Telcordia Electromagnetic Compatibility (EMC) and Electrical Safety - Generic Criteria for Network Telecommunications Equipment
Document Number GR-1089
Issue Number 08
Issue Date Jul 2022
Replaces TA-NWT-001089 Issue02
Telecommunications service providers use GR-1089 to ensure that their telecommunications equipment meets the Electromagnetic
Compatibility (EMC) and electrical safety criteria necessary to perform safely and reliably. The NEBS criteria in this document covers
equipment in Central Offices (COs); equipment in the Outside Plant (OSP) at locations such as Controlled Environmental Vaults (CEVs),
Electronic Equipment Enclosures (EEEs), wireless applications and huts; equipment in uncontrolled structures such as cabinets; and
network equipment at the customer premises.
Telecommunications equipment, by nature of its application in the telecommunications network, may be exposed to one or more sources
of electromagnetic energy. The system-level generic criteria for EMC presented in this NEBS document are intended to help avoid
equipment damage and malfunction because of lightning, 60-Hz commercial power fault conditions, Electrostatic Discharge (ESD),
Electrical Fast Transient (EFT), Electromagnetic Interference (EMI), operation in the presence of a DC potential difference, and
operation in a steady-state induced voltage environment. Safe voltage levels for intentionally applied sources, electrochemical
corrosion effects, grounding, and DC powering are considered as well.
GR-1089 applies to wireless systems providing fixed services that are installed in locations with telecommunications network
equipment or information technology networking equipment. It also applies to equipment that is mounted outside the facility and whose
antennas are integrally mounted or mounted on the roof or on an antenna mast.
GR-1089 issue 8 has been revised since Issue 7 was published in December 2017. The most extensive technical changes are listed
- Comments in GR-1089-ILR Issue 7B, September 2020, are the basis for this update. This Issues List Report was reviewed with
previous technical forum members.
- Updates were made to Section 9.8.3 "Bonding of Battery Return (BR) Input Terminals", testing procedures and criteria. Specific
attention was made to update R9-16  that provides requirements and test methods to evaluate equipment in a DC-I configuration.
- A new port Type 9 was added for other metallic ports, and the conducted emissions and conducted immunity tests were updated to
include this port type.
- New requirements were added to address Fault Managed Power Systems (FMPS).
- A new Appendix F "DC-I/DC-C and IBN/CBN Discussion" was added to provide tutorial information on DC-C and DC-I equipment, and CBN
and IBN topologies.
- New requirements added to Issue 8 begin at absolute number .
R-1089, Issue 8, is a companion document to GR-63, Issue 5, NEBS Requirements: Physical Protection.
Issue 8 of GR-1089 replaces Issue 7 and is a module of FD-NEBS-01.
When using GR-1089, you may want to refer to these other related NEBS equipment protection requirements documents: GR-63,
SR-3580, GR-78, GR-357, GR-487, GR-2930, GR-3108, GR-3171, GR-3160, and various standards and industry
Components of this product are: