1. NANC Number Conservation Ad Hoc Charge (per 2/21 NANC) Should an IMG be commissioned? If yes, Scope of assignment Time & Budget

2. Ad Hoc Call Participants-March 12, 2001 Ed Gould, Penn Pfautz, Mark Lancaster - AT&T Phil McClelland - Office of Consumer Advocate Pennsylvania Barbara Meisenheimer - Missouri Office of Public Counsel Dan Kearney - Michigan Public Service Commission Trent Boaldin - OPASTCO Jim Goldstein - Nextel Brenda Stevens - CRTCT Brian Baldwin - Telcordia Greg Pattenaude - NY PSC Beth O'Donnell - NCTA Peter Guggina, Karen Mulberry, Steve Engelman - WorldCom Keith McIntosh -Canadian Wireless Telecommunications Association Beth Kistner ALTS Norm Epstein - Verizon Bill Adair - SBC Cathie Capita - Voicestream Wendy Potts - Bell Canada Eleanor Willis-Camara - Winstar Switzon Wigfall - North Carolina Utilities Commission Larry Krevor - Nextel Natalie Billingsley - NASUCA Nancy Brockway New Hampshire PUC Rose Travers - USTA Hoke Knox - Sprint Dawn Lawrence - XO Communications

3. Suggested Goal of Work Determine Lifetime of NANP considering use of optimization techniques. Determine costs of implementation of prioritized techniques. Selection of best Number Plan Expansion technique. Determine costs of implementation. Comparison of Above to assess best direction.

4. Ad Hoc Meeting Results March 12, 2001 Group considered the charge Agreed to the need for additional NANP optimization activities and Number Plan expansion studies Many favored a new IMG to better tie together the final goal, many didnt have a preference versus assignment of Number Optimization work to NRO.

5. Proposal Charter New IMG with two major activities: –Evaluate Number Optimization techniques Use List from February NANC meeting –Evaluate NANP expansion –Compare and Develop Direction Focus first on analysis of optimization options Follow with review of the INC NANP expansion report adding additional information, such as cost analysis Maybe some time period with overlap of work

6. Proposed Approach for Optimization Develop model(s) that will address what drives Number Plan exhaust Develop Baseline Number Plan Exhaust Date Identify impacts of Additional beneficial methods Determine preferred alternatives Evaluate costs

7. Optimization Data Analysis Develop a set of analyses to be performed on NRUF data to –Understand utilization/consumption at each resource level (NPAs, CO Codes, TNs) –Estimate the effect of each conservation alternative (start with February NANC list)

8. Number Optimization Timeline and Costs Two months to develop initial analyses Two month iteration with data Two months for final analysis Need NANPA to perform analysis on disaggregated data. Could be NANPA costs for data analysis.

9. NANP Expansion Evaluation Review INC assumptions, conclusions Consider Network and End User costs Assess Expansion in relation to Number Optimization options Begin work after INC report is available No identifiable costs but could have if Consultants required for End User cost determination. Timeline not identified but likely 6 months after INC completion