Wireless Number Portability Subcommittee Wireless Pooling Alternative Evaluation July 20, 1999

1. Wireless Number Portability Subcommittee Wireless Pooling Alternative EvaluationJuly 20, 1999

2. NANC Action Item • DESCRIPTION • Without Phase 2 LNP, wireless service providers could donate and receive 1000 blocks from a number pool, given certain requirements.

3. Real Issue • CONCLUSION • The alternative would not be a viable method for wireless participation in Thousand Block Pooling prior to Phase 2 LNP • Implementation of this alternative could jeopardize compliance with the Phase 2 wireless LNP implementation deadline of November 24, 2002

4. Requirements and Impacts • IMPACTS • Eliminates default routing and triggerless methods for Phase 1 LNP • Results in additional Code Holder and Default Routing responsibilities • Requires modifications to wireless telephone number administration systems and procedures • NPA NXX and database services are at risk, pending testing and debugging • Requires modifications to the INC Thousand Block Pooling Administration Guidelines • Requires modifications to Thousand Block Pooling administrator responsibilities

5. Barriers to Pooling Today • LNP Functional Requirements • TIA Phase 1 standard IS 756-0 • On originating calls, MSC triggers a query to obtain the LRN for correct routing • TIA Phase 2 standard IS 756A • On terminating calls, the MSC must be able to accept and process the IAM of a dipped call, the CdPN=LRN (not the MDN)

6. Wireless Number Pooling Timeline 1999 2000 2001 2002 2Q 3Q 4Q 1Q 2Q 3Q 4Q 1Q 2Q 3Q 4Q 1Q 2Q 3Q 4Q LNP Phase 1 and Phase 2 Software NPAC Changes Internal Requirements Functional Specifications System Development Testing Testing NPAC Turn-up Intercarrier Roll Out Holiday Season Regression Testing Wireless LNP Implementation 11/24/2002