GR-63-CORE Issue 3: 物理防护标准与技术更新

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GR-63-CORE ISSUE 3 是由 Telcordia Technologies 制定的一份通用要求文档，专注于网络基础设施和操作领域的物理保护标准。该版本是 LSSGR（Local Switching System Generic Requirements）的FR-64模块，TSGR（Transport Switching Generic Requirements）的FR-440部分，以及NEBSFR（National Electronics Building System Fire Protection Requirements）的FR-2063的一部分。此版本在2006年发布，取代了2002年4月发布的Issue 2。主要内容涉及对通信设备及其安装环境的物理安全保护措施，旨在确保电信网络设施的安全性和可靠性。文档详细规定了针对模块化光传输设备如AModule of LSSGR、FR-64的TSGR和FR-440级别的设备，以及NEBSFR标准下的FR-2063要求的硬件保护措施。重要更改在文档中用垂直线（|）标识，以便用户快速识别。此外，文档还强调了技术联络方式，如果需要获取这份文档，用户可以联系公司的文档协调员、Telcordia的客户服务经理，或者通过电话（美国1.866.672.6997或全球+1.732.699.6700）或访问官方网站http://telecom-info.telcordia.com获取。版权信息方面，GR-63-CORE ISSUE 3 是 Telcordia Technologies 的作品，享有1995年、2002年和2006年的版权，其中“Telcordia”和“NEBS”都是该公司的注册商标。总结来说，GR-63-CORE ISSUE 3 是一项关键的IT标准，对于设计、安装和维护电信设备时保证其物理安全具有重要意义，适用于电信行业的各个环节，对符合这些标准的产品进行认证将有助于提升通信系统的稳定性和安全性。

GR-63-CORE

Preface Issue 3, March 2006

xvi

NEBS

Requirements: Physical Protection

GR-63-CORE Introduction

1–1

Introduction

1.1 Purpose and Scope

This Generic Requirements document (GR) presents minimum spatial and

environmental criteria for all new telecommunications equipment used in Central

Offices (COs) and other environmentally controlled telecommunications equipment

spaces. These criteria were developed jointly by Telcordia and industry

representatives. They are applicable to switching and transport systems, associated

cable distribution systems, distributing and interconnecting frames, power

equipment, operations support systems, and cable entrance facilities. Compliance

with these requirements may increase network robustness, simplify equipment

installation, and promote the economical planning and engineering of equipment

spaces.

Telecommunications equipment, by nature of its physical installation in a building,

may be exposed to environmental stresses. The generic criteria presented in the

following sections are intended to help avoid equipment damage and malfunction

caused by such things as temperature and humidity, vibrations, airborne

contaminants, minimize fire ignitions and fire spread, as well as provide for

improved space planning and simplified equipment installation.

This document provides only those requirements related to the physical aspects of

equipment-building interfaces, including physical dimensions and environmental

performance criteria. Additional design requirements, including functional,

electrical, and reliability requirements, may be found in other requirements

documents.

1.2 Service Provider Role

Each telecommunications service provider may choose to include some or all of

these requirements in contracts or purchase orders. However, telecommunications

service providers may choose not to adopt these requirements. Such a decision is

made solely by each telecommunications service provider. Therefore, any supplier

or manufacturer is advised to communicate directly with service providers to obtain

that company's specific requirements. The requirements of each service provider

may vary.

In general, newly-designed systems and associated subassemblies shall be evaluated

against the criteria of this issue. Existing systems and subassemblies that have been

evaluated and conform to a previous issue of GR-63-CORE and that have

supporting evidence of such evaluations, do not need to be re-evaluated to this

revision. Modified or new subassemblies (e.g, line cards, circuit packs, etc.)

intended for systems evaluated using criteria from an earlier issue of GR-63-CORE

shall be evaluated using the criteria of this issue, and shall conform to the

requirements of GR-209-CORE, Generic Requirements for Product Change

Notices (PCNs).

GR-63-CORE

Introduction Issue 3, March 2006

1–2

1.3 Equipment Manufacturer Role

The equipment manufacturer shall, at a minimum, meet its own design standards

and design engineering requirements, and all requirements imposed by law.

Manufacturing requirements, manufacturing and workmanship standards, and the

use of accepted commercial practices supplement the manufacturer's design and

engineering criteria, and shall also be met when relevant to product integrity,

performance, and reliability.

Product integrity shall be maintained, and there shall be no deviations from physical

criteria that adversely affect product safety, reliability, interchangeability, life,

performance and operation, quality, maintenance, or aesthetics. The manufacturer

shall make any proposal to the telecommunications service provider that will

improve the product with respect to these factors. Acceptance of nonconforming

products is not the subject of this document. Such decisions are made by the

telecommunications service provider or its designated representative. The

manufacturer shall propose to the telecommunications service provider any

alternatives, deviations, or modifications to its product necessitated by site-specific

conditions or other factors.

Products shall be manufactured in accordance with the applicable requirements

identified by:

•

Federal Communications Commission (FCC)

•

National Electrical Code (NEC)

•

National Electrical Safety Code (NESC)

•

Department of Labor—Occupational Safety and Health Administration (OSHA)

•

All other applicable federal, state, and local requirements including, but not

limited to, statutes, rules, regulations, orders, or ordinances, or as otherwise

imposed by law.

