FreeSWITCH Telephony Development

Custom Telephony

Izeni specializes in custom FreeSWITCH programming and configuration to integrate soft-switch functionality into a variety of business applications. With nearly 10 years of custom telephony experience, we can help you find the right strategy for introducing voice/telephony into your products and services.

The Value of Experience

Samples of our work include several highly-customized call centers, complete with dialers, IVRs, voicemail, calling queues, and rich desktop clients. Izeni has also created an LDAP-based PBX solution with automated endpoint provisioning and a SIP-based load tester capable of running thousands of concurrent sessions for stress-testing Asterisk and other general purpose VoIP servers.

Fast and Affordable

Izeni sponsors the development of ParselTONE, an Open Source framework for building custom voice-enabled products based on FreeSWITCH and Python. By leveraging the ParselTONE Telephony Framework, Izeni is able to develop voice applications more rapidly and affordably than otherwise possible. ParselTONE, like FreeSWITCH itself, is released under the business-friendly Mozilla Public License (MPL), so we can develop your proprietary code on top of ParselTONE without any ownership or licensing concerns.

Izeni has also made several contributions to the FreeSWITCH project in the form of paid bounties for new features that enhance the code base and benefit everyone who uses FreeSWITCH. Our experiences with the bounty process have been so positive that we’ll almost certainly be sponsoring future bounties as well.

Many telephony solutions are more popular than FreeSWITCH, but none are more powerful, flexible or configurable. A few of the reasons we prefer FreeSWITCH over the alternatives include its ability to be dynamically configured and controlled via HTTP, its business-friendly license, and its smart reuse of other popular Open Source code bases such as Nokia’s Sofia SIP stack and the Apache Portable Runtime project. We also like FreeSWITCH’s powerful event engine and the fact that it runs on all major operating systems.

Perhaps the most compelling reason we choose FreeSWITCH is its architecture; it was built from the ground up as a soft-switch (not a PBX), and design decisions were made with the benefit of lessons learned at other Open Source telephony projects.

For most productized telephony integrations, FreeSWITCH is the obvious choice. Izeni’s custom-built FreeSWITCH applications have made millions of calls, and our clients love the performance, scalability, and flexibility FreeSWITCH brings to their products.

About FreeSWITCH

FreeSWITCH’s modular architecture provides a development platform for a broad range of telephony applications, from softphones and PBXs to soft-switches. FreeSWITCH supports Skype, SIP, GoogleTalk, TDM and other popular communication technologies. Common implementations include rating and routing servers, conference servers, voicemail servers, IVR and announcement servers, SBCs, and fax servers.