modem does not pick up the phone

[VERFREL at YaleVM.YCC.Yale.Edu]

I am trying to dial into a Sun 4 with a Hayes modem.  When I disabled
login on the line, I am able to dialout. But when I change the ttytab, and
enable the logins, and I try calling the Sun, it does not pick up the
phone. I have been looking through the sun-spots archives at Rice, and I
have not found anything to help me. Also, I know there is a machine out
there in net world which has archives of help files for system
administrator, but I don't know which machine it is. I'd appreciate it if
you could give me its address. Can you please reply via e-mail, at
verfrel at yalevm.bitnet, because I have limited/frustratting access to news,
and I may not get to read any answers posted before they are purged from
the machine I use to read news.  I'll be glad to post a summary to tell
what worked. Thanks in advance,

     Frederique Vernhes
     verfrel at yalevm.bitnet