I Figure 6-7: Local Loop Technologies echnology Use Status 1-Pair Voice-Grade Residences Already installed UTP 2-Pair Data-Grade Businesses for Must be pulled to the UTP LoWest-speed customer premises access lines (this is expensive) Optical Fiber Businesses for Must be pulled to the higher-speed customer premises access lines (this is expensive Residential 1-pair voice-grade UTP is already installed This makes it inexpensive to use Business 2-pair data-grade UTP and fiber for leased lines must be installed; this is expensive 6-146-14 Figure 6-7: Local Loop Technologies Technology Use Status 1-Pair Voice-Grade UTP Residences Already installed 2-Pair Data-Grade UTP Businesses for Lowest-speed access lines Must be pulled to the customer premises (this is expensive) Optical Fiber Businesses for higher-speed access lines Must be pulled to the customer premises (this is expensive) Residential 1-pair voice-grade UTP is already installed. This makes it inexpensive to use Business 2-pair data-grade UTP and fiber for leased lines must be installed; this is expensive