How commercial architecture & governance discipline determine sustainable outcomes
In a previous Viewpoint, “Telcos: Outsource International Voice!,” we argued that outsourcing was a rational response to declining volumes and rising complexity in the international voice business. That conclusion still holds. Today, however, the central challenge is no longer whether to outsource, but how to structure outsourcing models. As margins tighten, traffic patterns evolve, and wholesale consolidation accelerates, long-term value depends increasingly on commercial architecture and governance rather than scale alone.
International voice now operates in a materially different environment to what it did only a few years ago. Across markets, operators report sustained annual declines in traditional international voice traffic. In mature European markets, annual erosion typically ranges from 10%–20%. In several Asia-Pacific and roaming-heavy markets, the impact has been even sharper, particularly following Voice over LTE (VoLTE) activation.
VoLTE has driven step changes rather than gradual erosion in certain traffic segments. Operators with significant roaming exposure report immediate traffic reductions of 30%–50% in affected corridors once VoLTE roaming is enabled. In some cases, roaming-related wholesale flows have fallen by as much as 70%–80% following full activation. While some traffic stabilizes at lower levels, these shifts have reset baseline expectations for international voice volumes.
Beyond VoLTE, traditional international voice continues to decline due to retail bundling, evolving pricing structures, and substitution toward over-the-top (OTT) communications.
Baseline annual erosion is found in domestic-originated international traffic, even in markets where international calling remains embedded in retail plans. In inbound-heavy markets, inbound volumes have declined over multiyear periods, particularly where call-back-home behaviors or roaming patterns have shifted. While the pace of decline varies across geographies, the direction is consistent: international voice volumes are contracting, and in certain segments the rate of erosion has accelerated (see Figure 1).
At the same time, the operating environment has become more complex. Fraud exposure remains significant in specific corridors, and effective mitigation increasingly requires active governance rather than passive technical controls. Regulatory scrutiny and compliance requirements have intensified, particularly in markets where international traffic intersects national security or consumer protection frameworks. These obligations persist regardless of traffic scale.
Capital allocation discipline has tightened across telecom groups. Investment priorities increasingly favor fiber, 5G, cloud connectivity, and subsea infrastructure. Where reinvestment in legacy switching platforms cannot meet internal return thresholds under projected volume declines, divestment or outsourcing becomes economically rational.
The wholesale carrier landscape is adjusting as well. As volumes decline, sustainability depends increasingly on scale and platform breadth. Smaller standalone wholesale operations face growing pressure to maintain routing quality, fraud intelligence, and compliance capabilities amid tightening margins. Larger aggregated platforms are better positioned to absorb declining volumes while sustaining operational resilience.
As noted in “Telcos: Outsource International Voice!,” outsourcing was driven by declining volumes, rising operational complexity, and the need for scale in wholesale operations. Those conditions remain unchanged, as operators continue to face sustained traffic erosion, ongoing fraud exposure, and persistent requirements for routing, compliance, and platform maintenance. At the same time, internal investment priorities have shifted away from legacy voice platforms. As illustrated in Figure 2, outsourcing remains a practical response to these constraints.
The rationale for outsourcing still holds, but the design and governance of outsourcing arrangements must now reflect a more demanding market environment.
Once the decision to outsource international voice comes to fruition, outcomes depend heavily on how the arrangement is designed and governed. Across regions and operating models, experience reveals that performance is shaped less by scale alone than by the quality of commercial discipline, internal alignment, and partner sustainability embedded into the outsourcing structure.
Outbound international traffic is primarily a cost-discipline exercise. In most markets, it is managed through routing optimization and corridor-based rate comparison rather than revenue expansion. Cost-plus frameworks and defined benchmarking processes can be structured with relative clarity, and several operators report measurable outbound cost improvements through disciplined execution.
Complexity arises through the definition and validation of benchmarks. Corridor mix, routing quality class, and comparator selection materially influence outcomes. Market comparators are not always stable. In some instances, competitors have offered aggressively priced routes that are loss-leading, temporarily subsidized, or dependent on lower-quality tiers. This reflects a clear quality-price trade-off that ultimately affects end users. When using such routes as reference points, they can distort commercial discussions within outsourcing arrangements.
To mitigate this risk, some operators retain a statistically meaningful share of traffic — often around 5% — outside the primary outsourcing route. A limited benchmark allocation enables ongoing validation of pricing and service quality without materially affecting scale economics. Continuous validation reduces dependence on theoretical comparator lists and strengthens negotiation discipline. Precise benchmark definitions, corridor-level transparency, and practical validation mechanisms are therefore essential components of outbound design.
Inbound traffic carries different dynamics. In several markets, inbound termination has historically represented a meaningful contribution to revenue and commercial positioning. However, evolving traffic patterns — driven by VoLTE activation, retail bundle changes, and shifting calling behavior — have reduced predictability.
Commitments calibrated to historical baselines have come under pressure where traffic patterns evolved for reasons outside wholesale control. Operators have observed that fixed long-term inbound guarantees can become misaligned when retail behavior changes.
The practical response is not to eliminate inbound commitments altogether but to design them more realistically. Recalibration mechanisms, phased adjustments, and shared-risk constructs help ensure that commitment frameworks remain aligned with traffic realities rather than historical assumptions.
