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CallbackButton is an excellent software that serves as an intelligent replacement to the standard 0800 service number. Typically, a call to an 0800 number incurs substantial costs, including dispatching fees from the federal net agency, monthly basic charges from telecommunication companies, and hefty connection fees. However, with CallbackButton, users can avoid all these charges as it comes with no basic charges, and no setup fees - users only incur minimal connecting costs that are far less than the total costs associated with using an 0800 number.

Moreover, CallbackButton isn't just an alternative to 0800 numbers; it offers additional benefits for website owners. It's easy to set up and use. Plus, users can make announcements, insert new data, and personalize the user experience to meet their needs. In fact, users can test the software for free before committing to it.

Other impressive features of CallbackButton include simple and fast installation, the ability to restrict connections to specific phone numbers, customizable opening times, and cost control through SiPHome Prepaid and single-connection proof. Additionally, CallbackButton allows users to tailor the software to their website's layout using a stylesheet file, while also supporting multiple languages such as German and English.

Finally, CallbackButton enables users to define their own telephone number and SIP-IAX address as a goal call number. For programmers, an Application Programming Interface (API) exists for integrating the software with other programs, giving greater control over communication channels. Overall, CallbackButton is an intuitive and cost-effective solution for website owners looking to enhance their communication options.