Frequently Asked Questions

An international virtual number is a real landline number. It's called virtual because it works over the internet.

With an international virtual number you can both make and receive calls.

International virtual numbers don't support SMS.

Documents required to buy an international virtual number:
* ID card or passport
* Additional documents may be requested depending on the country.

Yes. You can use the international virtual number assigned to you on WhatsApp Business. Register it on the 3CX softphone, Zoiper or GS Wave mobile apps with the details DIDTR sends you, then sign up for WhatsApp Business by getting the verification code with the "Call me" option.

You can integrate your international virtual number with the cloud PBX. It supports SIP Trunk and SIP Register.

We cover more than 88 countries and offer many number types (local, national, mobile). Please visit our virtual numbers page to see our full coverage.

Yes. Once your international number is assigned, on request we create your extensions on the DIDTR 3CX cloud PBX and help all your users set up.

With 3CX Cloud PBX you get: • 4-digit extensions, • Main IVR, music on hold and out-of-hours announcement, • Queue and hunt group scenarios, • Calling from the phonebook, • Call reporting and status screen, • Call recording, • Voicemail, • Live call monitoring, • Online chat between extensions, • Scheduled conferences, • Web video meetings, • Desktop softphone and smartphone app, • Google Chrome web softphone, • Control your extension's calls with the web client, and more…

Yes. We send you the SIP registration details of the virtual number you buy. Using these details, you can set up a trunk on your PBX and make inbound and outbound calls through DIDTR core switches. If your PBX doesn't support SIP registration, you can set up an IP-to-IP trunk.

Yes. Once the account for your international virtual number is created, we send you your panel login. In the panel you can see your call history and call minutes.

You can make calls with your international virtual number using the call packages you buy from us.

Receive unlimited incoming calls for a fixed €3 per month.

After you click Sign up and fill in the form, our account manager will contact you, create your account and share the details you need.

You can pay by credit card with online invoice payment. You can also pay via PayPal, Bitcoin and SEPA.

You can cancel your virtual number at any time. You need to give 1 month's notice before canceling.

Your call packages don't expire; you can use your minutes until they run out.

Call packages are billed per second, not per minute.

You can buy an extra call package before your minutes run out to top up your package.

You can call landlines and mobiles with the minutes in your call package.

You can use the minutes in your call package anywhere with internet.

The WhatsApp Business app is a free mobile app for one person on one device. The API is built for businesses; it lets several agents reply from the same number at once, and supports automation and CRM integration.

We run the Meta business verification for you; your company documents and brand details are sent to Meta, and approval usually takes a few business days.

Yes. The API lets an unlimited number of agents reply at the same time from the Inbox panel on one number — something the regular WhatsApp Business app can't do.

Yes, marketing and notification template messages are subject to Meta approval. Approval usually takes up to 24 hours; we guide you through preparing and sending templates.

Yes. Thanks to natural language processing and an advanced text-to-speech (TTS) engine, it offers a fluent, natural conversation; your customer isn't choosing from a menu, they're talking in natural sentences.

It works with high accuracy in more than 29 languages, including Turkish. Background noise or very fast speech can affect accuracy, so we run voice tests specific to your industry to optimize the model.

There's no channel limit — it can handle hundreds of calls at once, with no lost calls or waiting at peak hours.

Yes. It can connect to your existing PBX over SIP Trunking, or be set up from scratch with a new virtual number from DIDTR.

It's handed to a live agent instantly with the conversation context; your agent doesn't start from scratch and sees the whole previous conversation.

No, there's no coding — conversation flows are designed in the panel with Flow Builder. Standard setup is completed within a few business days; preparing an industry-specific knowledge base may take longer.

PRI/E1 needs a physical line and has a fixed number of channels. SIP Trunking runs entirely over the internet, needs no physical hardware, and lets you scale channels up or down instantly.

Yes, you can port your existing number to DIDTR SIP Trunk or keep using it as it is.

Your calls are routed in 1 hop to the local carrier through the nearest PoP, giving low latency and high voice quality. HD codec (G.722) is supported.

If the T.38 protocol is supported, fax traffic can be carried over SIP Trunk; it's configured based on your PBX's fax support.

Your traffic is protected with SIP/TLS and RTP/SRTP encryption; IP whitelisting and authentication layers block unauthorized access.