technical control center will show a complete chronological history of that
circuit, and will contain a copy of every required document pertinent to the
circuit. Subordinate signal centers are also required to maintain similarly
identified file folders on the circuit, but these folders will display only
those documents that relate to the local portions of the circuit.
(b) The right side of the folder in the responsible technical
control center will be the activation side and will contain copies of each
TSO issued on the circuit.
Filed on the top edge of the TSO will be the
status card and the DCA 310-55-1 reports pertaining to that circuit as
directed by the control office.
The circuit data card will be mounted on
the bottom half of the folder, as shown.
(c) Both the circuit data cards and the TSO's will be filed
chronologically so as to provide a clear history of the circuit. The left
side of the folder is the circuit history side and contains copies of
the Circuit Parameter Test Report.
(d) If DCA designates an alternate coordinating center, duplicate
records must be maintained in both the primary and alternate centers. The
file on the circuit in each subordinate center will contain those documents
directed by DCA, as well as documents distributed to subordinate centers by
the coordinating center. In other words, the coordinating center designated
by DCA will have a complete file on the circuit, while each subordinate
center will have a partial file on it, with all related files being
similarly color keyed.
(2) Equipment utilization records. These records reflect the status
of each item of circuit conditioning equipment used by the technical control
center in which the records are kept.
Equipment utilization records are
maintained in a hard-bound record book and reflect utilization by sequence
A sample blank page in the record book is shown in figure 3-2,
which applies to ringdown converters. A separate form is kept for each item
of equipment. Note that this form establishes responsibility for each item
installed in the circuit.
Information from this report aids the circuit
conditioner to identify the function of each installed item in the racks
containing circuit conditioning equipment, and relates each item to the CCSD
number. For purpose of this report, circuit conditioning equipment includes
SF units, ringdown converts, pads, amplifiers, equalizers, hybrids, 2- and
4-wire jacks, and dial extenders.