In the Matter of USE OF THE CARTERFONE DEVICE IN MESSAGE TOLL TELEPHONE SERVICE; In the Matter of THOMAS F. CARTER AND CARTER ELECTRONICS CORP., DALLAS, TEX. (COMPLAINANTS), v. AMERICAN TELEPHONE AND TELEGRAPH CO., ASSOCIATED BELL SYSTEM COMPANIES, SOUTHWESTERN BELL TELEPHONE CO., AND GENERAL TELEPHONE CO. OF THE SOUTHWEST (DEFENDANTS) Docket No. 16942; Docket No. 17073 FEDERAL COMMUNICATIONS COMMISSION 13 F.C.C.2d 420 (1968); 13 Rad. Reg. 2d (P & F) 597 RELEASE-NUMBER: FCC 68-661 June 26, 1968 Adopted