Sangoma Introduces the Highest Density Voice Transcoding Card Available on the Market Today

New D500 Card Delivers Up to 2,000 Simultaneous Transcoding Sessions With Optimum Voice Quality and Industry Leading Cost for IP Telephony/VOIP Applications

The D500 is both standalone and accessible via IP networks. This means it can be installed in the same server where your telecom applications run or it can be pooled in dedicated transcoding server farms for maximum deployment flexibility. Either way, the voice transcoding processing is performed on the card, freeing up the host CPU to do other tasks. Most IP telephony applications require the use of multiple types of voice codecs, which are used to digitally compress the voice signals. This can be done to save bandwidth by using G.729 codecs or to enhance the voice signal by using HD codecs (such as G.722.1). As more and more VoIP networks get deployed and interconnected, there are instances where there will be mismatches of codec capabilities between two endpoints, creating the need to transcode (mediate and adapt between various codecs).
The D500 card, available in a compact PCIe form factor, offers developers and integrators the ability to convert up to 2,000 sessions on a single board and supports a long list of codecs such as G.711, G.723.1, G.729ab, HD Voice (G.722.1) GSM and AMR. Moreover, these codecs are generally indemnified, meaning there are no additional costs other than the price of the D500 hardware.
The new transcoding portfolio from Sangoma is used on both open source and proprietary applications. In the open source world, the D500 software drivers (like those of Sangoma’s other transcoding cards), provide “plug-and-play” capabilities for both Asterisk┬« and FreeSWITCH┬«, two leading open source telephony projects. With the compatible drivers, the open source telephony platforms can use the D500 cards as seamless voice transcoding resources. This means that existing Asterisk and FreeSWITCH applications can readily start leveraging the D500 capabilities. Further, the open source telephony software can be used as a gateway or session border controller to provide network-based transcoding services.