Spitfire, a business ISP and Internet telephony provider, has launched its new PureStream™ SDSL (symmetric) broadband service. The package combines a 2Mbps uncontended LLUStream (unbundled) SDSL (inc. Service Level Guarantees) with a 2Mbps uncontended SDSL(M) [This is actually a Tiscali based ADSL2+ service] as a backup circuit.


It's noted that IP configuration is the same on each circuit, allowing users to transfer between the circuits when required. SDSL is distinguished from the more usual ADSL by providing the equivalent bandwidth for both upstream and downstream traffic to and from the ISP.