T38Fax Blog

FusionPBX Officially Certified

Posted by Dana Meltzer on Feb 20, 2018 2:51:30 PM

fusionpbx-certified.pngWe’re excited to announce that we've successfully completed interoperability testing with FusionPBX, a popular web front-end to FreeSWITCH, the legendary cross-platform scalable (and free) multi-protocol softswitch. 

In simple terms, FusionPBX is to FreeSwitch as FreePBX is to Asterisk - in other words it’s FreeSWITCH for mere mortals. FreeSWITCH is a powerful and scalable voice switch used by many of the world’s leading telecommunications service providers and a large percentage of businesses worldwide, but it has a pretty steep learning curve and can take weeks, if not months to master. 

FusionPBX adds extra functionality to the FreeSwitch platform while making it easy to administer via an attractive and powerful GUI interface for users and tenants. It can run in varied hardware and software environments, offering the versatility that all businesses require and, in particular, delivering corporate-level phone features to smaller businesses. The impressive list of FusionPBX features includes: unlimited extensions, voicemail-to-email, music on hold, call parking, call center, call queues, phone provisioning and many other features over SIP trunks, T1/E1 (ISDN) circuits and even those old-fashioned analog lines that still lurk in the telco closet. It also happens to be an Open Source project with a large global community of contributors!

FusionPBX includes a completely native, fully integrated fax server that supports T.38 and can be used to send and receive faxes directly. It can also mediate SIP calls in passthrough mode, where it bridges the connection between some T.38-compatible endpoint (such as an ATA) and the upstream carrier and basically just shuttles T.38 messages back and forth without interfering. As always, the challenge to achieving successful Fax over IP (FoIP) is finding a SIP trunk vendor that offers reliable T.38. Luckily, faxing over our Power-T.38 SIP trunks is just as reliable as doing it over traditional (TDM or POTS) phone lines. Simply activate service with us, connect our SIP trunks to your FusionPBX server, and see how well the faxing works for yourself!

FusionPBX has been thoroughly tested by our support engineers and has been proven to work seamlessly with our Power-T.38 service. We’ve gathered screen shots and recommended best practices and assembled them into our FusionPBX Knowledge Base Article, which you can find here:

FusionPBX Knowledge Base Article

Ready to put us to the test?


Take advantage of our 30-day free trial offer right now and you can be up and running in minutes. We offer instant activation via our online signup form. We even load your account with a $25 calling credit, which should more than cover all of the testing you’ll want to do. What’s more, we back those free trials up with unlimited free technical support so you’ll be able to take our support team for a spin, too. Finally, we promise we will never activate your trial to a production account without you asking us to do so – we hate it when people do that to us too!


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Topics: Blog, Interoperability

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