TransNexus Blog

Comments for FCC robocall report

The FCC issued a call for comments on robocalling activity and prevention, including progress on SHAKEN/STIR. Here are highlights of comments offered.


Discover SHAKEN

ATIS published a technical report that describes a proposed architecture for a centralized signing and signature validation services used in a SHAKEN/STIR deployment. This blog post summarizes the rationale for this architecture.


Fake caller ID warning

ATIS has published a technical report on a framework for the display of verified caller ID. This report addresses the question “How should we tell a subscriber that caller ID has been verified, or that the caller ID is fake?” Specifically, what should be displayed on the subscriber’s telephone after SHAKEN/STIR processing? This blog post summarizes usability testing and framework proposals described in the report.


SIP Analytics® is a method to detect and prevent telecom fraud and unwanted robocalls. It checks each call in less than a second, before the call begins. It’s incredibly fast.

Sometimes a picture is worth a thousand words. In this blog post, we share a chart showing SIP Analytics in action blocking unwanted robocalls during the day and two high-speed fraud attacks at night for a TransNexus customer.


FreeSWITCH Configuration for SHAKEN/STIR

This blog post provides instructions on how to configure FreeSWITCH to interoperate with the TransNexus OSPrey server. OSPrey is a SIP redirect server that provides advanced Least Cost Routing (LCR), fraud control and STIR (Secure Telephony Identity Revisited) / SHAKEN (Secure Handling of Asserted information using toKENs) features.

TransNexus has tested this configuration in the development and testing of SHAKEN/STIR functionality in our NexOSS software. We are sharing this information with the community of telecommunications network engineers who are preparing their company’s FreeSWITCH for testing and deployment of SHAKEN/STIR functionality.