Registry, as well as continuing to call consumers who had previously asked not to be called again. *Do Not Call Fighting Back-Authentication and Verification The telecommunications industry is fighting back against robocalls that clog their networks and result in millions of calls to telephone companies' customer service centers about fraudulent calls. They have formed an industry group, the Robo Strike Force, to develop technology to identify and block illegal calls, launch a consumer education program, and explore legal options to deter telemarketers. The Robo Strike Force is made up of telephone companies and smartphone manufacturers. Currently, individuals and companies that make illegal robocalls are subject to fines. The Robo Strike Force is lobbying the Federal government to make robocall telemarketers subject to criminal penalties, in addition to civil fines. And, significantly, the Robo Strike Force is developing technology to identify "spam" calls. The technology is called SHAKEN (Signature-based Handling of Asserted Information using toKENs) and STIR (Secure Telephone Identity Revisited). SHAKEN and STIR are designed to authenticate that calls are legitimate and to verify at the receiving provider's network that they are legitimate. SHAKEN and STIR operates by attaching a 15-character encrypted token to legitimate calls at the originating www.TechnicalPDF.com point of the call and sending the encrypted characters along with the call to the receiving telephone company as a verification that the call is legitimate. SHAKEN and STIR only work on VoIP (Voice over Internet Protocol) voice traffic. Encryption uses mathematical algorithms to scramble bits SO that only the intended recipients can decode them. The Do Not Originate Registry Trial The intent of the Do Not Originate (DNO) Registry is to block numbers that should never originate calls: invalid numbers, valid numbers that are not allocated to a voice service provider, and valid numbers that are allocated but not assigned to a subscriber. With the FCC