-436, Digital Network Synchronization, and ANSI
T1.101. The most notable characteristic of the PRS is its long-term accuracy, which must be at least as good as 1 part in 10 with
verification to Universal Coordinate Time (UCT).
When using GR-2830, you may need to refer to GR-63, GR-1089, SR-332, GR-378, GR-454, GR-474, GR-487,
GR-499, TR-TSY-000827, GR-828, GR-839, and/or GR-2861. You may also want to refer to GR-499, GR-253,
GR-284, GR-436, GR-820, GR-826, GR-836, GR-1244, ANSI T1.101, ANSI T1.315, and/or ITU-T G.811.
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