The FCC's Wireline Competition Bureau has denied petitions from the U.S. Cellular Corp. and Verizon Communications, Inc., seeking extensions of the June 30 deadline to complete implementation of the STIR/SHAKEN (Secure Telephony Identity Revisited/Signature-based Handling of Asserted information using toKENs) caller ID authentication framework on the Internet protocol (IP) portions of their networks."Because U.S. Cellular does not have to transmit traffic with authenticated caller ID information where it is not technically feasible to do so, its claimed undue hardship has already been addressed by the Commission's rules, and it identifies no other barriers to fully implementing STIR/SHAKEN by the deadline," the bureau said in an order adopted March 30 in WC docket 17-97.
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