serial communications

[OSCAR VAN.DER.MEER]

My experience with Unix is very supervisual. Most programming work I've
done so far has been on DOS machines. I might be using Unix (on a 386
machine) for an upcoming project though. The project will involve a lot
of serial communication by modem. That is why I like find out more about
serial communications under Unix. I could not locate much usefull
information about the subject in the Unix manuals, but that is probably
my fault.

I want to know how serial communications works from a software (i.e. C)
perspective, how much control the program has over the serial port
(modem status lines on RS-232 for instance) and how much support I get
from standard Unix libraries/utilities for serial communications.
 
Anybody who can point me in the wright direction, or who can tell me
where I should look, for information regarding the subject, please do
so.
 
Oscar van der Meer
UUCP:omeer at neabbs.nl