Cost may have been the key driver that originally lit the fire under carriers when it came to migrating away from expensive TDM networks, but compliance with the FCC’s STIR/SHAKEN mandate has proved to be the most significant benefit for those switching to IP.

The TRACED Act requires carriers to upgrade their non-IP networks to IP and implement STIR/SHAKEN framework by no later than June 30, 2021. The FCC wants carriers that are unable to upgrade their networks to IP to implement a non-IP caller ID authentication solution.

With less than eight months until this deadline, TNS’ innovative Voice IPX solution is appealing to carriers that want to solve this challenge at the same time as they address their IP migration plans.

Voice IPX provides authentication and validation services and can leverage the TNS Call Guardian Artificial Intelligence (AI)/Machine Learning (ML) based real-time reputation score algorithms to provide malicious intent based screening in a layered approach with STIR/SHAKEN parameters. When coupled with the Call Guardian Authentication Hub, Voice IPX strategically positions carriers to implement STIR/SHAKEN call signing with the other companies that they exchange voice with. Voice IPX enables voice service providers to extend voice reach, simplifying their voice peering relationships in addition to meeting the FCC’s requirement of implementing an IP call authentication framework. The Call Guardian Authentication Hub also offers higher levels of protection against robocalls to the carrier’s subscribers.

Comprehensive Support for Worldwide Voice Peering

Voice IPX was designed to help carriers eliminate costly TDM infrastructures and support the move to an IP-based network. The service provides a globally secure, scalable MPLS connection for network connectivity, bringing together CDMA, GSM and LTE networks through a high quality, end-to-end voice interoperability platform.

Heralded for its ability to simplify one-to-many global connectivity and reduce network complexity, Voice IPX uses the industry’s most widely deployed Session Border Controller, Metaswitch Perimta, to add value by applying logic to traffic and performing powerful transcoding and message manipulation functions.

Optimal Routing Between Voice Partner Networks

Voice IPX extends a carrier’s voice reach through the existing IPX connection with TNS and simplifies voice peering by eliminating the need for a gateway to convert VoLTE/SIP into TDM. It also delivers end-to-end IP calls with optimal routing and provides access to E911 providers with an emergency breakout architecture.

Voice IPX’s flexible configuration provides multiple choices for network design, including preferences for network transport type, topology, speeds, load-balancing and redundancy.

IP network monitoring and traffic analysis with real-time and historical reporting is provided, and TNS’ robust global IPX network is supported with redundant access to multiple points-of-presence.

As carriers seek to migrate to IP networks, while faced with regulatory challenges, TNS’ Voice IPX offers the promise of solving multiple problems through one feature-rich solution.

Find out more about TNS Voice IPX at

Barry Metz is Senior Product Manager at TNS with specific responsibility for its mobility solutions which include traditional and next generation solutions to support essential network, registry and database capabilities.  

Ramesh Chellamani is Director of Product Management at TNS with specific focus on 5G, telecom security, IoT, blockchain and cloud native security. Ramesh and Barry can be reached at