Sec.  64.2333   Burden of proof.

   (a)  In  any  future  proceeding  arising  under section 222(e) of the
   Communications Act or  Sec. 64.2309, the burden of proof will be on the carrier
   to the extent it claims its internal subscriber list information systems
   cannot accommodate the delivery time, delivery schedule, unbundling level,
   or format requested by a directory publisher.

   (b)  In  any  future  proceeding  arising  under section 222(e) of the
   Communications Act or  Sec. 64.2309, the burden of proof will be on the carrier
   to the extent it seeks a rate exceeding $0.04 per listing for base file
   subscriber list information or $0.06 per listing for updated subscriber list
   information.