How T-Mobile, AT&T, Verizon and Sprint fight robocalls on their network | 6/6/2019 | Staff
chrismpotts (Posted by) Level 3
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Answering the phone nowadays can be like playing Russian roulette—eventually, you're going to answer a robocall, and that's a game nobody wants to play.

Robocalls are the no. 1 complaint from consumers to the Federal Communications Commission, and along with cell phone providers, they are fighting robocalls with a number of tools to make answering the phone less of a hassle.

June - FCC - Service - Providers - Verification

In June, the FCC mandated service providers use caller verification at the network level to verify the legitimacy of a call—known as the SHAKEN/STIR, or Signature-based Handling of Asserted Information Using toKENs and the Secure Telephone Identity Revisited standard. This would give providers the option to stop a call before it reaches a customer, or label the call either as a verified, good caller, or warn the customer the call might be spam.

SHAKEN/STIR aims to put an end to "spoofing", or using phone numbers similar to the person's they're calling to trick them into picking up thinking it's someone they know. It must be implemented by the end of the year by all providers.

Providers - Call - Protection - Customers - Tools

Some providers offer spam call protection to customers already, and have other tools they use to fight robocalls. These are the tools the four major cell service providers—T-Mobile, Verizon, AT&T and Sprint—offer to their customers.

T-Mobile is taking the same approach to spam calls as many platforms do to spam emails—by sorting and labeling them as spam before they get to customers, says vice president of engineering Grant Castle.

Network - Spam - Calls - Pain - Customers

The network realized spam calls were a pain for their customers about two years ago and started labeling spam calls at the network level. It uses technology from First Orion to inspect calls as they come in, and label them as "scam likely". This service is automatically offered to T-Mobile customers.

T-Mobile also offers free Scam Block service which blocks likely spam...
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