Guest Editorial

Paul Roth The basic elements of communication-computer networks are terminal devices and stations; transmission media; and switching. With the rapid growth of computer technology, telecommunication networks (e.g., telephone network) have evolved from analog to digital. With digital switching, transmission, and transceiver devices progressing in the order, such networks have become end-to-end digital networks. Data communication or computer networks (e.g., ARPAnet), which are inherently digital, allow users to share local and remote computing and information