y address; these addresses are used to address the virtual circuits in the network (See Figure 2). As displayed in the figure, if Router A wanted to send information to Router B it would just need to be sent to the address DLCI 38.Leased lines provide the permanent connection between nodes that communicate with each other. The LAN Times Encyclopedia of Networking establishes the fact that leased lines are guaranteed to operate at certain speeds and provide a quality service. "Leased lines are used to build private networks", where a company connects sites by using their own switching equipment (518). Conditioning is also a service provided by carriers who supply leased lines, which include repairing or replacing damaged lines.Two types of leased lines are available: analog and digital lines. Analog lines require modems to be at each end of the line. Digital lines, however, do not require any extra equipment. They have higher data transmission rates and signals are represented by 1's or 0's. Digital lines can beT1 or T3 lines. According to the Frame Relay Webopaedia Website, T1 lines can reach speeds up to 1.544 Mbps and T3 lines reach speeds up to 45 Mbps. The LAN Times Encyclopedia of Networking also states that when determining whether or not to use a leased line or not there are 4 points to take into consideration: the cost of leased lines increase with distance (may only work in certain geographical areas); may want to use leased line if two sites have four or more hours of traffic per day; leased lines are feasible if only connecting a few sites; leased lines can be used if a lot of voice and data traffic exists between two sites (920).There are other means of leased lines. Leased lines do not always have to be T1 or T3 lines. A customer can lease fiber optic cable and coaxial cable. Fiber optic cables are very fast, provide security, and noise is minimal. Fiber optic cable can reach data speeds around 1 Gbps, but th...
