§  90.548   Interoperability Technical Standards.

   (a) Transmitters designed after August 11, 2014 to operate on the
   narrowband interoperability achannels in the 769-775 and 799-805 MHz
   band (see § 90.531) shall conform to the following technical standards
   (transmitters certified prior to this date are grandfathered):

   (1) Transmitters designed for voice operation shall include a 12.5
   kilohertz bandwidth mode of operation conforming to the following
   standards: ANSI/TIA-102.BAAA-A-2003 and ANSI/TIA-102.BABA-2003.

   (2) Transmitters designed for data transmission shall include a 12.5
   kilohertz bandwidth mode of operation conforming to the following
   standards: ANSI/TIA-102.BAEA-B-2012, ANSI/TIA-102.BAAA-A-2003,
   ANSI/TIA-102.BAEB-A-2005, and ANSI/TIA-102.BAEE-B-2010.

   (b) The Director of the Federal Register approves these incorporations
   by reference in accordance with 5 U.S.C. 552(a) and 1 CFR part 51.
   Material incorporated by reference may be inspected at the Federal
   Communications Commission's Reference Information Center, located at
   the address of the FCC's main office indicated in 47 CFR 0.401(a), Tel:
   (202) 418-0270, or at the National Archives and Records Administration
   (NARA). For information on the availability of this material at NARA,
   call 202-741-6030, or go to:
   http://www.archives.gov/federal__register/code__of__federal__regulation
   s/ibr__locations.html.

   (1) TIA/EIA, 2500 Wilson Boulevard, Arlington, VA 22201 703-907-7974.
   These standards are also available from Global Engineering Documents,
   15 Inverness Way East, Englewood, CO 80112; or the American National
   Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY
   10036, www.ansi.org.

   (i) ANSI/TIA-102.BAAA-A-2003, Project 25 FDMA-Common Air Interface,
   approved September 2003.

   (ii) ANSI/TIA-102.BABA-2003, Project 25 Vocoder Description, approved
   December 2003.

   (iii) ANSI/TIA-102.BAEA-B-2012, Project 25 Data Overview—New Technology
   Standards Project—Digital Radio Technical Standards, approved June
   2012.

   (iv) ANSI/TIA-102.BAEB-A-2005, Project 25 Packet Data Specification—New
   Technology Standards Project—Digital Radio Technical Standards,
   approved March 2005.

   (v) ANSI/TIA-102.BAEE-B-2010, Project 25 Radio Management Protocols—New
   Technology Standards Project—Digital Radio Technical Standards,
   approved May 2010.

   (2) [Reserved]

   (c) Transceivers capable of operating on the narrowband
   Interoperability channels listed in § 90.531(b)(1) shall not be marketed
   or sold unless the transceiver has previously been certified for
   interoperability by the Compliance Assessment Program (CAP)
   administered by the U.S. Department of Homeland Security; provided,
   however, that this requirement is suspended if the CAP is discontinued.
   Submission of a 700 MHz narrowband radio for certification will
   constitute a representation by the manufacturer that the radio will be
   shown, by testing, to be interoperable across vendors before it is
   marketed or sold. In the alternative, manufacturers may employ their
   own protocol for verifying compliance with Project 25 standards and
   determining that their product is interoperable among vendors. In the
   event that field experience reveals that a transceiver is not
   interoperable, the Commission may require the manufacturer thereof to
   provide evidence of compliance with this section.

   (d) Transceivers capable of conventional operations on the narrowband
   Interoperability channels listed in § 90.531(b)(1) must, at a minimum,
   include the following feature sets and capabilities while operating in
   the conventional mode to be validated for compliance with the Project
   25 standards consistent with § 2.1033(c)(20) of this chapter and
   paragraph (c) of this section.

   (1) A subscriber unit must be capable of issuing group calls in a
   conventional system in conformance with the following standards: TIA
   102.BAAD-B Conventional Procedures (2015), Section 6.1 with validation
   testing according to TIA-102.CABA Interoperability Testing for Voice
   Operation in Conventional Systems (2010), Test Case 2.2.2.4.1, and Test
   Case 2.4.2.4.1.

   (2) Two Project 25 standard squelch modes, Monitor Squelch and Normal
   Squelch, must be supported in conformance with the following standards:
   TIA 102.BAAD-B Conventional Procedures (2015), Section 6.1.1.3 with
   validation testing according to TIA-102.CABA Conventional
   Interoperability Testing for Voice Operation in Conventional Systems
   (2010), Test Case 2.2.3.4.1, Test Case 2.2.1.4.1 (Direct, normal
   squelch), Test Case 2.4.9.4.1 (Repeated, monitor squelch), and Test
   Case 2.4.1.4.1 (Repeated, normal squelch).

   (3) A subscriber unit must properly implement conventional network
   access codes values (NAC) of $293 and $F7E in conformance with the
   following standards: TIA-102.BAAC-C Common Air Interface Reserved
   Values (2011), Section 2.1 with validation testing according to
   TIA-102.CABA Interoperability Testing for Voice Operation in
   Conventional Systems (2010), Test Case 2.2.1.4.1 and Test Case
   2.2.8.4.1.

   (4) A fixed conventional repeater must be able to repeat the
   correct/matching network access code (NAC) for all subscriber call
   types (clear and encrypted) using the same output NAC in conformance
   with the following standards: TIA 102.BAAD-B Conventional Procedures
   (2015), Section 2.5 with validation testing according to TIA-102.CABA
   Interoperability Testing for Voice Operation in Conventional Systems
   (2010), Test Case 2.4.1.4.1, and Test Case 2.4.2.4.1.

   (5) A fixed conventional repeater must be able to repeat the
   correct/matching network access code (NAC) for all subscriber call
   types (clear and encrypted) using a different output NAC in conformance
   with the following standards: TIA 102.BAAD-B Conventional Procedures
   (2015), Section 2.5 with validation testing according to TIA-102.CABA
   Interoperability Testing for Voice Operation in Conventional Systems
   (2010), Test Case 2.4.3.4.1 and Test Case 2.4.4.4.1.

   (6) A fixed conventional repeater must be able to reject (no repeat)
   all input transmissions with incorrect network access code (NAC) in
   conformance with the following standard: TIA 102.BAAD-B Conventional
   Procedures (2015), Section 2.5 with validation testing according to
   TIA-102.CABA Interoperability Testing for Voice Operation in
   Conventional Systems (2010), Test Case 2.4.1.4.1, and Test Case
   2.4.2.4.1.

   (7) A fixed conventional repeater must be able to support the correct
   implementation of network access code (NAC) values $F7E and $F7F in
   conformance with the following standards: TIA 102.BAAD-B Conventional
   Procedures (2015), Section 2.5 with validation testing according to
   TIA-102.CABA Interoperability Testing for Voice Operation in
   Conventional Systems (2010), Test Case 2.4.5.4.1, Test Case 2.4.6.4.1,
   and Test Case 2.4.7.4.1.

   [ 79 FR 39340 , July 10, 2014, as amended at  79 FR 71326 , Dec. 2, 2014;
    83 FR 30367 , June 28, 2018;  85 FR 64410 , Oct. 13, 2020]