Dti Server Hierarchy And M-Cmts Elements; Overview - Symmetricom TimeCreator 1000 User Manual

Chapter 1 Overview of the TimeCreator 1000

Overview

Overview
The TimeCreator 1000, shown in
Server that delivers accurate timestamp and frequency synchronization, and with
GPS it can also provide Time of Day (TOD) to DTI client elements in a Modular
Cable Modem Termination System (M-CMTS) architecture. M-CMTS elements
shown in Figure 1-1
DTI to synchronize the DOCSIS Timestamp and Symbol Clock used in the DOCSIS
communications between modems and the headend/hub. The TimeCreator 1000
functions as either a root server or subtending server. The root server is at the top of
a server hierarchy and is the source of traceable time and frequency for all
subtending DTI servers and clients in a building. The subtending server receives its
time and frequency reference through a direct connection to a root server's DTI link
connector; a subtending server cannot be referenced to another subtending server.
Figure 1-1.

DTI Server Hierarchy and M-CMTS Elements

24 TimeCreator 1000 User's Guide
Figure 1-2, is a DOCSIS Timing Interface (DTI)
(Edge QAMs, Upstream Receivers, M-CMTS Core, etc.) use
097-93100-01 Revision C – February, 2010