Vi ho raccontato la settimana scorsa di ooma e del dispositivo VoIP che sarà in vendita da settembre negli Stati Uniti. Grazie ad una conversazione telefonica con il founder dell’azienda californiana, Alec Saunders ha qualche dettaglio in più sulla tecnologia alla base del prodotto (interesserà solo a chi è particolarmente interessato al lato tecnologico)

Let’s begin with the technology itself. The Ooma Hub and Ooma Scout are slightly different from what most of us in the VoIP world would refer to as an ATA. The Hub is a QoS enabled ethernet router, plus a media gateway, plus a HomePNA router, and an ATA. The Scout is a HomePNA ATA. For those not familiar with HomePNA, this is a 10 year old LAN technology that implements a high speed LAN (up to 240 Mb/s) on home phonelines. The important characteristic of HomePNA is that it modulates the network traffic on the phoneline outside of the audible spectrum.

The WAN technology we all know and love called DSL uses the same technique. What this means is that the phonelines in your house can simultaneously be used as phonelines and as a high speed QoS enabled LAN.

An Ooma Hub connects to your broadband, your POTS line, and and an FXS connection for you to connect a handset. The POTS connection is used simultaneously for inbound / outbound POTS calls, and to provide the HomePNA network link for the Scout. The Ooma Scout is simply an ATA with a phoneline port rather than an ethernet port. Calls made between an Ooma Scout and the Ooma Hub are VoIP calls running on the HomePNA LAN. That’s how they implement their “instant second line” feature.

Via Alec Saunders

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