In areas where AT&T deploys U-verse through FTTN, they use High-speed digital subscriber lines with ADSL2+ or VDSL technology. Service offerings depend on the customer's distance to an available port in the distribution node, or the central office. To qualify for U-verse TV service (only available through VDSL2), the customer must be less than 3500 feet (1000 meters) from a VRAD, the VRAD must contain an available port, and the copper wire-loop must pass qualification. Where pair bonding is available, the maximum service distance can extend to 5500 feet (1600 meters).