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This message replaces the one sent for starting at October 1, 2026.
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 Franceâs Law of 24 July 2020, Germanyâs Section 120 TKG caller identification and blocking rules, Switzerlandâs 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 September 23, 2026. Not on October 1 as initially sent.
What Is Changing?
This change applies only to local (domestic) calls where:
The originating Caller ID belongs to one of the affected countries.
The destination number is within the same country.
The incoming leg of the call has not been received from Telnyx.
If the presented Caller ID cannot be validated by the carrier, it will be replaced with the providerâs service phone number.
This change does not affect international calls where the originating and destination numbers are in different countries.
Affected 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.
Who May Be Impacted?
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 and customers who are using SIP Connections with Telnyx SIP Trunk type.
If you would like to verify your number with Telnyx, AudioCodes representative will be able to assist upon a scheduled session.
Questions?
Please feel free to ask questions about this change or request a review of your calling configuration. You can contact us through your preferred support channel. You can also reply to this email, open a support ticket, or reach out through any of our available support channels.