cu problems

[Wolfson]

Recently, I posted a problem I was having with the cu command 
failing. Since then, I have received many suggestions on
how to solve the problem. The problem has been solved, and thanks
to everyone who provided help. I tried virtually every
suggestion, or combination, thereof, and here is what finally
worked:

1) Set up through Hardware Preferences window to use
line 1 for voice and line 2 for data. Then, connected
the phone jack to line 2, and left line 1 disconnected.
Previously, I had used only line 1 for data, and line 2  
for nothing, and had the jack connected to line 1 since I don't 
have a telephone connected to the Unix PC. 

2) Logged on, entered unix, and typed:
cu -d -s 1200 -l /dev/ph1 phone#

The -d was for just in case it failed, but it worked fine.

I concluded that you can't use cu without both
lines "connected" to something in "Hardware Preferences",
but you CAN use the AT&T Phone Manager. "Yes, I DID
first try to connect the jack to line 2", change the 
Hardware Pref. so that according to the computer, 
I had data coming into line 2, and nothing in line 1, but
the system wouldn't let me do this. It gave me some sort of
error message saying that to use line 2 you have to have something
connected to line 1 also.

What, exactly does this mean?
Does cu always try to go through line 2 no matter what?
Why do you have to have something connected to line 1
(at least in the preferences, to fool the computer) in order
to use line 2 ?
Interesting...

In case anyone is interested:
20M HD
1 M RAM
3.5 software.


--------------------------------------------------------------------
Paul Wolfson		"They float. Everything down here floats...
att!ihuxy!wolfer         and you'll float, too..."