Serial modem connection on RedHat 6.2

[David Woo]

I need to be able to login to my Linux box remotely by an attached
modem.  Rather than establish a PPP connection into the Linux box, I
would just like a serial (non-PPP) connection that prompts me for my
login and drops me to a Linux bash command line prompt.

After making this connection, I could then rz/sz files to/from the other
Unix box I'm calling from to the Linux box.  I've tried searching the
HOW-to's - but I'm not finding the right answers.

Anyone know how to do this?

Thanks in advance.