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Linux smartphone maker picks soft-DSP VoIP stack

Mar 20, 2007 — by LinuxDevices Staff — from the LinuxDevices Archive — 3 views

D2 Technologies says its software-only VoIP (voice-over-IP) signal processing stack has been adopted by E28, a Linux smartphone pioneer based in China. E28 plans to use D2's “vPort” embedded VoIP engine software in a new line of dual-mode smartphones featuring “fixed mobile convergence” (FMC) capabilities, according to the companies.

E28 helped pioneer the Linux smartphone market, and currently offers several dual-mode models. Along with Bridgeport Networks, it demonstrated one of the first FMC offerings to reach market.

E28's next-generation FMC phones are based on TI OMAP processors that combine ARM9 application and ARM7 signal processors in a single chip. D2 says its vPort software runs on the application processor, providing soft DSP (digital signal processing) voice algorithm processing and protocol signaling functions that enable WiFi VoIP capability. The stack supports multiple services, including SIP-based VoIP and VoIM (PC-based IM/P2P voice such as Skype, GoogleTalk, Yahoo!, and MSN), D2 said.

D2 offers vPort in several versions targeting various product types:

  • vPort MP — WiFi (VoWLAN) and dual-mode mobile phones
  • vPort GW — CPE gateways, ATA/router/IAD and triple-play devices
  • vPort IPP — IP desktop phones and speakerphones
  • vPort CP — cordless VoIP/VoIM phones

Doug Makishima, VP of marketing at D2, stated, “With the rapid adoption of VoWLAN in the enterprise, WiFi hotspots, and the home, OEMs and mobile operators are looking to quickly deliver integrated dual-mode handsets.”

The companies are demonstrating their respective products at the Spring VON show this week in San Jose, Calif. Pricing and availability were not disclosed.

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