By combining four ultra-broadband technologies, ADTRAN designed a gigabit-to-the-basement (GTTB) solution that extends gigabit services 650 meters from where fiber ends, empowering service providers to more rapidly and cost-effectively deliver high-speed Internet in dense urban environments.
Whereas fiber-to-the-distribution-point (FTTdp) or -building (FTTB) solutions usually add another 50 to 100 meters to fiber services, ADTRAN's GTTB offering means operators can more easily avoid expensive, time-consuming construction, said Kurt Raaflaub, head of strategic solutions marketing at ADTRAN, in an interview. That translates into implementations two to five times faster at about one tenth of the cost of FTTdp/B solutions, he said.
ADTRAN's GTTB solution incorporates technologies such as the vendor's second-generation SDX 2200 series of 212MHz, reverse-powered Gfast DPUs with bonded super-vectoring (VDSL2 35b) technology. Skip one of those elements and GTTB would not exist, Raaflaub noted.
"All these great innovations are coming in, we're just putting them in a bucket and stirring them around to make a really nice mix," he said. "Take any one of those innovations out and it just doesn't work. You have to have super vectoring. You have to have copper bonding. You have to have 212. You have to have reverse bonding."
And, if service providers add fiber at a later date, they can incorporate it into the existing GTTB solution, Raaflaub said.
Although ADTRAN declined to name any service providers currently using its GTTB offering, Raaflaub cited some "Central European" customers that are leveraging the Gfast-based solution's ability to use existing copper wire to provide customers with speedy broadband. ADTRAN customers in that region include Deutsche Telecom, which has publicly shared many of its pilots with ADTRAN involving vectoring, super vectoring and Gfast. (See DT, ADTRAN Lab Test Super-Speedy G.fast )
— Alison Diana, Editor, UBB2020. Follow us on Twitter @UBB2020 or @alisoncdiana.