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 Fromthe 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.