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Sansay & Stealth Collaboration Frees VoIP from PSTNBy Erik Linask Associate Editor Traditionally businesses have had to contact their local telephone company for telephone service, limited by availability of local carriers. To make matters worse, beneficial rates have been notoriously difficult to agree. And with quality and security concerns, there is little assurance that connectivity will always be available at an acceptable level of quality.
But that is coming to an end. VoIP session control solutions from Sansay, Inc. now include the ability to interface to Stealth Communications’ VPF ENUM Registry, which, is a way for companies to communicate while circumventing the PSTN, effectively eliminating a large percentage of PSTN toll charges, resulting in potential cost savings in the billions. VPF (Voice Peering Fabric) is a distributed Layer 2 Ethernet Fabric, allowing VoIP enabled organizations to exchange VoIP traffic between one another transparently. By combining ENUM support with session control, calls can be completed on an all-IP infrastructure without sacrificing quality or post-dial delay.
The VPF ENUM Registry is a multilateral peering service that allows organizations to send and receive calls among members directly, IP end-to-end, for no termination fee — including no cost to register numbers or query the registry. The ENUM registry is based on the IETF (RFC 3761) standard, which maps telephone numbers to Internet (URL) addresses and uses a look-up architecture based on DNS.
Located in nine major U.S. cities and London — and expanding globally — Stealth’s Voice Peering Fabric (VPF) functions as an exchange point for enterprises, government agencies, and service providers to exchange VoIP traffic and telephony-related services under peer-to-peer conditions. The VPF ENUM Registry the world’s first and largest production ENUM registry, with more than 11 million phone numbers enlisted by major enterprises and carriers worldwide to map telephone numbers to SIP or H.323 addresses.
Shrihari Pandit, president & CEO of Stealth Communications, said, “ENUM is enabling hundreds of organizations to complete calls completely within the IP domain. Powerful ENUM Routing and Least Cost Routing (LCR) become essential to maximizing profitability and subscriber satisfaction.”
Sansay is the first session control solution provider to build interoperability with Stealth’s VPN into its sytem. Sansay’s vice president of product management Glen Gerhard says, “Services such as Stealth’s ENUM registry increase the percentage of calls that can be completed over all-IP infrastructures, allowing VoIP providers to become increasingly efficient and cost-competitive.” Erik Linask is Associate Editor of INTERNET TELEPHONY. Most recently, he was Managing Editor at Global Custodian, an international securities services publication. To see more of his articles, please visit Erik Linask’s columnist page.
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