Sec.  64.2329   Format.

   (a) A carrier shall provide subscriber list information obtained in its
   capacity  as  a provider of telephone exchange service to a requesting
   directory publisher in the format the publisher specifies, if the carrier's
   internal systems can accommodate that format.

   (b) If a carrier's internal systems do not permit the carrier to provide
   subscriber list information in the format the directory publisher specifies,
   the carrier shall:

   (1) Within thirty days of receiving the publisher's request, inform the
   directory publisher that the requested format cannot be accommodated and
   tell the directory publisher which formats can be accommodated; and

   (2) Provide the requested subscriber list information in the format the
   directory publisher chooses from among the available formats.