§  90.477   Interconnected systems.

   (a) Applicants for new land stations to be interconnected with the
   public switched telephone network must indicate on their applications
   (class of station code) that their stations will be interconnected.
   Licensees of land stations that are not interconnected may interconnect
   their stations with the public switched telephone network only after
   modifying their license. See §  1.929 of this chapter. In all cases a
   detailed description of how interconnection is accomplished must be
   maintained by licensees as part of their station records. See §  90.433
   of this part.

   (b) In the frequency ranges 806-824 MHz, 851-869 MHz, 896-901 MHz, and
   935-940 MHz, interconnection with the public switched telephone network
   is authorized under the following conditions:

   (1) Interconnected operation is on a secondary basis to dispatch
   operation. This restriction will not apply to trunked systems or on any
   channel assigned exclusively to one licensee.

   (2) Interconnection may be accomplished at any location through a
   separate or shared interconnection device. When land stations subject
   to this part are multiple licensed or shared by authorized users,
   arrangements for telephone service must be made with a duly authorized
   carrier by users, licensees, or their authorized agents on a non-profit
   cost sharing basis. When telephone service costs are shared, at least
   one licensee participating in the cost sharing arrangement must
   maintain cost sharing records and the costs must be distributed at
   least once a year. Licensees, users, or their authorized agents may
   also make joint use arrangements with a duly authorized carrier and
   arrange that each licensee or user pay the carrier directly for the
   licensee's or user's share of the joint use of the shared telephone
   service. A report of the cost distribution must be placed in the
   licensee's station records and made available to participants in the
   sharing and the Commission upon request. In all cases, arrangements
   with the duly authorized carrier must disclose the number of licensees
   and users and the nature of the use.

   (c) Interconnection of facilities in the Radiolocation Service (subpart
   F) will not be permitted.

   (d) In the frequency ranges below 800 MHz, interconnection with the
   public switched telephone network is authorized under the following
   conditions:

   (1) Interconnected operation is on a secondary basis to dispatch
   operation. This restriction will not apply to trunked systems or on any
   channel assigned exclusively to one licensee.

   (2) Interconnection may be accomplished at any location through a
   separate or shared interconnection device. When land stations subject
   to this part are multiple licensed or shared by authorized users,
   arrangements for telephone service must be made with a duly authorized
   carrier by users, licensees, or their authorized agents on a non-profit
   cost sharing basis. When telephone service costs are shared, at least
   one licensee participating in the cost sharing arrangement must
   maintain cost sharing records and the costs must be distributed at
   least once a year. Licensees, users, or their authorized agents may
   also make joint use arrangements with a duly authorized carrier and
   arrange that each licensee or user pay the carrier directly for the
   licensee's or user's share of the joint use of the shared telephone
   service. A report of the cost distribution must be placed in the
   licensee's station records and made available to participants in the
   sharing and the Commission upon request. In all cases, arrangements
   with the duly authorized carrier must disclose the number of licensees
   and users and the nature of the use.

   (3) For licensees in the Industrial/Business Pool and those licensees
   who establish eligibility pursuant to §  90.20(a)(2) of this part,
   except for § §  90.20(a)(2)(i) and 90.20(a)(2)(ii) of this part and
   medical emergency systems in the 450-470 MHz band, interconnection will
   be permitted only where the base station site or sites proposed
   stations are located 120 km (75 mi.) or more from the designated
   centers of the urbanized areas listed below. If these licensees seek to
   connect within 120 km (75 mi.) of the 25 cities, they must obtain the
   consent of all co-channel licensees located both within 120 km (75 mi.)
   of the center of the city; and within 120 km (75 mi.) of the
   interconnected base station transmitter. The consensual agreements
   among the co-channel licensees must specifically state the terms agreed
   upon and a statement must be submitted to the Commission indicating
   that all co-channel licensees have consented to the use of
   interconnection. If a licensee has agreed to the use of interconnection
   on the channel, but later decides against the use of interconnection,
   the licensee may request that the co-channel licensees reconsider the
   use of interconnection. If the licensee is unable to reach an agreement
   with co-channel licensees, the licensee may request that the Commission
   consider the matter and assign it to another channel. If a new licensee
   is assigned to a frequency where all the co-channel licensees have
   agreed to the use of interconnection and the new licensee does not
   agree, the new licensee may request that the co-channel licensees
   reconsider the use of interconnection. If the new licensee cannot reach
   an agreement with co-channel licensees it may request that the
   Commission reassign it to another channel.

