NEBS
出自 MBA智库百科(https://wiki.mbalib.com/)
NEBS (Network Equipment-Building System，網路設備構建系統)
目錄 |
NEBS是電信行業專業術語，表示網路設備構建系統。它是貝爾實驗室在70年代提出的一個概念，旨在幫助電話設備製造商瞭解服務供應商的需求和環境。它已經發展到一組規定電信環境中電信級設備可操作性的規範或測試。 NEBS 描述了典型本地貝爾運營公司（RBOC）中心局的環境。它包括空間和環境標準。它描述了典型電信設備的排列安放和設備所處的工作環境。
主要的貝爾核（Bellcore）是 GR-63-CORE， 網路設備建造系統(NEBS)要求：物理保護。
這個文件確定了用於安裝到本地貝爾運營公司中心局的新電信設備最小空間和環境標準。
安裝空間要求：
* 纜線分佈系統
* 分佈和互聯框架
*t電源設備
*操作支持系統
*纜線增強設施
工作環境要求：
* 溫濕度
*防火性
*設備操作性
*抗震性
*工作環境振動和運輸振動
* 空氣污染
* 聲學噪音
* 照明
NEBS認證標準分為三種級別，每個級別有自己的目標和用途，但第3級確保最大的設備可操作性，用於關鍵網路設備。 X335和x343提供符合NEBS 第3級標準的產品。What is "NEBS Level 3"? "NEBS Level 3" is a term from Bellcore special report, SR-3580. This report details 3 distinct functional levels of NEBS compliance based on GR-63-CORE and GR-1089-CORE. The levels allow a wide range of NEBS requirements to be applied to equipment based on application and network impact.
一級
NEBS第1級是指設備通過了確保網路設備中安全部署的一系列最小測試。"NEBS Level 1" means that people and equipment hazards and network degradation are minimized. NEBS Level 1 addresses the personnel and equipment safety requirements of GR-63-CORE and GR-1089-CORE. This is useful for getting prototypes into a lab trial. It's also a requirement that is imposed on Competitive Local Exchange Carriers (CLECs) in order for them to deploy equipment into an RBOC's network. This level doesn't address operability, this is addressed in Levels 2 and 3.
二級
NEBS第2級提供網路設備中設備可操作性的有限保證。"NEBS Level 2" addresses equipment operability, but in a controlled environment. For example, equipment could be used in a data center, however, if the equipment performs non-critical operations it could be used under environmental extremes. Note that this level is very rarely used because it is ambiguous.
三級
NEBS第3級（最苛刻的 “壓力”測試） 提供網路設備中設備可操作性的最大保證。
"NEBS Level 3" means the equipment is in the network for the long haul. We're talking about Carrier Class with this stringent level. The equipment will operate under the environmental extremes found in a central office. In a nutshell, the equipment meets all of the requirements of GR-63-CORE and GR-1089-CORE.
NEBS標準 – 一組基本的設備規範，設計用於：
- 確保設備與電話行業的電子環境的兼容性
- 簡化設備規劃和安裝
- 保護電信設備不會出現由於不兼容設備導致的業務宕機
- 防止干預許可的無線電發射機和其它極其類似的電信設備
- 最大限度地降低電信設備發生火災的風險
- 確保設備在電信環境中規定的溫度、濕度、振動、空氣污染範圍內運行
- 確保地震情況下設備和業務的可抗損毀性
- 保護員工免受傷害
