Labels:book | daily | earth | hakham | reckoner | rock | sky OCR: 3 1 4 SECTION CHAPTER 6 DSL ISDN, AND DEDICATED LINES What are the options for transporting digital data over tele- phone lines? Although the standard equipment provided bv telephone companies limits the amount of data you can transmit and receive over a voiceband modem, the telephone system's copper wire has fair amount of capacity. Several services, such as dedicated lines, ISDN and DSL take advantage of this capacity to offer high-speed digital communica ations links for voice and data What is dedicated line? T1 T3 and T4 services are high-capacity dedicated lines that can be leased from the telephone company and are you shared by other customers. Speed ranges from .544 Mbps to 274 Mbps. These high-speed services are usually too expensive for individuals but are leased by corporations a ...
