Start-up VxTel Inc. is taking a swing at industry giant Texas Instruments Inc. by introducing a new DSP architecture targeted at packetized communications applications.
At the Voice on the Net Conference in Atlanta next week, VxTel will make its debut with the introduction of the VX-SP1000, which it says can deliver up to 12 times the channel density of existing DSP-based alternatives in voice-over-Internet Protocol (VoIP) applications.
Each VX-SP1000 can process up to 240 G.7111 uncompressed channels, or 120 G.729A compressed channels, said Vijay Parmar, vice president of marketing at VxTel in Irvine, Calif. Each channel includes echo cancellation and key telephony functionality such as comfort-noise generation, voice-activity detection, and DTMF tone detection and generation.
"We enable carrier-class equipment vendors to design boards with more than 2,000 channels for OC-3 on a CompactPCI card," Parmar said. "With this complete voice-over-packet solution, customers don't have to integrate real-time operating systems, silicon, and voice protocols. They can focus on their own proprietary value-added."
Target applications for VxTel include carrier-class voice over packet such as voice-over-IP, voice-over-ATM, and voice-over-frame-relay gateways and classless switches, as well as VoDSL and voice-over-cable gateways, wireless base stations, and IP PBXs.
"We're ultimately targeting the build-out of converged networks, which by definition will be packetized," said Shri Dodani, president and chief executive of VxTel. "Our voice processor enables carrier-class equipment vendors to deliver next-generation advanced gateways and switches that require hundreds of thousands of channels."
Founded in March 1999, VxTel has received $16.4 million in funding from Sequoia Capital and TeleSoft Partners.
In addition to Dodani, who most recently served as vice president of engineering at Carrier Access Corp., the VxTel board includes chairman S. Atiq Raza, who previously served as president and chief operating officer of Advanced Micro Devices Inc. and chairman, president, and chief executive of NexGen Corp., and Kumar Ganapathy, chief technical officer, a former engineering fellow at Conexant Systems Inc.
Aside from its Irvine headquarters, VxTel operates development centers in Boulder, Colo., and Bangalore, India.
"We're going to provide the silicon solutions that form the foundation for the next-generation networks," Parmar said. "We have already designed two fundamental pieces of the backbone-the signal processor [VX-SP1000]-and the second is a packet processor to be introduced in the first quarter of next year."
The VX-SP1000 integrates the hardware, software, and firmware that network-equipment vendors require, Parmar said. The DSP is a single-instruction multiple-data (SIMD)-style architecture operating at 166 MHz, integrating four DSP processor cores, as well as memory, interfaces, clocks, and a 32-bit MIPS-based microprocessor.
The VX-SP1000 integrates optimized voice-processing firmware for industry-standard voice codecs, including G.711, G.729A, G.723.1, G.726, full-fax support, and software for echo cancellation. The device also supports fax/data tone detection and forwarding, silence suppression, DTMF detection and generation, and jitter-buffer regulation.
"The ballooning market for IP-telephony gateways is forcing the need for higher voice-channel densities with ever-lower power consumption per channel," said Will Strauss, an analyst at Forward Concepts Co., Tempe, Ariz. "VxTel has addressed these issues with their unique voice-signal-processor architecture, which will merit strong consideration for new system designs."
The VX-SP1000 is sampling, with production slated for later this year. In a 17-sq.-mm, 256-ball plastic BGA package, the device is $650 in quantities of 1,000.
By year's end, VxTel will introduce its second-generation voice-signal-processor, which integrates six processing cores operating at 400 MHz, Parmar said. VxTel currently has commitments from seven customers, and is working with an additional 15, he added.