Retail decisions increasingly shape wholesale outcomes. Adjustments in international bundles, retail pricing, roaming inclusions, or promotional offers directly affect traffic volumes, cost exposure, and fraud patterns. In several cases, retail plan changes occurred without systematic coordination with wholesale governance. When wholesale commitments anchor to traffic assumptions that retail strategy subsequently alters, tensions emerge. Sustainable outsourcing therefore requires formal coordination between retail pricing functions and wholesale oversight forums. In declining markets, internal alignment is as important as external contract design.
Fraud exposure remains a recurring operational risk in international voice. While technical firewalls are widely deployed, durable fraud reduction appears to depend more on governance discipline than on technology alone.
Effective programs have included:
In one documented case, leakage levels were reduced from approximately 20% of certain flows to below 1% only after the formalization of governance mechanisms. The critical design questions concern authority and accountability: who can stop traffic, how quickly routing can be adjusted, and how commercial exposure is allocated during investigations. Fraud mitigation succeeds when operational discipline complements technical capability.
As volumes decline and margins tighten, the long-term viability of the outsourcing partner becomes increasingly important. Several providers acknowledged that prior aggressive pricing or commitment strategies materially compressed profitability under current traffic conditions.
Scale, platform breadth, and geographic diversification influence a carrier’s ability to sustain investment in routing optimization, fraud intelligence, and compliance infrastructure. Selecting a partner solely on near-term pricing introduces long-term operational risk. Partner sustainability is therefore a primary design parameter, not an ancillary consideration.
Outsourcing performance ultimately depends on disciplined commercial design, internal alignment, and partner viability. The outsourcing decision establishes the framework; the quality of its design determines whether the arrangement remains stable as traffic volumes decline and market conditions evolve.
Operators have adopted different commercial models depending on their strategic priorities and constraints. Sustainable outcomes depend on aligning commercial architecture with capital-allocation objectives, regulatory context, and operational priorities. The determining factor is whether the chosen model reflects the operator’s primary objective.
In a limited number of markets, operators elect to divest their international voice business through an outright sale rather than implement a managed outsourcing contract. This approach transfers the operational responsibility and commercial exposure to an external entity, typically through a carve-out of the relevant business scope. The model is driven primarily by capital-allocation considerations and the conclusion that international voice is no longer strategically central.
Business divestment is most appropriate where:
Voice-only divestments often face valuation constraints due to declining volumes. For this reason, several transactions bundle voice with adjacent businesses such as IPX, signaling, roaming enablement, or messaging platforms. Bundling improves transaction feasibility by creating a broader economic profile rather than relying solely on shrinking traffic flows.
Personnel transfer is also critical to execution. Business continuity risks reduce when operating teams move with the asset. Yet, transition complexity increases significantly when there is a lack of institutional knowledge preservation. Business divestment therefore aligns with situations where capital redeployment and economic separation are the dominant objectives.
In markets where voice retains regulatory, national, or strategic significance, full divestment may not be appropriate. In such contexts, joint venture arrangements have been adopted to combine scale with retained influence.
Joint ventures are typically suited to environments where:
Under this model, risk is shared rather than fully transferred. The operator retains governance influence while benefiting from scale efficiencies and broader platform economics. This approach is particularly relevant where voice remains operationally or politically sensitive.
For operators whose primary objective is cost predictability and operational simplification, managed service arrangements remain prevalent. These arrangements are most appropriate where:
While revenue commitments continue to exist in the market, revenue-share mechanisms reduce reliance on rigid long-term volume guarantees and align incentives with realized traffic performance rather than historical baselines. Transparent cost-plus mechanisms and clearly defined benchmarking frameworks are central to these arrangements. Managed service models are appropriate where voice remains operationally important but is no longer a strategic investment focus.
A recurring observation across all models is that standalone voice economics are tightening. As termination rates decline and volumes contract, voice-only margins continue to compress. Under these conditions, long-term sustainability increasingly depends on integrating voice into broader service platforms.
Combining voice with IPX, signaling, messaging, communications platform as a service (CPaaS), or identity services provides several advantages:
In recent transactions, inclusion of signaling or IPX materially improved transaction feasibility relative to voice-only arrangements. This suggests that future outsourcing models are likely to become platform-centric rather than voice-centric. The appropriate commercial architecture therefore depends on the operator’s primary objective and its desired level of commitment (e.g., capital exposure, commercial risk) and control (strategic influence and governance participation) — see Figure 3.
There is broad alignment across the market regarding how international voice outsourcing is expected to evolve over the next five to 10 years. While timing varies by geography, the overall direction appears consistent:
International voice outsourcing remains strategically sound. However, the outcomes depend on disciplined design and alignment with current traffic realities. Several principles are becoming central to successful outsourcing models:
Ultimately, outsourcing’s effectiveness will depend on disciplined commercial design and sustained governance. Operators that treat outsourcing as a long-term economic and operational decision, rather than simply a procurement exercise, will be better positioned to manage continued market decline.
By Arvind Rajeswaran, Andrea Faggiano, Christoph Uferer
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