Mobile Development

Mobile Development

VoIP on Mobile

Mobile devices become more and more popular nowadays and they went through so great improvement that they can be used as handheld computer systems. This improvement ensures that the voice over IP model has the possibility to spread on these devices, too.
Ozeki VoIP SIP SDK gives you the opportunity to exploit VoIP technology with mobile platforms: How to connect mobile devices to a VoIP network when you use Ozeki SIP SDK.


Android is a Linux-based operating system designed for mobile devices such as smartphones and tablet computers. It is constantly extended with new applications (apps). These apps are written primarily in a customized version of Java. Applications can be downloaded from third-party sites or via online stores such as Google Play (formerly Android Market) that is the app store run by Google.
When you use Ozeki SIP SDK, you can easily build VoIP clients for Android: How to build an Android VoIP client with Ozeki SIP SDK.

Apple (iPhone/iPad)

Apple Inc. is an American multinational corporation that is involved in designing and selling consumer electronics, computer software, and personal computers. The hardware products such as the Macintosh line of computers, the iPod, the iPhone and the iPad are well-known worldwide. Apple rules the second greatest part of the mobile market after Google Android. How to build an iPhone / iPad VoIP client with Ozeki SIP SDK.

Windows Phone

Windows Phone is a mobile operating system that has been developed by Microsoft. It is the successor of Windows Mobile Platform but they are not compatible with each other. Windows Phone is mainly designed to the consumer market. With this operating system, a new user interface has been created, featuring its design language called Metro. It can easily be integrated with third party services and Microsoft services. It sets minimum requirements for the hardware on which it runs. How to build VoIP app for Windows Phone with Ozeki SIP SDK.

Android Mobile Development

  • Mobile to mobile VoIP calls
  • Mobile to web voice calls
  • Mobile to web video calls
  • Mobile to SIP voice calls
  • VoIP conference calls on Android

Apple Mobile Development

  • Mobile to mobile VoIP calls
  • Mobile to web voice calls
  • Mobile to web video calls
  • Mobile to SIP voice calls
  • VoIP conference calls on Apple devices

Windows Phone Options

Windows Phone 7 (WP7) is an operating system developed by Microsoft. It addresses content organization and different UX in a new way, based on the Metro design language and principles that will be incorporated into Windows 8. WP7 also aims other markets than its predecessors. WP7 has been designed for people with a busy life who use social networks every day instead of business and technology workers.
Ozeki VoIP SIP SDK ensures revolutionary technology to develop VoIP applications for Windows Phone 7: VoIP application for Windows Phone 7 with Ozeki VoIP SIP SDK.

Social Media integration

Social media includes web-based and mobile based technologies which are used to turn communication into interactive dialogue between organizations, communities, and individuals. It is a dynamically improving territory of communication that cannot be ignored in mobile VoIP communication.
Ozeki SIP SDK gives you the opportunity to exploit social media by adding VoIP technology to it: How to make Facebook to SIP calls with Ozeki SIP SDK.

Get Started

Select an Ozeki SIP SDK license
Ozeki VoIP SIP SDKs licensing is based on the number of the simultaneous calls you wish to handle. More...

Install Ozeki SIP SDK
Ozeki VoIP SIP SDK is simple to install. Follow the basic steps to have a great background support for your VoIP solutions in minutes.

  • Download Ozeki VoIP SDK
  • Start the installer program
  • Select the target folder
  • Wait until the installation process finishes

Start with an example application
Ozeki VoIP SIP SDK comes with a lot of example programs, all of which have online documentation. If you are new to mobile programming, you can start with a guide about mobile development.

Ask our engineers if you have questions
If you have any question, send us an e-mail at