Call Guardian Authentication Hub 

Let’s trust the phone call again 


Fighting the robocalling epidemic requires robust call authentication (STIR / SHAKEN) combined with high quality data analytics to sort the good calls from the bad. Only then can we regain trust in the telephone call by putting accurate information into the hands of subscribers to make an informed decision whether to answer the call. Metaswitch and TNS deliver the most accurate and reliable robocall prevention solution, so your subscribers will pick up the phone again.

With billions of unwanted robocalls made every month and hundreds of thousands of complaints to regulators, the robocall problem has seemingly spiraled out of control. The fix is not easy and tremendous efforts have been made across the industry to design a comprehensive solution that will solve the problem once and for all.

STIR / SHAKEN is the first key element of this solution. The ability to spoof Caller ID is one of the critical enablers of the rise of illegal robocalls. STIR / SHAKEN provides the framework to trust Caller ID again by using secure digital signatures to sign the telephone call.

STIR / SHAKEN tells us whether we can trust where the call comes from, but it does not tell us whether a call is good or bad. For that, Real-Time Analytics based upon high volumes of daily network events are required. Analytics use the latest AI technology to crunch these events through data engines and generate highly accurate and up-to-date reputation scores for individual calls. Reputation scores are applied to each individual call to provide the best experience for your subscriber – whether by blocking, sending to voicemail or warning the subscriber of a potential nuisance call.

Call Guardian Authentication Hub combines Metaswitch’s best-of-breed QCall for STIR / SHAKEN and TNS’s Call Guardian analytics to deliver the most accurate and reliable robocall prevention solution. The Hub is a fully managed hosted solution, so you can deploy it in a matter of days without installing new equipment or software in your network.

Call Guardian Authentication Hub Datasheet

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