ANSI SCTE 232-2019 pdf free download.Key Performance Metrics: Energy Efficiency & Functional Density of CMTS, CCAP, and Time Server Equipment
1.1. Executive Summary
This document is the second of multiple parts in a series that provides the cable operator with a standard reference to determine how well a piece of rack or shelf equipment performs in terms of minimizing the power required to do its particular job. In addition, this standard provides the means to quantify the amount of useful work the equipment provides per physical space. This part of the series focuses on the CMTS, CCAP, and other related cable operator critical facility equipment.
1.2. Scope
Cable operator networks are large expansive networks that involve hundreds if not thousands of miles of coaxial or fiber cable powered by power supplies in the outside plant and connecting customers to critical infrastructure facilities such as hubs, headends, data centers, regional, and national distribution datacenters. In these facilities is a vast array of equipment responsible for the production and support of the cable operator’s products and services such as voice, video, data, home automation and security, and Wi-Fi. The importance of powering all of these devices in the critical facilities is ever increasing as the customer expectation is for 100% availability due to the critical nature of the services being provided to business and residential customers. This document defines how to use a standard methodology to measure the density of hardware to meet the needs of optimizing critical space, as well as measuring energy consumption for the various network element classes. This part of the series focuses on the CMTS,CCAP, and other related cable operator critical facility equipment.
1.2.1. Applicability to Critical Facilities
The energy efficiency and functional density metrics in this document apply to critical facilities used by cable operators. Critical facilities are defined in section 5.2.
1.2.2. Hardware Service Feature Density Metrics
This standard defines the method to calibrate product density, in terms of service features per amount of space utilized.
1.2.3. Energy Consumption Metrics
This standard defines the method to calibrate energy consumption based on service features such as Watts per Downstream Channel, Watts per Service Group, or similar for cable headend, hub, and cable subscriber access equipment.
1.2.4. Applicable Equipment
The energy efficiency and functional density metrics in this standard apply to all indoor equipment used in critical facilities that functions as one or more of the following:
• “Legacy” (i.e. pre-CCAP) CMTS broadband routing equipment – in particular, the Integrated Cable Modem Termination System (I-CMTS)
• Converged Cable Access Platform (CCAP) – including Integrated CCAP (I-CCAP) and Distributed CCAP Architecture (DCA) equipment
• PTP and NTP Time Servers
1.2.5. Non-Applicable Equipment
The energy efficiency and functional density metrics in this standard do NOT apply to the following equipment classes.
• Customer Premises Equipment (CPE)
• Outdoor Plant and associated powering equipment except for DCA modules that will be included
in the energy efficiency metrics
• Facilities equipment covered by SCTE 184, such as
o Generators and line-power back-up systems
o Building HVAC control and monitoring equipment
o Logistical and physical support such as lighting, fire alarming, and security systems, etc.
1.3. Benefits
This standard defines energy and functional density specific performance metrics based on service
features that are inherent to the type of equipment. Standard metrics such as watts/QAM Channel and watts/Service Group for cable access equipment are identified. This standard will contribute to improve the overall energy footprint by enabling engineering driven decisions that reduce energy consumption at the source of power consumption.
1.4. Intended Audience
Cable operator headend and hub engineers, procurement teams, and operations staff.
