§  9.6   Obligation for providing a permissive dialing period.

   Upon completion of translation and routing of 911 calls to a PSAP, a
   statewide default answering point, to an appropriate local emergency
   authority, or, where no PSAP nor statewide default answering point has
   been designated and no appropriate local emergency authority has been
   selected by an authorized state or local entity, to an appropriate
   local emergency authority, identified by a telecommunications carrier
   based on the exercise of reasonable judgment, the telecommunications
   carrier shall provide permissive dialing between 911 and any other
   seven-or ten-digit emergency number or an abbreviated dialing code
   other than 911 that the public has previously used to reach emergency
   service providers until the appropriate State or local jurisdiction
   determines to phase out the use of such seven-or ten-digit number
   entirely and use 911 exclusively.