Bouygues Telecom picks iBASIS for fully outsourced roaming model
Bouygues Telecom and wholesale communications specialist iBASIS have signed a long-term strategic partnership covering international voice, IPX connectivity and managed roaming services. Under the agreement, iBASIS takes exclusive responsibility for Bouygues Telecom's international voice wholesale and IPX traffic, while also assuming operational control of the French operator's roaming negotiation and commercial management activities.
The deal makes Bouygues Telecom, which reported revenues of 8.1 billion euros in 2025 and serves 27.4 million mobile customers in France, the first independent European mobile network operator to adopt a fully outsourced roaming model. iBASIS counts it as the eighth Tier One operator to join its consolidation approach. The two companies have jointly launched a product called Roaming Office, intended to pool negotiating leverage and operational expertise for independent operators that lack the scale of pan-European group structures such as Deutsche Telekom or Vodafone.
The deal
Carmine Muscariello, VP Executive Director for Wholesale and Operator Relations at Bouygues Telecom, said the partnership was designed to "rebalance roaming negotiations, accelerate our transition to VoLTE and 5G SA, and capture new wholesale opportunities." The reference to VoLTE and 5G standalone roaming is substantive: the industry is mid-transition from legacy 2G and 3G fallback roaming to voice-over-LTE and eventually 5G SA end-to-end sessions, a shift that requires fresh bilateral agreements with hundreds of partner networks globally. Outsourcing that renegotiation to a specialist with existing bilateral relationships is a credible operational rationale.
Nicolas Barret, Chief Growth Officer at iBASIS, pointed to the rise of travel eSIM as a further structural shift placing pressure on independent operators. Travel eSIM products, which allow consumers to switch to a local or aggregated data plan without a physical SIM swap, erode traditional roaming revenue and force operators to reconsider how they monetise inbound visitors. France is, by visitor volume, the world's most visited tourism destination, giving Bouygues Telecom's inbound roaming traffic particular commercial weight.
Market context
The wholesale roaming and international voice market is increasingly polarised between large operator groups, which can negotiate bilaterals at scale internally, and independent national operators that must rely on third-party wholesale partners. iBASIS, which is majority-owned by Dutch operator KPN following a 2020 acquisition by investment firm Temasek, positions itself as a neutral aggregator for the latter cohort. Rivals in the managed roaming space include BICS (owned by the Proximus group), Syniverse and Tata Communications, each of which offers varying combinations of clearing, fraud management and bilateral negotiation services.
The creation of a named product, Roaming Office, suggests iBASIS intends to replicate the Bouygues Telecom model with additional independent operators rather than treat it as a bespoke arrangement. If that commercial thesis holds, the partnership is as much a product launch as a bilateral deal, with the French operator effectively serving as the reference customer for a new managed-roaming service line.
Regulatory and standards read-across
Roaming pricing in the European Economic Area is governed by the EU Roaming Regulation, most recently revised in 2022, which caps retail roaming surcharges and obliges operators to maintain roam-like-home terms. Wholesale rates remain commercially negotiated, which is precisely where an aggregator with consolidated traffic volumes can extract better terms. The 5G SA roaming transition also intersects with GSMA standards work on inter-operator data exchange and NRF-based roaming architectures, areas where bilateral renegotiation timelines are already stretching.
No contract value, revenue-share terms or contract duration have been disclosed. Investors and peers will be watching for further Roaming Office sign-ups as the measure of whether iBASIS has built a scalable independent-operator product or a single marquee deal.