Goto Section: 22.971 | 22.973 | Table of Contents
FCC 22.972
Revised as of October 1, 2011
Goto Year:2010 |
2012
§ 22.972 Interference resolution procedures.
(a) Initial notification . (1) Cellular Radiotelephone licensees may
receive initial notification of interference from non-cellular part 90
of this chapter licensees in the 800 MHz band pursuant to § 90.674(a)
of this chapter.
(2) Cellular Radiotelephone licensees, in conjunction with part 90 ESMR
licensees, shall establish an electronic means of receiving the initial
notification described in § 90.674(a) of this chapter. The electronic
system must be designed so that all appropriate Cellular Radiotelephone
licensees and part 90 ESMR licensees can be contacted about the
interference incident with a single notification. The electronic system
for receipt of initial notification of interference complaints must be
operating no later than February 22, 2005.
(3) Cellular Radiotelephone licensees must respond to the initial
notification described in § 90.674(a) of this chapter, as soon as
possible and no later than 24 hours after receipt of notification from
a part 90 public safety/CII licensee. This response time may be
extended to 48 hours after receipt from other part 90 non-cellular
licensees provided affected communications on these systems are not
safety related.
(b) Interference analysis. Cellular Radiotelephone licensees--who
receive an initial notification described in § 90.674(a) of this
chapter--shall perform a timely analysis of the interference to
identify the possible source. Immediate on-site visits may be conducted
when necessary to complete timely analysis. Interference analysis must
be completed and corrective action initiated within 48 hours of the
initial complaint from a part 90 of this chapter public safety/CII
licensee. This response time may be extended to 96 hours after the
initial complaint from other part 90 of this chapter non-cellular
licensees provided affected communications on these systems are not
safety related. Corrective action may be delayed if the affected
licensee agrees in writing (which may be, but is not required to be,
recorded via e-mail or other electronic means) to a longer period.
(c) Mitigation steps. (1) All Cellular Radiotelephone and part 90 of
this chapter--800 MHz cellular system licensees who are responsible for
causing unacceptable interference shall take all affirmative measures
to resolve such interference. Cellular Radiotelephone licensees found
to contribute to unacceptable interference, as defined in § 22.970,
shall resolve such interference in the shortest time practicable.
Cellular Radiotelephone licensees and part 90 of this chapter--800 MHz
cellular system licensees must provide all necessary test apparatus and
technical personnel skilled in the operation of such equipment as may
be necessary to determine the most appropriate means of timely
eliminating the interference. However, the means whereby interference
is abated or the cell parameters that may need to be adjusted is left
to the discretion of the Cellular Radiotelephone and/or part 90 of this
chapter--800 MHz cellular system licensees, whose affirmative measures
may include, but not be limited to, the following techniques:
(i) Increasing the desired power of the public safety/CII signal;
(ii) Decreasing the power of the part 90 ESMR and/or Cellular
Radiotelephone system signal;
(iii) Modifying the part 90 ESMR and/or Cellular Radiotelephone system
antenna height;
(iv) Modifying the part 90 ESMR and/or Cellular Radiotelephone system
antenna characteristics;
(v) Incorporating filters into part 90 ESMR and/or Cellular
Radiotelephone transmission equipment;
(vi) Permanently changing part 90 ESMR and/or Cellular Radiotelephone
frequencies; and
(vii) Supplying interference-resistant receivers to the affected public
safety/CII licensee(s). If this technique is used, in all
circumstances, Cellular Radiotelephone and/or part 90 of this chapter
ESMR licensees shall be responsible for all costs thereof.
(2) Whenever short-term interference abatement measures prove
inadequate, the affected part 90 of this chapter non-cellular licensee
shall, consistent with but not compromising safety, make all necessary
concessions to accepting interference until a longer-term remedy can be
implemented.
(3) Discontinuing operations when clear imminent danger exists. When a
part 90 of this chapter public safety licensee determines that a
continuing presence of interference constitutes a clear and imminent
danger to life or property, the licensee causing the interference must
discontinue the associated operation immediately, until a remedy can be
identified and applied. The determination that a continuing presence
exists that constitutes a clear and imminent danger to life or
property, must be made by written statement that:
(i) Is in the form of a declaration, notarized affidavit, or statement
under penalty or perjury, from an officer or executive of the affected
public safety licensee;
(ii) Thoroughly describes the basis of the claim of clear and imminent
danger;
(iii) Was formulated on the basis of either personal knowledge or
belief after due diligence;
(iv) Is not proffered by a contractor or other third party; and
(v) Has been approved by the Chief of the Public Safety and Homeland
Security Bureau or other designated Commission official. Prior to the
authorized official making a determination that a clear and imminent
danger exists, the associated written statement must be served by
hand-delivery or receipted fax on the applicable offending licensee,
with a copy transmitted by the fastest available means to the
Washington, DC office of the Commission's Public Safety and Homeland
Security Bureau.
[ 69 FR 67834 , Nov. 22, 2004, as amended at 70 FR 76707 , Dec. 28, 2005;
71 FR 69038 , Nov. 29, 2006]
Goto Section: 22.971 | 22.973
Goto Year: 2010 |
2012
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