... 23, 19 95, when it was removed from Crawford, Scotland. Strowger sold his patents to his associates for $1, 800 in 18 96 and sold his share in the company for $10 ,000 in 18 98. He died in 19 02. ... location. PLMNs make much use of non-circuit-related signaling, particularly to keep track of roaming subscribers. Chapter 13 , "GSM and ANSI- 41 Mobile Application Part (MAP)," covers this ... two terminal jacks on the switchboard. Figure 1- 1 shows this process; on the switchboard, each terminal jack represents a subscriber. Figure 1- 1 . Simple Call Setup Via a Manual Operator with...