T38Fax Blog

We are pleased to announce that we have successfully completed interoperability testing with Grandstream GXW4004 and GXW4008 gateways. Grandstream Networks, Inc. has offered SIP Unified Communications solutions since 2002. Their open standard SIP-based products offer broad interoperability throughout the industry and have been recognized for their quality, reliability, and innovation. The Grandstream GXW400x FXS series gateways enable businesses to create seamless office environments, integrate traditional phones and phone systems into a VoIP network, and efficiently manage communication costs. They are designed for interoperability with leading IP-PBXs, Softswitches, and most SIP-based environments.

Grandstream's 4 and 8-port GXW gateways are an affordable yet powerful choice for customers wanting to connect up to eight (8) analog fax machines to our Power-T.38 service. As with most SIP ATAs/gateways, they can connect to us directly but they can also talk to us through any SIP infrastructure that knows how to do T.38 pass-thru (Asterisk, FreePBX, OpenSIPS, Kamailio etc). The GXWs are capable of routing incoming faxes via the called number (in other words, the incoming DID), which is such a useful feature that we've broken it out into a separate knowledge base article. 

The Grandstream GXW400x FSX series gateways have been thoroughly tested by our interop ninjas and work seamlessly with our Power-T.38 Fax over IP service. We’ve gathered our screen shots and recommended best practices and assembled them into our Grandstream GXW400x FXS series Knowledge Base Articles, which you can find here:

Ready to put us to the test?

We are pleased to announce that we have successfully completed interoperability testing with FreePBX, a product of Sangoma Technologies. FreePBX is a web-based open source GUI (graphical user interface) that controls and manages Asterisk (PBX), an open source communication server. It was written by a community of developers and contributors who work to make phone system software functional and easy to use. With over 1 million production systems in over 200 countries, FreePBX is the most widely deployed open source PBX platform in use across the world. 

Fax is a chronic annoyance for FreePBX operators seeking to offer Unified Communications (UC) services to their customers, or for IT administrators looking to base their company's phone system on FreePBX. It’s a shame, too,

We are pleased to announce that we have successfully completed interoperability testing with NetSapiens. NetSapiens provides advanced VoIP solutions to the industry’s leading service providers. NetSapiens’ SnapSolution allows service providers to offer more value to their customers and increase ROI. Its solutions include hosted PBX/Web centrex, unified communications, SIP trunking, security and cost control, user portals, device provisioning, contact center solutions, geo-diversity and high availability, API, and more.

NetSapiens engineers have worked closely with T38Fax to jointly document a configuration that will permit service providers to offload their T.38 Fax over IP traffic to us. This will allow the service provider to claim T.38 support, and it will be completely transparent to their customers. To learn more, see our knowledge base article.

Both T38Fax and NetSapiens will be at ITEXPO in Ft. Lauderdale, February 8-10. If you're in the area, feel free to come and discuss our joint solution. We are even offering free Expo Plus Passes! For more information on NetSapiens and their VoIP solutions, visit their website.

Don't have a T38Fax account?

We are pleased to announce that we have successfully completed interoperability testing with Fax Voip T38 Fax & Voice software. Fax Voip is a Windows based software that provides a full-featured SIP/H.323 softphone for Voice over IP (VoIP) calling. It also provides full functionality for sending & receiving facsimile transmissions via T.38 & G.711. From the perspective of your fax or voice application, it acts as a Voice/Fax modem, installing Virtual COM Ports and Virtual Fax Voip 14.4k TAPI Voice-Fax modems on your system. You can configure your Fax & Voice program to operate with both the Fax Voip COM ports or virtual modems. From the perspective of your VoIP network, it provides a fully featured SIP/H.323 client with support for faxing over VoIP trunks, both in G.711 and T.38 (and more importantly, with Error Correction Mode - ECM!).

Fax Voip's software passed our rigorous testing requirements and made it to our Certified Device List. We’ve included a simple configuration guide on our website to help you get up and running.

Join us at ITEXPO East in Fort Lauderdale, FL from Feburary 8-10, 2017, to meet our Sales and Engineering team and learn more about our ability to provide premium fax-optimized SIP trunks. T38Fax Incorporated will be a Gold Sponsor at this year’s ITEXPO, the industry-leading business technology event. We will also be a Platinum Sponsor of Digium Asterisk World, which will be held within ITEXPO.

The OBi2xx Series Universal VoIP Adapters are targeted at Internet phone service providers world-wide. Their innovation and sophistication in the areas of speech technology, voice traffic prioritization, call management and ease of set-up are catalysts that ignite excitement among consumer and small business users who want the best product for their VoIP communication needs. In addition to its impressive list of voice features, the OBi2xx series also supports T.38, an essential feature to ensure reliable faxing over SIP trunks.

We are pleased to announce that we have successfully completed interoperability testing with Obihai’s OBi5vs Series Universal VoIP Adapters. The OBi504 and OBi508 were each subjected to rigorous torture testing in our labs, and performed flawlessly. We found them to provide the stability, service, and reliability that our customers have come to expect.