Where requirements are not stated in this document, in contractual technical

requirements, or in other applicable documents, the manufacturer's requirements

consistent with industry standards shall be met.

Because of the complexity and variety of technologies used in network

telecommunications equipment, the criteria of this document cover a wide range of

application conditions. Engineering investigation or evaluation of a particular type

of equipment may indicate that the specific technology causes certain tests to be

unnecessary. In addition, network telecommunications equipment should be

performing its design-intended functions, when determining conformance to

performance criteria. The performance criteria shall be in accordance with

applicable Telcordia Generic Requirements, national and international standards.

The decision of applicable tests to be performed and functions for determining

performance criteria shall be mutually agreed between manufacturer and

telecommunications service provider, or representatives of telecommunications

companies. These decisions would be incorporated in a test plan mutually agreed to

between a manufacturer and telecommunications service provider or testing

laboratory.

NEBS

Requirements: Physical Protection

GR-63-CORE Introduction

1–3

1.4 Application Guidelines

1.4.1 COs and Similar Facilities

The criteria of this document are generally applicable to equipment spaces and

equipment installed in environmentally controlled telecommunications network

facilities such as COs, conditioned commercial facilities, and electronic equipment

enclosures.

In general, network equipment at remote locations shall comply with all the spatial

and environmental requirements of this document to the extent such spaces provide

the described environment.

1.4.2 Commercial Buildings

Network equipment systems also may be installed in non-telecommunications

exchange locations, such as commercial buildings. Areas within these buildings that

are used exclusively for the installation of communication equipment would be

under the control of the service provider. These locations should provide

environmental controls similar to those in a CO. To the extent these locations are

similar to a CO, the NEBS requirements provided in this document are suitable for

the equipment systems installed in these sites. For commercial building

environments that differ significantly from COs, the criteria contained in

GR-3108-CORE, Generic Requirements for Network Equipment in the Outside

Plant (OSP), may be more applicable. For some criteria and test methods,

GR-3108-CORE or other carrier specifications often refer back to portions of this

document. Each service provider may also have its own criteria for equipment

deployed in commercial building environments.

1.4.3 Non-Environmentally Controlled Locations

Electronic equipment locations and housings without environmental control are

generally prefabricated cabinets that are transportable and are normally installed

totally above ground on pads or poles. A number of requirements unique to active

equipment in these OSP locations, such as resistance to extreme temperatures,

salt-fog, fungus, and chemicals are contained in GR-3108-CORE. For some criteria

and test methods, GR-3108-CORE refers back to portions of this document. Each

service provider may also have its own criteria for equipment deployed in

non-environmentally controlled environments.

1.4.4 Other Locations

Other network equipment locations may have analogous environmental conditions

to those examined in this document. For these cases, portions of this document may

be referenced for use even if not specifically anticipated during test development. It

is expected that these criteria will supplement those developed for other locations

either through the GR process or as determined directly by the service provider.

GR-63-CORE

Introduction Issue 3, March 2006

1–4

1.5 Reasons for GR-63-CORE, Issue 3

Issue 3 of this GR reflects developments in the industry, as well as the available body

of industry standards for telecommunications equipment. The changes include:

•

Modified fire-resistance requirements that incorporate new ANSI methods and

specific carrier requirements

•

A new earthquake and office vibration method for wall-mounted products

•

New criteria specifying preferred equipment airflow patterns

•

New criteria and test method for thermal-margin testing

•

New criteria and test method for evaluating the effect of a fan failure in

forced air-cooled products

•

Revised acoustic limits based on sound power measurement

•

Package shock and vibration testing closely aligned with international

standards.

Where major additions or technical changes have occurred in Issue 3, the location

of the change is marked by a vertical bar (|) in the outer margin next to the change.

The new requirements for Issue 3 begin at absolute number [146]. GR-63-CORE,

Issue 3, completely replaces GR-63-CORE, Issue 2.

1.6 Structure and Use of This Document

This document is organized as follows:

•

Section 1, “Introduction”

•

Section 2, “Spatial Requirements” - Provides requirements for equipment and

cabling systems to be compatible with CO vertical and horizontal space

allocations and floor loading limits. Part of this overall scheme is the cable

pathways plan that coordinates the overhead cable distribution by allocating the

system and via cable to different levels, both parallel and transverse to

equipment frame lineups.

•

Section 3, “NEBS-2000 Framework Criteria” - This section formerly contained

NEBS-2000 Framework Criteria, but now contains a reference to ANSI T1.336-

2003, Engineering Requirements for a Universal Telecom Framework.

•

Section 4, “Environmental Criteria” - Provides requirements for equipment to

help ensure compatibility with the physical environment provided by network

facilities. This environment includes physical stresses from temperature,

humidity, fire, earthquake and airborne contaminants, as well as the acoustic

noise and illumination characteristics of these facilities. The requirements

should apply to all new equipment systems deployed in COs and other

environmentally controlled telecommunications equipment spaces.

•

Section 5, “Environmental Test Methods” - Presents test methods that should be

used to test equipment for conformance to the environmental requirements set

forth in Section 4.

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