Action Recommended by October 1, 2026 – Verify Your European Caller IDs

Hello 🙏🏻

We would like to inform you of an upcoming regulatory change that may impact a subset of outbound calls to certain European destinations.

Telecommunications regulators across Europe are introducing stricter Caller ID authentication and anti-spoofing requirements to combat fraudulent and misleading calls. These include France’s Law of 24 July 2020, Germany’s Section 120 TKG caller identification and blocking rules, Switzerland’s anti-spoofing framework, and similar requirements adopted by other European regulators. These regulations require operators to block calls that present a Caller ID (CLI) that cannot be verified as belonging to the calling party.

To comply with these regulations, our carrier partners will begin enforcing enhanced Caller ID validation rules starting October 1, 2026.

This change applies only to local (domestic) calls where:

If the presented Caller ID cannot be validated by the carrier, it will be replaced with the provider’s service phone number.

This change does not affect international calls where the originating and destination numbers are in different countries.

Austria, Belgium, Bulgaria, Croatia, Cyprus, Czechia, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, and Switzerland.

This change primarily affects customers making outbound calls to local destinations within the affected European countries using a non-verified Caller ID that is not assigned through the AudioCodes Calling Service.

To minimize customer impact, AudioCodes will support the verification of customer-owned Caller IDs used for outbound calls.

Customers using custom Caller IDs are encouraged to verify their ownership of the numbers presented for outbound calls.

Please note that verification does not guarantee call completion in every case. Some national operators may still reject domestic calls when a local Caller ID is presented over an international route, depending on their local regulatory requirements.

Simply open a support ticket or reply to this email, and our team will guide you through the verification process.

To verify your numbers, ask questions about this change, or request a review of your calling configuration, please contact us through your preferred support channel. You can reply to this email, open a support ticket, or reach out through any of our available support channels.

Kind regards,

Live Hub Team 🤗