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Press Release -- February 24th, 2022
Source: tns

TNS Launches TDM Link Replacement Service Helping Carriers Reduce OPEX Costs and Achieve STIR/SHAKEN Compliance

RESTON, Va.–(BUSINESS WIRE)–Transaction Network Services (TNS) has today launched its new managed TDM Link Replacement Service (TLR) which enables carriers to successfully convert SS7 signaling protocols to SIGTRAN, eliminating end of life TDM circuits and delivering a more robust IP-based circuit path.

TLR will also support conversion of Integrated Services Digital Network User Part (ISUP) to Session Initiation Protocol (SIP). ISUP is the protocol used to support the signaling necessary to provide voice and non-voice services in telephone communications. SIP is the protocol required to support STIR/SHAKEN, which is the new digital authentication standard aimed to mitigate robocall spoofing. STIR/SHAKEN is a digital certificate to the SIP information used to initiate and route calls in VoIP systems and will assist carriers with achieving TRACED Act compliance.

“Many Tier 2 and Tier 3 carriers are still faced with the risky, costly and complex migration to IP-based connectivity solutions to replace their legacy TDM equipment,” said Bill Versen, TNS’ President, Communications Market. “Deploying our new TLR solution enables them to keep their legacy equipment and also delay changing their network to full IP, yet still achieve STIR/SHAKEN compliance with Call Guardian, our leading analytics and call verification system.”

The TLR solution consists of a minimum of two TLR gateways at each customer site which are monitored and managed by the TNS Operations Team with 24/7 support. Full fail over and redundancy are also components of the solution helping to eliminate operational risks.

“As an organization TNS is dedicated to helping carriers with their strategic approaches to fulfil their IP upgrade requirements,” added Versen. “This flexible and scalable TLR managed service can be tailored to individual carrier needs to help mitigate ongoing cost increases for TDM links, providing a cost-effective solution before critical equipment reaches end of life.”

For more information about the TDM Link Replacement Service, please visit

About Transaction Network Services
TNS is a leading global provider of Infrastructure-as-a-Service (IaaS) solutions to the communications, payments and financial markets. Established more than 30 years ago, its extensive portfolio of innovative, value-added services now supports thousands of organizations across more than 60 countries to interact efficiently, conduct mission critical processes securely and adopt new technologies flexibly. TNS’ pioneering Communications Markets business has been a continuous innovator interconnecting carrier networks efficiently, securely and reliably. The Communications Market’s IaaS solutions support the demanding needs of carriers, from call analytics which identify unwanted robocalls while enabling enhanced mobile identity for legitimate callers, through to interoperability, clearing, settlement and analytics for LTE and 5G. For more information, please visit


Clare Cockroft
T: +44 (0)114 292 0163 / +1 703 814 8065

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Brian Lustig
T: 202-836-9112

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