Goto Section: 4.3 | 4.7 | Table of Contents
Revised as of October 2, 2015
Goto Year:2014 |
§ 4.5 Definitions of outage, special offices and facilities, and 911 special
(a) Outage is defined as a significant degradation in the ability of an end
user to establish and maintain a channel of communications as a result of
failure or degradation in the performance of a communications provider's
(b) Special offices and facilities are defined as major military
installations, key government facilities, nuclear power plants, and those
airports that are listed as current primary (PR), commercial service (CM),
and reliever (RL) airports in the FAA's National Plan of Integrated Airports
Systems (NPIAS) (as issued at least one calendar year prior to the outage).
The member agencies of the National Communications System (NCS) will
determine which of their locations are “major military installations” and
“key government facilities.” 911 special facilities are addressed separately
in paragraph (e) of this section.
(c) All outages that potentially affect communications for at least 30
minutes with any airport that qualifies as a “special office and facility”
pursuant to the preceding paragraph shall be reported in accordance with the
provisions of § § 4.11 and 4.13.
(d) A mission-affecting outage is defined as an outage that is deemed
critical to national security/emergency preparedness (NS/EP) operations of
the affected facility by the National Communications System member agency
operating the affected facility.
(e) An outage that potentially affects a 911 special facility occurs
(1) There is a loss of communications to PSAP(s) potentially affecting at
least 900,000 user-minutes and: The failure is neither at the PSAP(s) nor on
the premises of the PSAP(s); no reroute for all end users was available; and
the outage lasts 30 minutes or more; or
(2) There is a loss of 911 call processing capabilities in one or more E-911
tandems/selective routers for at least 30 minutes duration; or
(3) One or more end-office or MSC switches or host/remote clusters is
isolated from 911 service for at least 30 minutes and potentially affects at
least 900,000 user-minutes; or
(4) There is a loss of ANI/ALI (associated name and location information)
and/or a failure of location determination equipment, including Phase II
equipment, for at least 30 minutes and potentially affecting at least
900,000 user-minutes (provided that the ANI/ALI or location determination
equipment was then currently deployed and in use, and the failure is neither
at the PSAP(s) or on the premises of the PSAP(s)).
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Goto Section: 4.3 | 4.7
Goto Year: 2014 |
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