ThisGenericRequirementsdocument(GR)presentsminimumspatialandenvironmentalcriteriaforallnewtelecommunicationsequipmentusedinCentralOffices(COs)andotherenvironmentallycontrolledtelecommunicationsequipmentspaces.ThesecriteriaweredevelopedjointlybyTelcordiaandindustryrepresentatives.Theyareapplicabletoswitchingandtransportsystems,associatedcabledistributionsystems,distributingandinterconnectingframes,powernequipment,operationssupportsystems,andcableentrancefacilities.Compliancewiththeserequirementsmayincreasenetworkrobustness,simplifyequipmentinstallation,andpromotetheeconomicalplanningandengineeringofequipmentspaces.Telecommunicationsequipment,bynatureofitsphysicalinstallationinabuilding,maybeexposedtoenvironmentalstresses.Thegenericcriteriapresentedinthefollowingsectionsareintendedtohelpavoidequipmentdamageandmalfunctioncausedbysuchthingsastemperatureandhumidity,vibrations,airbornecontaminants,minimizefireignitionsandfirespread,aswellasprovideforimprovedspaceplanningandsimplifiedequipmentinstallation.Thisdocumentprovidesonlythoserequirementsrelatedtothephysicalaspectsofequipment-buildinginterfaces,includingphysicaldimensionsandenvironmentalperformancecriteria.Additionaldesignrequirements,includingfunctional,electrical,andreliabilityrequirements,maybefoundinotherrequirementsdocuments.