Sec.  36.123   Operator systems equipment—Category 1.

   (a) Operator systems equipment is contained in Account 2220. It includes all
   types of manual telephone switchboards except tandem switchboards and those
   used solely for recording of calling telephone numbers in connection with
   customer dialed charge traffic. It includes all face equipment, terminating
   relay circuits of trunk and toll line circuits, cord circuits, cable turning
   sections, subscriber line equipment, associated toll connecting trunk
   equipment, number checking facilities, ticket distributing systems,
   calculagraphs, chief operator and other desks, operator chairs, and other
   such equipment.

   (1) Operator systems equipment is generally classified according to
   operating arrangements of which the following are typical:

   (i) Separate toll boards

   (ii) Separate local manual boards

   (iii) Combined local manual and toll boards

   (iv) Combined toll and DSA boards

   (v) Separate DSA and DSB boards

   (vi) Service observing boards

   (vii) Auxiliary service boards

   (viii) Traffic service positions

   (2) If switchboards as set forth in  Sec. 36.123(a) are of the key pulsing type,
   the cost of the key pulsing senders, link and trunk finder equipment is
   included with the switchboards.

   (3) DSB boards include the associated DSB dial equipment, such as link and
   sender equipment.

   (4) Traffic service position systems include the common control and trunk
   equipment in addition to the associated groups of positions wherever
   located.

   (5) Effective July 1, 2001, through June 30, 2006, study areas subject to
   price cap regulation, pursuant to  Sec. 61.41 of this chapter, shall assign the
   average balance of Account 2220, Operator Systems, to the
   categories/subcategories, as specified in  Sec. 36.123(a)(1), based on the
   relative percentage assignment of the average balance of Account 2220 to
   these categories/subcategories during the twelve month period ending
   December 31, 2000.

   (6) Effective July 1, 2001 through June 30, 2006, all study areas shall
   apportion the costs assigned to the categories/subcategories, as specified
   in  Sec. 36.123(a)(1), among the jurisdictions using the relative use
   measurements for the twelve month period ending December 31, 2000 for each
   of the categories/subcategories specified in  Sec.  Sec. 36.123 (b) through 36.123(e).

   (b) The cost of the following operator systems equipment is apportioned
   among the operations on the basis of the relative number of weighted
   standard work seconds handled at the switchboards under consideration.

   (1) The following types of switchboards at toll centers are generally
   apportioned individually:

   (i) Separate toll boards. These usually include outward, through and inward
   positions in separate lines and associated inward toll switchboard positions
   in line.

   (ii) Switchboards handling both local and toll, either combined or having
   segregated local and toll positions in the same line.

   (iii) Switchboards handling both toll and DSA, either combined or having
   segregated toll and DSA positions in the same line.

   (iv) Traffic service positions, including separately located groups of these
   positions when associated with a common basic control unit.

   (2) The following types of switchboards at toll centers are apportioned
   individually, or by groups of comparable types of boards for each exchange:

   (i) Separate local manual boards. This includes the local positions of
   manual boards where inward toll positions are in the same line.

   (ii) Separate DSA boards.

   (iii) Separate DSB boards.

   (3) Tributary boards may be treated individually if warranted or they may be
   treated on a group basis.

   (c) Auxiliary service boards generally handle rate and route, information,
   and intercept service at individual or joint positions. The cost of these
   boards is apportioned as follows:

   (1) The cost of separate directory assistance boards is apportioned among
   the operations on the basis of the relative number of weighted standard work
   seconds handled at the boards under consideration. Directory assistance
   weighted standard work seconds are apportioned among the operations on the
   basis of the classification of these weighted standard work seconds as
   follows:

   (i) Directory assistance weighted standard work seconds first are classified
   between calls received over toll directory assistance trunks from operators
   or customers and all other directory assistance calls.

   (ii) The directory assistance weighted standard work seconds of each type
   further are classified separately among the operations on the basis of an
   analysis of a representative sample of directory assistance calls of each
   type with reference to the locations of the calling and called stations for
   each call.

   (2) The cost of separate intercept boards and automated intercept systems in
   the study area is appportioned among the operations on the basis of the
   relative number of subscriber line minutes of use.

   (3) The cost of separate rate and route boards is generally included with
   the cost of the toll boards served and is apportioned with those boards.

   (4) Where more than one auxiliary service is handled at an auxiliary board,
   the cost of the board is apportioned among the auxiliary services on the
   basis of the relative number of weighted standard work seconds for each
   service. The cost of that part of the board allocated to each auxiliary
   service is apportioned among the operations in the same manner as for a
   separate auxiliary board.

   (d) The cost of joint exchange and toll service observing boards is first
   apportioned between exchange and toll use on the basis of the relative
   number of exchange and toll service observing units at these boards. The
   cost of separate toll service observing boards and the toll portion of joint
   service observing boards is apportioned between state and interstate
   operations on the basis of the relative number of toll minutes of use
   associated with the toll messages originating in the offices observed.

   (e) Traffic Service Position System (TSPS) investments are apportioned as
   follows:

   (1) Operator position investments are apportioned on the basis of the
   relative weighted standard work seconds for the entire TSPS complex.

   (2) Remote trunk arrangement (RTA) investments are apportioned on the basis
   of the relative processor real time (i.e., actual seconds) required to
   process TSPS traffic originating from the end offices served by each RTA.

   (3) The remaining investments at the central control location, such as the
   stored program control and memory, is apportioned on the basis of the
   relative processor real time (i.e., actual seconds) for the entire TSPS
   complex.

   [ 52 FR 17229 , May 6, 1987, as amended at  66 FR 33205 , June 21, 2001]