The ttymon port monitor is STREAMS-based and does the following:
Sets terminal modes, baud rates, and line disciplines
Invokes the login process
The ttymon port monitor provides users the same services that the getty port monitor did under previous versions of SunOS 4.1 software.
The ttymon port monitor runs under the SAC program and is configured with the sacadm command. Each instance of ttymon can monitor multiple ports. These ports are specified in the port monitor's administrative file. The administrative file is configured by using the pmadm and ttyadm commands.