Even though a variety of modem types is available, most modems are shipped with the correct settings for Solaris PPP 4.0. The following list shows the basic parameter settings for modems that use Solaris PPP 4.0.
DCD – Follow carrier instructions
DTR – Set low so that the modem hangs up and puts the modem on-hook
Flow Control – Set to RTS/CTS for full-duplex hardware flow control
Attention Sequences – Disable
If you have problems setting up the link and suspect that the modem is at fault, first consult the modem manufacturer's documentation. Also, a number of web sites offer help with modem programming. Finally, you can find some suggestions for clearing modem problems in How to Diagnose Modem Problems.
For more information, see Using Your Assigned Administrative Rights in Securing Users and Processes in Oracle Solaris 11.2 .