R3-8 states that a dimensional drawing of the equipment must be supplied and enclosed in the test report. R3-7 is that a frame must have the ability to join to an adjacent frame at the top. The thirteen new Rs and Os include R3-4 and R3-5 say that access to anchoring bolts is needed when shelves are installed in a frame. The section includes most of the original Rs and Os from Section 2 and thirteen new Rs and Os. Section 3 now defines the spatial requirements for frames and chassis. Section 3 – Equipment Spatial Design Requirements for Frames and Chassis By doing this, Sections 3 and 4 have become much cleaner and easier to follow for both manufacturers and laboratories. Other requirements and objectives that are moved around in the document can be tracked between the versions by using their absolute number, which is the bracketed number in the Rs or Os. In the latest version, the Section 4 Rs and Os dealing with building layouts, such as Central Office Lighting Requirement R4-98 and Objective O4-99, are moved to Section 2 and relabeled as R2-31 and O2-32. In previous issues of the document, space planning requirements and objectives were intertwined with test requirements throughout Section 4. Section 2 – Facility and Space Planning Requirements These include surface temperature, mix flowing gas, hygroscopic dust, and acoustics. Some tests remain unchanged and will be skipped in this recap. In Section 4, some of the technical changes that will be reviewed include a new operational high temperature requirement based on the airflow of the equipment under test (EUT), new energy efficiency requirements, and an optional operational random vibration test, to name a few. Activating this section allows for segregation between the office space planning requirements (Rs) and objectives (Os) and equipment spatial Rs and Os. For the Issue 4 release, the section is activated and renamed as “Equipment Spatial Design Requirements for Frames and Chassis”. In the Issue 3 release of 2006, this section was deleted from the document and was left dormant. Going back to the Issue 2 version of the specification in 2002, Section 3 was a look forward to generic framework requirements. The first change you will notice is the reactivation of Section 3.

It has been six years since the document was updated and, as in previous releases, the specification has numerous technical changes. Telcordia recently released GR-63-CORE Issue 4 “Physical Protection Requirements for Network Telecommunications Equipment”, with a total of 27 new requirements (Rs) and objectives (Os).

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