The telecom lab is similar to the network lab - its main function is to provide students with equipment set up in the way a large-scale production network would be. Each row of computers in the telecom lab is on its own network, however, various WAN technologies including Frame Relay, ATM (Asynchronous Transfer Mode), and Gigabit Ethernet (1000BaseT) have been employed in this lab. In addition, two PBX switches can be configured to run a small city (approx. 10,000 lines). Students learn basic concepts of phone service from connecting lines to a 110 or 66 punch-down block, to more advanced equipment concepts such as VOIP (Voice Over IP).