... transmission and the mobility of most wireless systems give rise to a Wireless Networks121 Introduction to Wireless NetworksAlthough it has history of more than a century, wireless transmission has found ... connected to the BSand relayed voice calls to it. In order to place a call from a fixed phone to an MTS terminal,the caller first called a special number to connect to an MTS operator. The caller ... the other, or symmetric with a Introduction to Wireless Networks 211.1.6 Fixed Wireless LinksContrary to the wireless systems presented so far (and later on), fixed wireless systems lackthe capability...