VERIZON WIRELESS
DATA SOURCE AND NUMBER INVENTORY SYSTEMS
Verizon Wireless merged GTE Mobilenet and Airtouch into its operations. Verizon Wireless plans to convert these carriers' billing systems into its own billing system, but no definite schedule has been established. Currently, Verizon Wireless uses PRISM as its primary billing system for all TNs. PRISM allows complete access to the billing history for all TNs. Verizon Wireless used summarized data from its PRISM system in preparing the December 2000 NRUF Report and provided staff with this data. Verizon Wireless is scheduled to implement its Enterprise Telephone Number Inventory (ETNI) system by October 18, 2001.38 ETNI is a companywide TN inventory tracking mechanism with auditable functions. In the future, Verizon Wireless will use ETNI to create its NRUF reports.
AUDIT METHODOLOGY
Staff used random sampling to test the accuracy of the utilization data Verizon Wireless submitted for its December 2000 NRUF Report. Staff selected a balanced population of TNs from the NRUF report data that covered the greatest variety of TNs within the smallest sample. The sample included a high percentage of exceptions from the observed "normal" type block, although these exceptional blocks also contained the remaining "standard" portions of said blocks. Staff sampled portions of 16 different prefixes and approximately 9,000 TNs. A variety of factors determined the methodology for their review. Staff examined several of the prefixes in their entirety, and differing portions, such as 75%, 50%, and 25%, of other prefixes. Sampling also included the verification of selected prefixes with unusual characteristics when compared with all blocks in the December 2000 NRUF Report. Staff audit adjustments were based on a projection of the errors found in the sample population.
A-2 DELINQUENT INTERMEDIATE CARRIERS
The following carriers reported incomplete NRUF data.
1. Action Paging
2. Airtouch Paging
3. Answer America
4. California Wireless
5. Cook Telecom Inc.
6. Digitcom
7. Global Communications, Inc.
8. JPS C/O Earthlink
9. Metrocall-Los Angeles
10. Navipath
11. Network Services LLC
12. One Stop Cell & Paging
13. Pagemart
14. PAGEPROMPT
15. Paging Network
16. Paging Dimensions, Inc.
17. Qwest Communications
18. Satellite Paging Inc.
19. Shelcom
20. TSR Wireless LLC
A-3 HISTORICAL RECORDS CARRIERS SHOULD RETAIN TO VALIDATE NRUF REPORTING
Carriers should retain for five years all essential source documentation used to prepare the NRUF Report. This documentation should be retained in electronic form when possible, to facilitate researching individual TN data and classification. At a minimum this documentation should include:
1. Historical switch data showing the status of individual TNs, which was used for NRUF reporting;
2. A written description of TN inventory systems, NRUF reporting processes, and forecasting processes;
3. Worksheets or documents relating to the compilation of the NRUF reports, with references back to source documents;
4. Billing and/or other records verifying customer activation and disconnection, by TN;
5. Records verifying the length of time a TN is in aging;
6. Customer service requests or other records documenting that a customer reserved a TN. The records must show the customer's name, original date of reservation, termination date of reservation, etc., for verification;
7. A list of all Administrative TNs and their usage such as high-volume calling, soft dial tone, testing, etc., and records verifying that Administrative TNs are used for a specific administrative or operational function;
8. For Intermediate numbers, carriers receiving TNs from code or block holders should maintain records identifying the names of the carriers that provided the TNs, and the ranges of TNs received;
9. For Intermediate numbers, carriers providing TNs to carriers and non-carrier entities should maintain records identifying the names of the receiving entities, and the ranges of numbers allocated to these carriers and non-carriers;
10. A list of all prefixes and thousand-blocks received or donated between the NRUF reporting dates; and
11. Written documentation of the carrier's policies and procedures relating to number resource management and NRUF reporting, and copies of any internal audits, reviews or investigations relating to number resource management.
