The SAF is the tool used for administering terminals, modems, and other network devices. In particular, SAF enables you to set up:
ttymon and listen port monitors (using the sacadm command)
ttymon port monitor services (using the pmadm and ttyadm commands)
listen port monitor services (using the pmadm and nlsadmin commands)
And troubleshoot tty devices
And troubleshoot incoming network requests for printing service
And troubleshoot the Service Access Controller (using the sacadm command)
The SAF is an open-systems solution that controls access to system and network resources through tty devices and local-area networks (LANs). SAF is not a program. It is a hierarchy of background processes and administrative commands.