T-Mobile, Comcast and Inteliquent recently announced they’ve achieved an industry first in the war against spoofers and scammers, completing the first end-to-end STIR/SHAKEN call verification across three networks.
T-Mobile and Comcast announced STIR/SHAKEN interoperability earlier this year, giving consumers with a growing number of capable smartphones peace of mind that calls from Comcast’s Xfinity Voice phones to T-Mobile phones (and vice versa) are not generated by a scammer spoofing a number. Now, calls can be routed through Inteliquent as well as directly between T-Mobile and the Xfinity Voice landline phone service and still ensure that the number displayed has been verified. With this technical first, the companies are expanding what is possible with STIR/SHAKEN, not only enabling peer-to-peer call verification but also connections via tandem networks.
STIR (Secure Telephony Identity Revisited) and SHAKEN (Secure Handling of Asserted information using toKENs) standards are recommended by the FCC to identify authentic calls on networks. T-Mobile and Comcast’s Xfinity Voice were the first to deliver network interoperability in April 2019. Comcast has implemented STIR/SHAKEN for all Xfinity Voice home phone subscribers, authenticating outgoing residential calls and validating incoming authenticated calls.
As part of the news, T-Mobile also announced that Caller Verified, the Operator's implementation of STIR/SHAKEN, is now operable across 17 smartphones, with more coming soon.
John Legere, CEO of T-Mobile
We were first to announce STIR/SHAKEN readiness, first to implement caller verification, and first to launch cross-network caller verification … we continue to be on the front lines to keep Un-carrier customers protected, and we won’t stop.
Tony Werner, Presient of Technology, Product and Eperience, Comcast
This is another milestone in our efforts to implement STIR/SHAKEN. We were one of the first companies to conduct a non-lab exchange of a verified call and we co-authored many of the core STIR and SHAKEN specifications.
