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Section 1-- Background, Summary, and Conclusions
Pages 1-14

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From page 1...
... In compliance, the AT&T, after consultation with representatives of the independent telephone companies, filed the following revised tariffs: lF259 - "Wide Area Telecommunications Service"; lF260 - "Private Line Service"; lF263 - "Long Distance Message Telecommunications Service." These revised tariffs specify and define certain key limiting signal characteristics and" access arrangements" believed necessary by AT&T to protect telephone service and the telephone system, as well as those who come in contact with the system as employees or users. l The FCC allowed these proposed tariffs to go into effect and requested comments from interested parties.
From page 2...
... Effect on service when one party has carrier provided equipment and the other party has his own interconnected equipment (d) Validity of the criteria for acoustic or inductive coupling Final judgment by the FCC as to courses of action must, of course, include, in addition to the technical factors, such matters as rates, costs, legal implications, and basic economic policy.
From page 3...
... 4 Present tariff criteria together with a properly (d) authorized and: enforced program of standards development, equipment certification, and controlled installation and maintenance are an acceptable basis for achieving direct user interconnection.
From page 4...
... Organizations and individuals with knowledge of and experience in subjects of particular interest to the Panel were also contacted directly.8 Among the organizations providing data were: Communication Common Carriers Telephone Equipment Manufacturers Computer Manufacturers Terminal Equipment Manufacturers Organizations with Private Communications Networks Regulatory Agencies u.
From page 5...
... improper control signals. INCREASED EXPOSURE TO HAZARDOUS VOLTAGES CAN RESULT FROM UNCONTROLLED INTERCONNECTIONlO , Uncontrolled installation of user-owned terminal devices involving the use of 115 v AC and other hazardous voltages can introduce risks to telephone company installation and maintenance personnel.
From page 6...
... The signal powers specified in the tariffs represent reasonably optimized values for voice and data usage; The limits on the inband signal-power spectrum are specified to avoid the possibility of interference with internal network signaling. The out-of-band power limits are based upon limitations of local cable plant and requirements for minimum interference with present and expected greater-than-voice-band services.
From page 7...
... This approach would allow user ownership, installation, and maintenance of protective coupling units or complete terminal equipment. PRESENT TARIFF CRITERIA AND CARRIER-PROVIDED CONNECTING ARRANGEMENTS ARE AN ACCEPT ABLE WAY OF ASSURING NETWORK PROTECTION14 The present tariffs specify signal criteria for electrical, acoustic, and inductive coupling, and specify that the carrier provide 14S ec tions 3 and 5
From page 8...
... Desired connecting arrangements are not yet available according to some 'Users. THE ESTABLIS}IMENT OF STAND ARDS AND ENFORCED CERTIFICATION OF USER-SUPPLIED EQUIPMENT AND PERSONNEL CONSTITUTE AN ACCEPTABLE WAY OF ASSURING NETWORK PROTECTION16 It is important to note that the standards to be established cover only network-protection considerations such as personnel safety, signal levels, transmission, and network-control signaling, and do not include standards for user-equipment performance.
From page 9...
... Finally, although general standards can be written to cover interconnection with various types of central offices and loops, each individual installation will be, to some extent, customized due to varying loop characteristics and other factors. Therefore, interconnected equipment should be provided with proper adjustment features to deal with individual case-by-case variations.
From page 10...
... 18 ENFORCED CERTIFICATION PROCEDURES MUST BE TAKEN AS A WHOLE The Panel emphasizes that the development of standards and a program of certification requires a complete system of control, which will not be effective unless all elements of the system, as described in this report, are adopted. For example, the development of standards alone is inadequate.
From page 11...
... Since the standards program is an iterative process, requiring procedures for continuous reconsideration and renegotiation of specifications, it is important that an organizational mechanism be set up to gather data and evaluate the progress of the program. SELF-CERTIFICATION BY MANUFACTURERS OR USERS WILL NOT ENSURE AN ACCEPT ABLE DEGREE OF NETWORK PROTECTION21 19Section 6 2lS e ction 6 20Section 8
From page 12...
... In the absence of some control system, it is inevitable that marginal equipment will make its way to the market and that there will be usage outside of the rules .. WE FIND NO PERSUASIVE ARGU MENTS FAVORING THE EXEMPTION OF WHOLE CLASSES OF USERS The Panel endeavored to classify users, including utilities, right-of-way companies, agencies of the federal government, etc" in an effort to show that one or more classes might be permitted unrestricted interconnection without risk of impairment to the operation of the network.
From page 13...
... (b) The introduction of a certification program permitting direct interconnection should not significantly restrict carrier innovation if there is effective information exchange between carriers, suppliers, and users.
From page 14...
... and administrative levels. The carriers expressed strongly the need for more direct information exchange and a mOTe comprehensive picture of user reqUirements.


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