Interconnection Framework Guidelines for Licensed Operators

Interconnection between operators is a fundamental feature of any competitive telecommunications market. It is what allows a subscriber of one operator to call, message or exchange data with a subscriber of another operator, at home or abroad. The 2024 interconnection framework guidelines published by the Telecommunication Regulator of Cambodia consolidate and clarify the rules governing interconnection between licensed operators, including technical arrangements, commercial terms and dispute resolution.

The guidelines apply to interconnection between mobile network operators, between fixed-line and mobile networks, between international gateway operators and domestic networks, and to specific arrangements such as SMS interconnection, VoIP interconnection and IP peering. They are relevant to all licensed operators and, indirectly, to service providers whose commercial models depend on efficient interconnection.

The guidelines are built on a number of core principles, including the obligation of operators to interconnect with each other on request, the principle of non-discrimination, the principle of cost orientation for wholesale charges and the principle of technical feasibility. These principles reflect the objective of ensuring that end users can communicate freely across networks, that new entrants and smaller operators are able to compete effectively with larger incumbents and that innovation in retail markets is not constrained by opaque or unfair wholesale arrangements.

The guidelines also emphasise transparency. Operators are expected to make relevant technical and commercial information available to counterparties in a timely way, to publish reference offers where applicable and to keep their reference arrangements up to date as the market and technology evolve.

The guidelines require designated operators, typically those with significant market power, to publish a reference interconnection offer describing the terms on which they will interconnect with other operators. The reference offer typically covers technical parameters such as interface specifications, signalling, transmission and quality; commercial parameters such as charges, payment terms and invoicing; and operational parameters such as service level commitments, fault management and change control.

The regulator may review the reference offer, request amendments and, if necessary, impose changes. The reference offer is a floor for negotiation, so counterparties may agree different terms provided they do not undermine the objectives of the framework, including non-discrimination between similarly situated counterparties.

The guidelines address wholesale pricing for interconnection, including termination charges for voice and messaging, transit charges where applicable and other wholesale prices. The general approach is that prices should reflect the underlying costs of providing the service, using recognised cost methodologies, and that they should not be excessive, predatory or discriminatory.

The regulator may set benchmarks, glide paths or specific price ceilings for certain services, particularly where a significant market power designation applies. Operators are expected to keep the cost information necessary to justify their prices and to respond promptly to regulator queries about pricing decisions. Pricing arrangements should be reviewed periodically to reflect changes in technology, traffic patterns and market conditions.

The guidelines encourage the use of standardised, technology-neutral interconnection arrangements that support current and next-generation services. This includes both traditional TDM-based voice interconnection where still in use and IP-based interconnection for voice, messaging and data. Operators are expected to accommodate reasonable requests for new points of interconnection, subject to technical feasibility and reasonable planning timelines.

The guidelines also address the coordination of number portability, of signalling for lawful interception and public safety, and of arrangements to preserve caller identification and other information that supports fraud prevention and consumer protection. Ongoing coordination between operators is expected to keep technical arrangements aligned with evolving standards and business needs.

Interconnection service quality has a direct impact on the experience of end users. The guidelines expect operators to agree on service level commitments for interconnection, including targets for availability, fault repair and provisioning of new capacity. Service credits or other remedies may apply where commitments are not met.

Operators are expected to implement fault management processes that identify problems affecting interconnection promptly, that assign responsibility fairly between the parties and that resolve issues within agreed timeframes. Periodic reviews of interconnection performance should be conducted to identify recurring issues and to drive improvements.

The guidelines provide for a structured dispute resolution mechanism. Operators are expected to attempt to resolve disputes bilaterally in the first instance, with escalation to the regulator where bilateral resolution is not achieved within a reasonable period. The regulator has powers to review the facts, request information from the parties and issue binding decisions, including on commercial and technical matters.

The framework encourages timely dispute resolution so that end users are not affected by prolonged commercial disagreements between operators. Operators are expected to maintain interim arrangements to preserve service continuity while disputes are being resolved.

Smaller and newer operators often depend on interconnection with larger incumbents to serve their customers effectively. The guidelines provide them with a stronger basis for requesting interconnection on reasonable terms, for challenging pricing they consider excessive and for enforcing service quality commitments. Effective use of the framework requires early engagement with counterparties, careful documentation of requests and technical arrangements and, where necessary, timely escalation to the regulator.

For incumbents, the guidelines are a reminder that their conduct as wholesale providers is likely to be scrutinised. Internal processes should be aligned with the framework, staff training should reflect the applicable obligations and reference offers and internal pricing methodologies should be kept up to date and defensible.

Operators should confirm that their reference interconnection offers, individual agreements, technical arrangements and internal processes are consistent with the 2024 guidelines. Where the guidelines introduce new obligations or clarify existing ones, existing agreements should be reviewed and, where necessary, renegotiated. Records of pricing decisions, service quality performance and dispute resolution should be maintained in a way that supports regulator engagement and internal accountability.

For service providers that rely on interconnection arrangements to deliver their offers, the guidelines provide a useful reference for benchmarking their commercial and technical arrangements. Where existing arrangements fall short of the standards contemplated by the guidelines, structured engagement with the counterparties, supported where necessary by regulator escalation, may be appropriate.

Lex Civora advises operators and service providers on the design, negotiation and enforcement of interconnection arrangements, on engagement with the regulator on reference offers and pricing and on the resolution of interconnection disputes in a manner consistent with the framework.