Phase II (1975) Support for networks of up to 32 nodes with multiple, different implementations which could inter-operate with each other. Implementations expanded to include RSTS, TOPS-10, TOPS-20 and VAX/VMS with communications between processors still limited to point-to-point links only. Introduction of downline loading (MOP), and file transfer using File Access Listener (FAL), remote file access using Data Access Protocol (DAP), task-to-task programming interfaces and network management features.
phase ii (1975) support for networks of up to 32 nodes with multiple different implementations which could inter-operate with each other implementations expanded to include rsts tops-10 tops-20 and vax/vms with communications between processors still limited to point-to-point links only introduction of downline loading (mop) and file transfer using file access listener (fal) remote file access using data access protocol (dap) task-to-task programming interfaces and network management features