Quality and Reliability of Telecommunications Infrastructure

By William Lehr | Go to book overview
was divided by the total number of access lines to provide the line-minutes per access line and by the number of occurrences to provide the line-minutes per occurrence. This categorizes the normalized magnitude of the outage in two ways and provides a more realistic means to compare the impact of such outages between companies. A separate table is provided for each company showing the number of outages and outage line-minutes by cause.
Scheduled downtime over 2 min per occurrence: This item is identical to item 11, except it consists of scheduled occurrences rather than unscheduled occurrences.
Trunk groups with blocking over 3-month objective as a percentage of total trunk groups: This data item provides the percentage of trunk groups exceeding the objective for blocking for 3 consecutive months.

APPENDIX C: DATA SUMMARIZED IN THE FCC REPORT

Tables 8.1 through 8.4, included in this Appendix, summarize data received since 1985. Table 8.5 is an example of the data presented in the recent quality-of-service summary issued by the Commission. A similar presentation for the Bell operating companies, the GTE companies, the CONTEL companies, and the UNITED companies is presented in the Commission report. Data on dial- tone response filed since 1985 now appear in the ARMIS 43-06 filing. Paper copies of the customer perception survey data are still filed, but these data are not contained in the mechanized ARMIS reporting formats.

The impact of new technology is reducing the significance of some of the measurements filed since 1985. For example, the dial-tone delay measurement is becoming less useful with the increasing number of digital switches, in which service is unlikely to be affected by slowed dial-tone response.

The all-company composites shown in Tables 8.1 through 8.4 are calculated in a manner consistent with earlier reports as the unweighted average of the available data compiled for the individual Bell Holding Companies. One should note that data for 1991 and 1992 may differ from the earlier part of the series. Such discontinuity is due to changes in reporting procedures. Bell Atlantic has reported changes to its customer perception surveys, which are being reflected in post-1990 data and may have resulted in data discontinuities. Other companies, including NYNEX and Pacific Telesis, have indicated that they have made or are planning similar changes.

Tables 8.1 through 8.3 cover customer satisfaction surveys performed by the companies. Table 8.4 shows the percentage of offices providing less than a 3-sec dial-tone delay. Transmission quality data have not been included in this report as they do not cover transmission quality on the increasing number of digital transmission facilities that presently comprise over 95% of the interoffice facility

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Quality and Reliability of Telecommunications Infrastructure
Table of contents

Table of contents

  • Title Page iii
  • Contents v
  • Introduction 1
  • Endnotes 12
  • Part 1 Economic Theory of Network Quality 15
  • Chapter 1 The Quality of Complex Systems and Industry Structure 17
  • Introduction 17
  • Concluding Remarks 38
  • Endnotes 38
  • References 41
  • Chapter 2 The Political Economy of Entry Into Local Exchange Markets 43
  • Introduction 43
  • Conclusion 58
  • Acknowledgments 59
  • Endnotes 59
  • References 61
  • Chapter 3 Dynamic Effects of Regulation on Exchange Carrier Incentives 63
  • Introduction and Overview 63
  • Summary 81
  • Acknowledgments 81
  • Chapter 4 Issues in the Pricing of Broadband Telecommunications Services 83
  • Introduction 83
  • Concluding Comments 99
  • Endnotes 101
  • Part II Regulatory Practice 105
  • Chapter 5 A New Index of Telephone Service Quality: Academic and Regulatory Review 107
  • Introduction 107
  • Concluding Observations 128
  • Acknowledgments 130
  • Appendix 130
  • References 133
  • Chapter 6 Network Utilization Principles and Pricing Strategies for Network Reliability 135
  • Introduction 135
  • Conclusion 150
  • Acknowledgments 151
  • Endnotes 151
  • References 154
  • Chapter 7 Rate Regulation and the Quality of Cable Television 155
  • Introduction 155
  • Acknowledgments 176
  • Endnotes 176
  • References 181
  • Part III Empirical Trends and Evidence 185
  • Chapter 8 Quality-Of-Service Measurement and the Federal Communications Commission 187
  • Introduction and Overview 187
  • Conclusions 197
  • Appendix A: Raw Data Received by the Commission 198
  • Appendix B: Data Components Included in the FCC Report 200
  • Appendix C: Data Summarized in the FCC Report 202
  • Chapter 9 The Impact of Local Competition on Network Quality 213
  • Introduction 213
  • Summary 222
  • Endnotes 223
  • Chapter 10 Gigabits, Gateways, and Gatekeepers: Reliability, Technology, and Policy 225
  • Introduction 225
  • Acknowledgments 236
  • Endnotes 236
  • About the Authors 239
  • Author Index 243
  • Subject Index 247
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