AT&T and Comcast claim “anti-robocalling milestone” with new Caller ID tech

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AT&T and Comcast today said they have completed a successful cross-network test of a new Caller ID authentication system, and they plan to roll out the technology to consumers later this year.
AT&T and Comcast are among the phone providers implementing the new 'SHAKEN' and 'STIR' protocols, which use digital certificates to verify that Caller ID numbers aren't being spoofed.
Today's AT&T/Comcast announcement said the carriers completed 'an exchange of authenticated calls between two separate providers' voice networks that is believed to be the nation's first.' They called the test an 'anti-robocalling fraud milestone.'
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