A primary advertising classification is assigned at the time of the establishment of telephone exchange service if the carrier that provides telephone exchange service assigns the classification or if a tariff or State requirement obligates the carrier to provide yellow pages listings as part of telephone exchange service to businesses. Subpart Y_Truth-in-Billing Requirements for Common Carriers; Billing for
Unauthorized Charges
Source: 64 FR 34497, June 25, 1999, unless otherwise noted.