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Gateway supports 802.11b/g WLANs

Posted: 01 Dec 2006 ?? ?Print Version ?Bookmark and Share

Keywords:Ikanos Communications Inc.? residential gateway? 802.11? VDSL? Fiber Fast VDSL2?

Ikanos Communications Inc. is using its Fusiv network processor chip to produce the company's first residential gateway reference design. The chipwhich Ikanos acquired from Analog Devices conjunction with the company's Fiber Fast VDSL2 transceivers supports 802.11b/g WLANs.

Fusiv's multiple processors, implemented in distributed fashion, were key in offering a multiplicity of broadband services in a single very high-bit-rate digital subscriber line 2 (VDSL) gateway, said Dean Westman, general manager of Ikanos' network products group.

The reference design uses the symmetric 100Mbps Fx100100S-5 customer premises VDSL2 chipset that Ikanos introduced earlier this year. Functions supported in the gateway include many VDSL and asymmetric-DSL standards, VoIP, Ethernet switching, Wi-Fi and Bluetooth. The embedded gateway software includes a Linux 2.6 OS as well as QoS Differentiated Services software, Session Initiation Protocol client software, a firewall, network address translation (NAT) and VoIP.

The Fusiv Vx160 offers 1.4GHz of processing power and is capable of handling 300,000 packets/second in L3 routing or NAT modes. Wi-Fi support is provided on a mini-PCI card.

A primary system board for gateway services integrates Fusiv, 8Mbytes of Flash, 32Mbytes of DDR SDRAM and a four-port Ethernet switch. The board interfaces to the Wi-Fi card, a Bluetooth module and a VoIP card.

Transceivers are at the heart of the residential gateway design.

VDSL2 services are provided on a daughter card positioned above the gateway, integrating the burst-mode engine, integrated front-end and driver of the Ikanos transceiver chipset.

Fusiv's ability to handle multicast routing aligns itself well with the IPTV capabilities of the latest version of VDSL2 silicon, said Sandeep Harpalani, director of product marketing for the gateways.

- Loring Wirbel
EE Times

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