Troubleshooting PPP
If you are having trouble getting PPP to work, here are a few suggestions for troubleshooting.
If the modem doesn’t dial:
Verify that you have selected the correct device for your modem. Remember that FreeBSD uses /dev/cuad # for its device names, not /dev/cuaa # as on some other systems.
If you are using an older system, try reducing the speed to 57600 or 38400. Some older systems without high-speed UARTs cannot handle 115200.
Verify your chat script or set dial line. Check your modem documentation to see whether you need to be sending it some initialization string other than the default one in the FreeBSD configuration files.
If the modem dials but fails to establish a connection:
Verify that you are using the correct authentication ...
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