   Note: Coordinates are referenced to North American Datum 1983 (NAD83).
   Urban area North
   latitude West
   longitude
   New York, New York-Northeastern New Jersey 40DEG45'06.4''
   73DEG59'37.5''
   Los Angeles-Long Beach, California 34DEG03'15.0'' 118DEG14'31.3''
   Chicago, Illinois-Northwestern Indiana 41DEG52'28.1'' 87DEG38'22.2''
   Philadelphia, Pennsylvania/New Jersey 39DEG56'58.4'' 75DEG09'19.6''
   Detroit, Michigan 42DEG19'48.1'' 83DEG02'56.7''
   San Francisco-Oakland, California 37DEG46'38.7'' 122DEG24'43.9''
   Boston, Massachusetts 42DEG21'24.4'' 71DEG03'23.2''
   Washington, DC/Maryland/Virginia 38DEG53'51.4'' 77DEG00'31.9''
   Cleveland, Ohio 41DEG29'51.2'' 81DEG41'49.5''
   St Louis, Missouri/Illinois 38DEG37'45.2'' 90DEG12'22.4''
   Pittsburgh, Pennsylvania 40DEG26'19.2'' 79DEG59'59.2''
   Minneapolis-St. Paul, Minnesota 44DEG58'56.9'' 93DEG15'43.8''
   Houston, Texas 29DEG45'26.8'' 95DEG21'37.8''
   Baltimore, Maryland 39DEG17'26.4'' 76DEG36'43.9''
   Dallas-Fort Worth, Texas 32DEG47'09.5'' 96DEG47'38.0''
   Milwaukee, Wisconsin 43DEG02'19.0'' 87DEG54'15.3''
   Seattle-Everett, Washington 47DEG36'31.4'' 122DEG20'16.5''
   Miami, Florida 25DEG46'38.4'' 80DEG11'31.2''
   San Diego, California 32DEG42'53.2'' 117DEG09'24.1''
   Atlanta, Georgia 33DEG45'10.4'' 84DEG23'36.7''
   Cincinnati, Ohio/Kentucky 39DEG06'07.2'' 84DEG30'34.8''
   Kansas City, Missouri/Kansas 39DEG04'56.0'' 94DEG35'20.8''
   Buffalo, New York 42DEG52'52.2'' 78DEG52'20.1''
   Denver, Colorado 39DEG44'58.0'' 104DEG59'23.9''
   San Jose, California 37DEG20'15.8'' 121DEG53'27.8''

   (e) Additional frequencies shall not be assigned to enable any licensee
   to employ a preferred interconnection capability.

   (f) Paging systems operating on frequencies in the bands below 800 MHz
   are not subject to the interconnection provisions of §  90.477(d)(3).

   [ 47 FR 17520 , Apr. 23, 1982, as amended at  48 FR 29518 , June 27, 1983;
    50 FR 15152 , Apr. 17, 1985;  51 FR 14998 , Apr. 22, 1986;  51 FR 37401 ,
   Oct. 22, 1986;  52 FR 15501 , Apr. 29, 1987;  52 FR 29856 , Aug. 12, 1987;
    53 FR 1025 , Jan. 15, 1988;  58 FR 44961 , Aug. 25, 1993;  61 FR 6576 , Feb.
   21, 1996;  62 FR 18934 , Apr. 17, 1997;  63 FR 68966 , Dec. 14, 1998]

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