Abbreviated Dialing for One Call Notification

1
Abbreviated Dialing for One Call Notification

• Issue Management Group Report
• July 15, 2003

2
Background

• The Pipeline Safety Improvement Act (Public Law
  107-355) provides for the establishment of a
  3-digit nationwide toll-free telephone number
  system to be used by State one-call notification
  systems.
• Based on discussions at the January 22, 2003
  meeting of the NANC the Abbreviated Dialing for
  One Call Notification IMG was formed to examine
  issues related to implementation of this mandate

3
Assumptions

•   The 3 digit number selected will translate
  into existing One Call numbers.
•   On wireline originated calls, the Originating
  NPA/NXX will determine the One Call number into
  which the 3 digit code will be translated into a
  routable 10 digit number. On wireless
  originations, calls will be routed to a One Call
  number based on the location of the originating
  cell site or Mobile Switching Center.
•   Implementation will be national in scope and
  uniformity.
•   The dialing sequence for all Service Providers
  will be the same.

4
Consideration of Alternatives

• The IMG identified three possibilities N11,
  geographic NPA (i.e., 344), or vertical service
  like code (e.g. 344, 344, 344)
• Rejected alternatives with or based on
• Wireline implementation difficulties
• Unsuitability for rotary telephones
• Recommend N11 over 344 because
• Follows established abbreviated dialing
  convention
• Minimizes impact on customer dialing
• Consumes fewer numbering resources
• National Telecom Damage Prevention Council may
  still prefer 344
• IMG still evaluating available N11 codes
• 811 least used but NENA has concerns over usage
  for 911 testing and misdialing
• Others, 611?, 411?

5
Next Steps

• IMG targeting report for September NANC
  discussion
• Does FCC need report sooner, and if so, can NANC
  schedule an interim conference call?