UK outfit Fluidata has launched a business ADSL service that claims to deliver download speeds of up to 40Mbit/sec, and uploads of up to 20Mbit/s.

Dubbed 'PureFluid Burst', the system uses ADSL2+ technology and a method of bonding or aggregating two or more DSL lines, which can be from different suppliers, according to the company. Most bonding systems use identical copper pairs. Bonding offers the benefit of resilience should one supplier have contention issues or one of the lines goes down, as well as higher throughput.

The service is aimed at businesses wanting leased line style service but where high-speed bandwidth is either expensive or impossible to obtain. An example given by managing director Piers Daniell was of an investment company with 40 employees that moved from London to a rural location. The company was quoted £64,000 installation costs by its existing broadband service provider, according to Daniell, who said that Fluidata was able to supply a service for £3,000 upfront and £600 pcm.

Central to the PureFluid service is an aggregation server in Fluidata's data centre, which is linked via the company's fibre backhaul network to 160 exchanges across the UK. The customer's connection to the exchange consists of the company's ADSL2+ Burst service - using a variant on the standard technology - combined with one or more SDSL lines connected via an unbundled local loop.

C&W and Telefonica are the main LLU carriers that Fluidata uses, said Daniell. "BT is about four years behind the curve."

The CPE consists of a Linux-based aggregation server, managed by Fluidata, which acts as a switch to balance out the traffic on the lines. This is hooked into DSL router/modems, one for each incoming line. It's presented to the end user's network as an Ethernet connection.

"We've currently got over 1,000 customers," said Daniell. "We're not about high volumes but service. We can offer one-to-one contention if requested, so we're competitive with leased lines."

According to the company, there are currently over 1,000 POPs enabled, and it can offer a full speed service at up to 2km from the exchange.

Daniell said that, while most customers were smaller enterprises, one NHS primary care trust was also using the service.

In future, Fluidata would look to provide a similar aggregated service using WiMax as one of the data channels. "we expect to roll this out in March'", said Daniell.