Preface The Industry Numbering Committee (INC) provides a forum for customers and providers in the telecommunications industry to identify@ discuss@ and resolve national issues that affect numbering. The INC is responsible for identifying and incorporating the necessary changes into this document. All changes to this document shall be made through the INC issue resolution process and adopted by the INC as set forth in the ATIS Operating Procedures. This document is maintained under the direction of ATIS and the INC. It is distributed exclusively by ATIS.