What is STFC and how to obtain authorization in Brazil

The Fixed Switched Telephone Service (STFC - Serviço Telefônico Fixo Comutado) is a telecommunications service that enables voice transmission between fixed endpoints using telephony processes. Unlike other services such as SCM (Multimedia Communication Service), STFC is regulated by Anatel and requires specific authorization to operate.

What is STFC?

STFC is a telecommunications service that enables voice communication between fixed points using telephone network infrastructure. It is essential for operators wishing to offer fixed telephony services in Brazil within the regulatory framework established by Anatel.

STFC Modalities

The service is divided into three main modalities:

• Local Service — Calls made within the same tariff area
• National Long Distance (LDN) — Calls between different registration areas
• International Long Distance (LDI) — Calls originating from or destined to other countries

Who can apply?

Entities that have CNAE codes 61.10-8-01 or 61.90-6-99 registered in their corporate documents may apply for STFC authorization. The company must be a legal entity duly incorporated in Brazil.

Authorization process

Obtaining STFC authorization involves four qualification requirements:

1. Legal qualification

Company registration documentation, corporate documents, and proof of adequate legal incorporation for providing telecommunications services.

2. Technical qualification

Detailed description of the systems to be used, including ART (Technical Responsibility Annotation) issued by CREA, proving technical capacity for operation.

3. Economic-financial qualification

Proof of good financial standing, demonstrating that the company has the conditions to sustain service operation.

4. Tax compliance

Verification of tax compliance with competent authorities, including negative debt certificates.

Costs and timelines

• Fee: R$ 400.00 (R$ 40.00 for public entities)
• Processing time: 31 to 60 days after complete documentation submission

Benefits of STFC authorization

1. Legal operation — Operating within the Brazilian regulatory framework
2. Credibility — Anatel-authorized operator seal
3. Diversification — Ability to offer multiple service modalities
4. Competitiveness — Participation in public tenders and bids
5. Interconnection — Right to interconnect with other operators

Post-authorization obligations

After obtaining authorization, the operator must maintain:

• Compliance with quality standards established by Anatel
• Continuous tax compliance
• Adherence to technical operating standards
• Submission of periodic reports to Anatel
• Continuity in service provision

Conclusion

STFC authorization represents a strategic expansion opportunity for VoIP providers wishing to operate within the Brazilian regulatory framework. With a well-documented process and requirements met, obtaining authorization is a fundamental step for any operator seeking to grow in the telecommunications market in Brazil.