“Securing the Future of Voice Communications with IP Migration” outlines a five-phase roadmap for CSPs navigating the global shift away from legacy PSTN infrastructure;
Companies to host companion webinar on December 9
As legacy Public Switched Telephone Network (PSTN) infrastructure becomes increasingly costly and complex to maintain, the pressure on Communications Service Providers (CSPs) to modernize is mounting. Regulators around the world, including the Federal Communications Commission (FCC) in the United States, Ofcom in the United Kingdom, Telecom Regulatory of India in India, and the Office of the Communications Authority in Hong Kong, are actively pushing the industry toward all-IP voice networks, while customer expectations and competitive pressure add urgency to an already complex transition.
To help CSPs navigate this shift, Transaction Network Services (TNS) and Juniper Research today announced the release of a new white paper, “Securing the Future of Voice Communications with IP Migration.” The paper examines the regulatory, operational. and business drivers behind the move to IP-based voice, and outlines a practical, phased approach CSPs can take to modernize without disrupting the reliable voice services their customers depend on.
“Modernization is not simply a technology replacement exercise,” noted Juniper. “CSPs must balance transformation goals with service continuity, operational efficiency and business growth, requiring a practical approach that minimizes risk while establishing a foundation for future IP-based communications.”
The white paper details the pressures driving this transition, including the increasing cost and complexity of maintaining aging TDM switching and interconnection environments, a shrinking pool of specialized legacy expertise and the regulatory push toward all-IP networks in regions across the globe.
According to Joe Dechant, VP of Product Transformation at TNS, “While the move to all-IP connectivity promises greater network efficiency and simpler interconnection between vendors and CSPs, there are valid industry concerns about increased investment as well as gaps in legal authority, rural coverage and the pace of change for consumers. Additionally, legacy PSTN infrastructure isn’t just expensive to maintain, it’s becoming a barrier to the new, revenue-generating services CSPs need to offer.”
Rather than treating modernization as an immediate all-or-nothing overhaul, the white paper lays out a five-phase journey CSPs can follow to move from “keeping legacy running” to a fully IP-ready operating model, including:
- Phase 1: Stabilizing the Legacy Network
- Phase 2: Reducing Dependence on TDM
- Phase 3: Simplifying Interconnection and Routing
- Phase 4: Modernizing Switching Operations
- Phase 5: Expanding Services and Revenue
Juniper contends that by breaking the transformation into discrete phases, CSPs can simplify operations, reduce their reliance on increasingly scarce, specialized expertise and steadily build the foundation for modern voice, VoIP and cloud communications offerings – all while protecting the reliability of the voice services their customers rely on today.
“The regulatory momentum behind all-IP migration is now undeniable, and CSPs that wait for a forcing event will find themselves migrating on someone else’s timeline instead of their own,” said Peter Boyland, Principal Analyst at Juniper Research. “Our research shows the CSPs that come out ahead aren’t the ones racing to rip out legacy infrastructure overnight. They’re the ones treating this as a staged operational transformation, sequencing the work so that reliability and revenue are protected at every step. That’s exactly why this white paper gives the industry a clear-eyed, practical framework for making this transition on their own terms.”
Webinar: Diving Deeper into the White Paper
To help CSPs put these findings into practice and dig deeper into the white paper’s findings, TNS and Juniper Research will host a companion webinar on Wednesday, December 9, 2026 at 12:00 pm ET. The session will further explore the regulatory forces accelerating IP migration, the operational challenges CSPs face along the way, and the five-phase framework for modernizing legacy networks while protecting service continuity and revenue.
Register for the webinar here.
To download the full white paper, “Securing the Future of Voice Communications with IP Migration,” visit the white paper resource page.