The PTP Telecom Profile
This paper is designed to help network engineers, network planners, and network
operations understand how to deploy Precision Time Protocol (PTP, or IEEE 1588).
PTP is a next generation, packetbased timing protocol targeted for use in asynchronous
network infrastructures based on packet transport technologies.
IEEE 1588-2008 introduces the concept of profiles to specify particular combinations
of options and attribute values to support a given application. This document describes
the “Telecom Profile”, recently released by the ITU-T as recommendation G.8265.1.
This profile addresses the application of the PTP to the frequency synchronization
of GSM, UMTS and LTE-FDD base stations.
This paper is one of a series of White Papers and Application Guidelines
produced by Symmetricom® as part of an overall Framework for Synchronization and
Timing in the Next Generation Network (NGN). These papers are intended to
help service provider network architects, planners, and engineers design and deploy
stable, robust Synchronization and Timing architectures to support applications and
services that will be deployed on the NGN.
The Precision Time Protocol defined in IEEE 1588-2008 introduces the concept of
profiles to specify particular combinations of options and attribute values to support
a given application. The ITU-T recently released the “Telecom Profile (recommendation G.8265.1),
designed to address the application of PTP to the frequency synchronization of
telecommunication systems, primarily cellular basestations. This document
describes the “Telecom Profile”, covering both the main features of the profile, and
the detailed operation of its more complex elements.