
Equipment Physical Design Standards ATT-TP-76200, Issue 19
AT&T Services, Inc. June 2014
10. Fire Resistance
Equipment shall conform to the requirements of this section.
Minimum Fire Resistance
This part provides the minimum fire resistance requirements for equipment and apparatus
intended for installation in the network equipment facilities. All equipment shall be tested or
otherwise evaluated for compliance with the fire resistance criteria provided in this part.
Auxiliary Equipment
Full compliance of the requirements in this document do not apply to auxiliary monitoring
equipment such as oscilloscopes, personal computers, portable test equipment, etc., which
are not integral to the equipment. However, such auxiliary equipment must have either UL
listing or be ATIS-0600307 compliant.
Materials/Components
The materials and components used in the construction and interconnection of equipment
shall comply with the most current issue of ATIS-0600307. Generally, materials and
components shall be constructed of polymeric materials having an oxygen index of 28% or
greater and a fire resistance characteristic equivalent to or better than Under Writers
Laboratories (UL) standard UL 94 V-1. Cable and wire shall generally be listed for their
purpose.
Protective Barriers
Exposed nonmetallic equipment frame components such as protective covers, viewing
panels, etc. shall comply with the ancillary materials requirements of ATIS-0600307Fire
Spread.
A) All – Compliance Reviews
a. Carrier Grade Equipment application: Shall comply with the appropriate fire spread
performance criteria provided in Telcordia GR-63-CORE.
b. Non-Carrier Grade application: Equipment shall be listed by a Nationally Recognized
Testing Laboratory (NRTL).
c. OSP / Cell – Site application: Equipment for Class 2, 3 and 4 environments shall
comply with the fire resistance criteria of Telcordia GR-3108-CORE, Section 6.5.
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