1/Introduction and Overview -- I. Background -- II. Recent Methodological Developments -- III. Conferences and Special Volumes -- IV. Plan of Book -- 2/The Theory of Telephone Demand I: Basic Results -- I. Some Basic Considerations -- II. Recent Contributions to the Theory of Telephone Demand -- III. Consumption Externalities and Communities of Interest -- IV A Framework for Analyzing Telephone Demand -- V. Relationships Between Price and Income Elasticities for Access and Usage -- VI. Option Demand -- 3/The Theory of Telephone Demand II: Extensions of Basic Results -- I. The Duration and Distance Dimensions of Telephone Demand -- II. Time-of-Day Pricing -- III. Operator-Handled Versus Direct-Dialed Calls -- IV. Some Further Dynamics -- V. The Usage of Price Deflated Revenues -- VI. Firm vs Market Elasticities -- VII. Logistic Approaches to Forecasting -- VIII. Concluding Comments -- 4/Business Telecommunications Demand -- I. Some Basic Considerations -- II. A General Model of Business Demand -- III. Some Specific Models of Business Demand -- IV. Business Demand From the Point of View of the Local Exchange Company -- V. Wrap-up and Summary -- 5/Recent Studies of Residential Access Demand -- I. The 1983 Perl Study -- II. Southwestern Bell's Residential Access Demand Model: Taylor and Kridel (1990) -- III. Bell Canada's Residential Access Demand Model -- IV Train, McFadden, and Ben-Akiva (1987) -- V. Evaluation -- 6/Recent Studies of Toll Demand -- I. Toll Demand in Ontario and Quebec -- II. Point-to-Point Toll Demand -- III. The Demand for Interstate Access Minutes -- IV. The Demand for Bypass of the LEC -- V. Wrap-up -- 7/The Demand for Local Calls and Related Local Services -- I. Local Calling and the Choice Between Flat-Rate and Measured Service -- II. Bypass Via EAS: Kridel (1988) -- III. Results From the GTE Measured-Service Experiment: Park, Wetzel, & Mitchell (1983) -- IV. The Demand for Custom-Calling Features -- 8/Business Telephone System Demand -- I. Total-Bill and Socio-Demographic Effects -- II. Business Telephone System Demand -- III. Total-Bill Effects -- IV. Socio-Demographic and Other Characteristics of Telecommunications Demand -- 9/Consumption Externalities -- I. The Network Externality and the Optimal Pricing of Telecommunications Services -- II. An Alternative Measure of the Network Externality -- III. Distributional Equity -- IV. Some Remaining Questions -- V Call Externalities -- VI. Empirical Evidence Regarding Consumption Externalities -- VII. Conclusions -- 10/Price Elasticities in the Hearing Room: The Promise and Limits of Econometric Analyses of Telecommunications Demand -- I. The Structure of an Econometric Study -- II. Econometrics in the Hearing Room: Some Guiding Precepts -- III. Some Pitfalls in Using Econometric Models -- 11/Evaluation and Conclusions -- I. What We Appear to Know About the Structure of Telecommunications Demand -- II. Problem Areas -- III. Demand Analysis in a Competitive/Partially Regulated Environment -- Appendix 1/The Pre-1980 Empirical Literature on Telephone Demand: Access, Local Service, and Interstate Toll -- I. The Demand for Access -- II. The Demand for Local Use -- III. Long-Haul (Interstate) Toll Demand -- Appendix 2/The Pre-1980 Empirical Literature on Telephone Demand: Intrastate Toll, WATS and Private Line, Coin, Etc. -- I. Intrastate Toll Demand -- II. WATS and Private Line -- III. Coin Stations -- IV. Vertical Services -- V. The Impact of Service-Connection and Other Nonrecurring Charges -- VI. International Demand -- VII. Yellow-Pages Advertising -- VIII. Noneconometric Approaches to Forecasting Telephone Demand -- Appendix 3/Network Externality and the Demand for Residential Long-Distance Telephone Service: A Comment -- I. A Model of Toll Demand -- II. Isolation of the Network Externality -- III. Conclusions.