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Article 11 & telecom munications privacy: A practical guide for businesses
Protecting telecommunications privacy is fundamental for any business utilizing traditional or VoIP telephony. Article 11 of Law 3471/2006 defines the obligations of providers and the rights of users in Greece. By understanding and implementing these rules, businesses can ensure their communications remain secure while fostering trust with customers and partners.
Article 11 protects the content of telephone conversations from unauthorized access. The monitoring or recording of calls is strictly prohibited without the prior consent of all participants or a court order. Additionally, subscribers' personal data must be stored securely and used exclusively for the purpose for which they were collected. Lifting the confidentiality of communications is only possible in exceptional circumstances (e.g., national security), following strictly defined legal procedures.
A critical provision concerns the prohibition of unsolicited calls for advertising purposes to individuals registered in the special "Article 11 Registry." If a subscriber has opted out of receiving promotional calls, businesses are legally obligated to exclude them from their marketing lists.
Penalties and fines
Non-compliance with the Article 11 Registry can lead to significant administrative sanctions imposed by the Hellenic Data Protection Authority (HDPA). Fines are not fixed but scale based on the severity and frequency of the violation, and can be imposed immediately without prior warning.
Complying with all these obligations may seem challenging, especially for small and medium-sized businesses, but with the right VoIP provider and proper practices, compliance becomes manageable. Voiceland recommends the use of secure cloud infrastructure, call encryption, and restricted access to data to ensure that communications remain private and protected.

Common misunderstandings businesses should be aware of
There are also several misunderstood or unclear aspects of Article 11 that every business should understand:
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Metadata: Call details (caller identity, timestamp, duration) are protected just as strictly as the call content itself.
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Data Retention: The law specifies strict time limits for the retention of communication data.
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GDPR Integration: Compliance with Article 11 must be fully aligned with the requirements of the General Data Protection Regulation (GDPR).
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Management of VoIP numbers: Number portability or changes may affect confidentiality if proper procedures are not followed.
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Advertising calls: Calling subscribers registered in the Article 11 opt-out registry for commercial purposes is strictly prohibited.
Best practices for secure VoIP usage
Voiceland also recommends practical steps for the secure use of VoIP services:
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Choose a VoIP provider that offers call encryption and advanced security protocols
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If your business records calls, utilize an Interactive Voice Response (IVR) system to automatically inform the caller before the conversation begins.
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Establish clear internal data access rules and train your staff on the legal and safe use of VoIP technologies.
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Regularly apply updates, firewalls, and other technical measures to prevent external threats.
Article 11 is not just a legal requirement, it serves as a practical framework for responsible and secure telephony management.
Choosing the right provider, following proper procedures, and continuously training staff ensure that communications remain confidential and legally compliant, while also enhancing the credibility of the business in the eyes of customers and partners.
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