German and Portuguese versions

We know that despite use of wide-spread English as IT default language some of our customers prefer reading our website in their native language. To meet their needs we created German and Portuguese versions of To read content in your … READ MORE

Be first to comment

We always appreciate your feedback and reaction on our product and other changes. How you can let us know about your experience with our products: Contact us; Open a Ticket; Comment on our posts in Facebook and other social media; … READ MORE

Happy Easter!

Dear partners and visitors, We are wishing you a very Happy Easter that is filled with plenty of love and happiness. Thank you for your cooperation in improving and development of our VoIP products. We hope to continue supporting your … READ MORE


We often receive the following questions about our ABTO Software’s VoIP SIP SDK for Windows: is it implemented as native SIP DLL SDK or as ActiveX (COM) object. how to integrate SDK into own application. The answer is that VoIP … READ MORE

SIP ZRTP client

ABTO Software’s VoIP SIP SDK is proud to present a new feature – ZRTP support for mobile platforms: iOS and Android.Using our SDK you are able to build custom sip zrtp client for iOS and Android. Currently realization allows ZRTP … READ MORE