Sec.  42.6   Retention of telephone toll records.

   Each carrier that offers or bills toll telephone service shall retain for a
   period of 18 months such records as are necessary to provide the following
   billing information about telephone toll calls: the name, address, and
   telephone number of the caller, telephone number called, date, time and
   length of the call. Each carrier shall retain this information for toll
   calls that it bills whether it is billing its own toll service customers for
   toll calls or billing customers for another carrier.

   [ 51 FR 39536 , Oct. 29, 1986]