However, for the next 5–7 years, . Carriers are currently rejecting equipment certified to Issue 4. If you are designing new hardware, you must design to Issue 5.
GR-63-CORE Issue 5, released by Telcordia (now Ericsson) in December 2017, is the foundational standard for physical protection and environmental criteria for telecommunications equipment, with a focus on NEBS Level 3 compliance. The standard introduces updated requirements for fire resistance, seismic testing, and thermal conditions to ensure equipment durability in controlled environments. The full standard is available through authorized distributors, such as Intertek Inform and Telcordia's database . Telcordiahttps://telecom-info.njdepot.ericsson.net GR-63 - NEBS Requirements: Physical Protection - Telcordia gr-63-core issue 5 pdf
One of the most significant changes in Issue 5 involves fire safety. The previous issue relied on test methods that have since been revised or superseded by organizations like UL (Underwriters Laboratories) and ASTM. Issue 5 aligns the requirements with modern fire testing protocols, specifically updating references to standards like (Tests for Flammability of Plastic Materials) and ASTM E84 (Surface Burning Characteristics). However, for the next 5–7 years,
In the high-stakes world of carrier compliance, ignorance of the latest issue is a liability. Make GR-63-CORE Issue 5 your reference manual—because Mother Nature does not follow Issue 4. GR-63-CORE Issue 5, released by Telcordia (now Ericsson)
