... (OSI-RM)2.1.1.2.1.2.2.1.3.2.1.4.2.1.5.OSI-RM Characteristics and TerminologyCommunications Model within an OSI NodeCommunications Across the OSI NetworkInter-layer communication OSI-RM Layer Definitions and Functions2.2.The ... that the electronic communication systems startedas data communication systems, much of their advancement has been in thefield of voice. For decades, the Public Switched TelecommunicationsNetwork ... NetworksThere is a myriad of terms used to describe a computercommunications network. Computer Networks, Networks,Communications Networks, Telecommunications Networks, PacketSwitched Networks, Networking...