Why Choose modulus
What is number portability?
Number portability is the process through which a business transfers its existing phone numbers to a new provider while keeping those numbers unchanged. It is a subscriber right under the EETT regulatory framework and does not depend on the consent of the provider you are leaving.
In practice, your business contact details remain unchanged. There is no need to update customers, print materials, signage, listings or advertising materials.
Which numbers can be transferred to a VoIP provider?
Number portability can be used by both small and medium-sized businesses and organisations with larger and more complex telecommunications requirements. For example, a business with telephony across multiple locations can organise its migration to a new telephony infrastructure while retaining the existing numbers of its locations.
1. Assessment
We record your numbers, the current provider and the connection type, and confirm that all numbers can be transferred.
2. Portability request
modulus prepares and submits the request. You do not need to contact your previous provider.
3. Configuration
We activate your VoIP service or cloud PBX in parallel with your existing line, so that it is ready before the transfer.
4. Transfer
Number portability is activated within a predefined window so that your business is not left without telephone service.
5. Confirmation
We test incoming and outgoing calls for each number before closing the request.
Number portability cost
Number portability to modulus is provided free of charge. There is no portability fee or additional charge for transferring your number. Charges for the service you choose to activate apply separately, according to the relevant price list. Your numbers remain yours, and you can transfer them to another provider through the number portability process.
What happens to your line during the transfer?
The new service is activated and tested in parallel with your existing line. Your existing line remains active until the final transfer, so that there is no interruption to incoming calls. The transfer is completed within a predefined window agreed with you.
Number portability and EETT, subscriber rights
Number portability is regulated by EETT and is an obligation for every licensed electronic communications provider in Greece. modulus S.A. is a licensed provider, registered in the EETT Providers Registry, with its own numbering resources.
If you work with a reseller that does not hold its own licence, your business is not covered by the relevant number portability obligations.
Connect VoIP telephony with your business tool ecosystem
Integrations with Communication & Collaboration Platforms
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Integration with CRM & Customer Communication Platforms
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AI Voice & Conversational Platform Integrations
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Frequently Asked Questions
Yes. Greek geographic numbers (210, 2310 and others), nationwide numbers (801, 800) and short codes can be transferred to the modulus network through number portability, with no portability charge. modulus handles the request and all communication with the previous provider, while your existing line remains active until the final transfer.
Yes, you can keep all of them. Number portability is a subscriber right under the EETT regulatory framework and does not depend on the consent of the provider you are leaving. Your business contact details remain unchanged, so there is no need to update customers, printed materials, signage or listings.
The number portability cost with modulus is 0€. In accordance with Law 4727/2020 (Article 214, paragraph 4), no direct portability charges apply to end users.
There is no monthly charge for number portability, and the zero portability cost applies regardless of the number type or the originating provider.
No. The new service is activated and tested in parallel with your existing line, and the transfer is completed within a predefined window. Your existing line remains active until that point, so that there is no interruption to incoming calls.
No. The numbers remain yours. You can transfer them to any other licensed provider through the same number portability process.