Mark Donahue Mark Donahue is an associate editor for Telephony magazine. Previously, he worked in The Associated Press’ Chicago bureau, as well as two trade publications. He graduated from...more

Voxbone’s iNum Service Speaks in High Definition With Skype

Voxbone Logo   

In-the-Room Sound Quality Available to Millions More

As Voxbone Adds Support for Skype’s SILK Wideband Audio Codec

AMSTERDAM, Netherlands – Oct. 28, 2009Voxbone, provider of international VoIP origination services and telephone numbers, today announced that its geographically-independent number service, iNum®, now supports high-definition (HD) calling between dozens of VoIP networks and Skype, the global leader in Internet communications. 

Greatly expanding availability of emerging HD voice technology, Voxbone will transcode, or translate, between Skype’s super-wideband SILK codec and the widely deployed HD codec, G.722, Voxbone announced at eComm Europe 2009.  

Prefaced with the ITU-assigned 883 code, iNum numbers refer to the Internet as the 44 country code refers to the U.K. Calls to iNum numbers are routed first to Voxbone, which delivers them to the appropriate service provider over IP. 

“With iNum supplying the needed uniform identifier across all providers, our support for Skype’s SILK codec kicks high-definition voice into higher gear,” said Tim Behrsin, Voxbone’s business development manager for iNum. “Suddenly, those among Skype’s 480 million registered users who have the latest version of Skype for Windows or Mac* can experience HD quality not only in conversations with one another but also when they call most of the world’s other HD-capable endpoints. As we support more codecs, we expect to advance this benefit until HD becomes the sound quality standard for VoIP and eventually all telephony.”

Because iNum numbers can be dialed from PSTN phones as well as IP endpoints, Voxbone’s move enables conference calls with attendees on conventional phones, who will hear within the PSTN’s audio constraints, and others with high-definition IP endpoints, who will enjoy the richer sound of HD calling.

“Partnering with Voxbone logically follows our decision in March to make the SILK codec freely available,” said Jonathan Christensen, Skype’s general manager for audio and video. “Voxbone’s support for SILK is a great endorsement and will enable many providers to offer SILK sound quality without making infrastructure changes.” 

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About Voxbone

Headquartered in Brussels, Belgium, Voxbone provides worldwide local and toll-free phone numbers over its own private intercontinental VoIP network. The all-IP architecture of the Voxbone core network enables customers to rapidly deploy new communications services with local presence while reducing costs. It delivers high-quality call origination from 49 countries and 4,000 cities, as well as iNum numbers that enable billing as local calls when dialed through participating carriers anywhere in the world. Through its number inventory, network, self-administered provisioning and comprehensive SIP adherence, Voxbone’s global infrastructure enables its customers to expand to international markets quickly and efficiently. Founded in 2002 and privately held, Voxbone is the only carrier licensed in all 27 countries of the European Union. For more information, visit

About Skype

Skype is software that enables the world’s conversations. Millions of individuals and businesses use Skype to make free video and voice calls send instant messages and share files with other Skype users. Everyday, people everywhere also use Skype to make low-cost calls to landlines and mobiles. Download Skype to your computer or mobile phone at Skype is an eBay company (NASDAQ: EBAY).

Access to a broadband Internet connection is required. Skype is not a replacement for your traditional telephone service and cannot be used for emergency calling. 

Skype, associated trademarks and logos and the “S” symbol are trademarks of Skype Limited.

* Skype for Windows version 4.0 or higher, or Skype for Mac version 2.8 or higher.

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