Sec. 42.7  Retention of other records.

    Except as specified in Sec. 42.6, each carrier shall retain records 
identified in its master index of records for the period established 
therein. Records relevant to complaint proceedings not already contained 
in the index of records should be added to the index as soon as a 
complaint is filed and retained until final disposition of the 
complaint. Records a carrier is directed to retain as the result of a 
proceeding or inquiry by the Commission to the extent not already 
contained in the index will also be added to the index and retained 
until final disposition of the proceeding or inquiry.

  Specific Instructions for Carriers Offering Detariffed Interexchange 
                                Services