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SBC Ex Parte FCC NRO Report

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					Rationale for the Elimination of NANP
    Expansion Options by the INC

          September 24, 2002
               Norman Epstein
                  Verizon
INC Evaluation/Selection Process


•   Identify best candidate expansion plans

•   Uniform Process – all plans treated equally

•   Required to meet Assumptions and Constraints

•   Objective and Subjective evaluation per Assessment
    Criteria

•   Must be implementable e.g. dialing plan, transition
    plan, etc.
Elimination of NANP Expansion Options 2A, 3A,
      4A, and the Steering Code Proposal


• OPTION 2A - 4 DIGIT NPA WITH NEW A DIGIT
   – (N)XXX + XXX + XXXX
• OPTION 3A - NATIONAL DESTINATION CODE (NDC)
   – NDC (1 Digit) + NPA + XXX+ XXXX
• OPTION 4A - 4 DIGIT NPA WITH NEW “B” DIGIT
   – N(X)XX + XXX + XXXX
• Steering Code Proposal
   – SC (2 Digit) + NPA + XXX+ XXXX
                                 Eliminated Options




4 digit NPA with new A digit
(N)XXX + XXX + XXXX

National Destination Code
(NDC)
NDC (1 Digit) + NPA + XXX+
XXXX
4 DIGIT NPA WITH NEW “B”
DIGIT
N(X)XX + XXX + XXXX


Steering Code Proposal
SC (2 Digit) + NPA + XXX+ XXXX
  Rationale for Elimination of Option 2A

• OPTION 2A - 4 DIGIT NPA WITH NEW A DIGIT
                    (N)XXX + XXX + XXXX
  Rationale:
  • Transition Problem
      • 0+ Dialing is not supported
  • Dialing Problem
      • Reintroduction of 1+ prefix dialing
  • User Impact
      • Confuses relationship with existing NPAs. New NPAs less
        similar to existing than in other options
     Rationale for Elimination of Option 2A


                     0 + Dialing Problem
For a credit card call during the permissive period:
  One can dial either:
  0 + (2) NPA - NXX – XXXX (Expanded format) or
  0 + NPA – NXX – XXXX (Existing format)
  (Receives a prompt) + Credit card number
  example: if original number was 202 345 9876
  Then during permissive time frame you can dial
              0 + (2) 202 345 9876
       or     0 + 202 345 9876
A switch may think the first number is 0 220 234 5987
There is no way to differentiate the old from the new
       Rationale for Elimination of Option 3A
•   OPTION 3A - NATIONAL DESTINATION CODE (NDC)

               NDC (1 Digit) + NPA + XXX+ XXXX

    Rationale:
    • Transition Problem
        • 0+ Dialing is not supported
    • Dialing Problem
        • Requires a prefix in transition and also on an ongoing basis for
          inter NDC dialing
        • Eliminates uniform dialing throughout the NANP
    • User Impact
        • No simple rule for transforming an old number to a new
          number; requires users to learn new geographical
          segmentation
      Rationale for Elimination of Option 4A

•   OPTION 4A - 4 DIGIT NPA WITH NEW “B” DIGIT
                 N(X)XX + XXX + XXXX
Rationale:
    • User Impact
       • Requires users to insert a digit in the middle of the area code
    • Regulatory Issue
       • Fails to address Canadian request for identification of unique
         geographic resources
    • NANP Exhaust Impact
       • Does not allow release of 80 N9X NPAs for immediate
         assignment since they are used for transition purposes
    Rationale for Elimination of Steering Code
                     Proposal

•   Steering Code Proposal
              SC (2 Digit) + NPA + XXX+ XXXX
Rationale:
    • Transition Problem - 0+ Dialing is not supported
    • Dialing Problems
        • Requires a prefix in transition and also on an ongoing basis for
          inter SC dialing
        • Eliminates uniform dialing throughout the NANP
    • User Impact
        • No simple rule for transforming an old number to a new
          number
        • Requires users to learn new geographic segmentation post
          implementation
    • Code conflicts - conflict between SC's in the 00 to 11 range and
      the existing NANP prefixes (e.g., 00, 01, 101XXXX, etc.).
       Additional Plans that were Eliminated

Approximately 20 additional proposals were considered. The
following 4 examples represent other unique concepts submitted
by the public:

•Postalized Structure (ZIP Codes) - Two proposals were received
recommending the use of U.S. postal zip codes as five-digit NPAs.

•K Digit (eleventh digit) Service Identifier - This proposal was
offered to resolve the problems associated with the increase in the
number of NPA splits. A single NANP number which uses an
eleventh digit to differentiate between services and/or applications
e.g., home, office, fax, cellular, etc.

•Non-Disruptive Plan for NANP Expansion - This proposed NANP
Expansion Option uses five-digit NPA codes which, ultimately
replace the existing three-digit NPAs. The two new digits are added
after the existing NPA (i.e., NXX +XX).

				
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