Glossary

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There are currently 11 terms in this directory beginning with the letter G.
Generic Requirements Documents
Documents developed by Bellcore/Telcordia that specified the design, operation, and purpose of telecom networks, equipment, and components. They were originally intended to help the Regional Bell Companies that resulted from the Bell System breakup in 1983
GR's

Gigahertz
A frequency unit equivalent to one billion Hertz. Many microwave signals are in this frequency range.
GHz

GR-1209-CORE
for Fiber Optic Branching Components
GR-1209-CORE

GR-1221-CORE
for Passive Optical Components
GR-1221-CORE

GR-326-CORE
for Single Mode Optical Connectors and Jumper Assemblies (Fiber Optics)
GR-326-CORE

GR-468-CORE
for Optoelectronic Devices Used in Telecommunications Equipment
GR-468-CORE

GR-487-CORE
for Electronic Equipment Cabinets (Enclosures)
GR-487-CORE

GR-49-CORE
for Outdoor Telephone Network Interface Devices
GR-49-CORE

GR-63-CORE
for Network Equipment-Building System Requirements (NEBS): Physical Protection
GR-63-CORE

GR-974-CORE
for Telecommunications Line Protector Units (TLPUS)
GR-974-CORE

Grey Transceiver
A standard optical transceiver that cannot tune its frequency channel. It's called grey because unlike tunable transceivers, it cannot change its "color".