Click-to-Call
Start calls directly from your application - ideal for CRM, support tools or automated workflows.
VoIP API Developer Portal
VoIP API portal: REST, webhooks and CDR for daily telephony integration
Our VoIP API enables developers to integrate telephony functions directly into their own applications - quickly, flexibly and scalably. You can use REST, webhooks and CDR data to control calls, monitor events and automate processes without complex infrastructure.
Compatible with: SAP, Salesforce, Microsoft Dynamics 365, HubSpot, Zoho CRM, Oracle NetSuite & Open Source: Odoo, ERPNext, Dolibarr - and many more!
In this VoIP API Developer Portal, you talk to the platform via HTTPS (REST): requests and responses are structured and intended for typical integration scenarios in CRM or ticket systems. Webhooks deliver events to URLs you have stored so that your backend does not have to constantly query the status. CDR data summarizes call metadata for evaluation and billing and supplements the view that you already know from telephony.
The Basic, Pro and Enterprise packages differ mainly according to the monthly quota for webhook deliveries and the support level; the maps below list the specific figures. As with DUStel without API, minutes, SMS and other telephony charges are billed additionally - the VoIP API controls functions and events, but does not replace any connection or network costs.
Webhooks
Real-time notifications for incoming calls, call events, routing decisions and status changes.
CDR tracking
Full access to call detail records for reporting, analysis and billing.
DTMF / IVR control
Creation of individual voice menus, queries and dialog systems - completely configurable via API.
RTCM Features
Forwarding out of the telephone call, muting, recording the telephone call (distance selling contract)
High security
TLS-encrypted endpoints, token-based authentication, IP whitelisting.
DUSapi
Basic
€ 19per month, plus VAT*.
- 500 Deliveries incl. Webhook deliveries per month, thereafter € 0.01 per delivery
- 7 event types Call Events, DTMF & Recording
- Unlimited webhooks As many URLs as required
- RTCM Features Call transfer, mute, recording
- OAuth 2.0 Secure token-based Auth
- Basic Support within 24 hours
DUSapi
Pro
most ordered
€ 49per month, plus VAT*.
- 5,000 deliveries incl. Webhook deliveries per month, thereafter € 0.008 per delivery
- 7 event types Call Events, DTMF & Recording
- Unlimited webhooks As many URLs as required
- RTCM Features Call transfer, mute, recording
- OAuth 2.0 Secure token-based Auth
- Priority Support Preferred processing
DUSapi
Enterprise
€ 149per month, plus VAT*.
- 50,000 deliveries incl. Webhook deliveries per month, thereafter € 0.005 per delivery
- 7 event types Call Events, DTMF & Recording
- Unlimited webhooks As many URLs as required
- RTCM Features Call transfer, mute, recording
- OAuth 2.0 Secure token-based Auth
- SLA & Premium Support Guaranteed response time
* Telephony costs (minutes, SMS) are additional. The API only enables integration - not the telephony itself.
Ready to get started?
Contact our support team to activate the VoIP API. We will help you set it up and answer all your questions.
API documentation
Comprehensive documentation helps you to implement your projects. However, should you get stuck, we will provide you with reliable, competent and, depending on the selected service level, fast support.