Im trying to setup a ppp modem connection on ttya using a SPARCClassic using 
a serial terminal on ttyb under NetBSD 1.4.2

I referred to the (well-known) SUN Hardware FAQ, wich states:

********************************
+ DB25 A/B serial ports on SPARCstation SLC, ELC, others?

        1  unused       9  unused       17 A-RxC (receive clock)
        2  A-TxD        10 unused       18 unused
        3  A-RxD        11 unused       19 B-RTS
        4  A-RTS        12 B-DCD        20 A-DTR
        5  A-CTS        13 B-CTS        21 unused
        6  A-DSR        14 B-TxD        22 unused
        7  A&B-GND      15 A-TxC in (?) 23 unused
        8  A-DCD        16 B-RxD        24 A-TxC out (transmit clock out)
                                        25 unused

   Note that only port A has full modem control.

+ DB25 A/B serial ports on SPARCstation LX, SPARCclassic, and
  SPARCstation 10, others?

   As for the SLC/ELC, but with additional signals for the B port:

        11 B-DTR        18 B-TxC in     25 B-TxC out
********************************

now, the cable seems ok to me, and I can use it for console I/O on either 
port A/B, but when it comes to connecting the modem it just hangs with the 
DTR on...

same behaviour on both ports, but as I can read from the FAQ only port A has 
full modem control, so that I configured the prom to get I/O from ttyb and 
attached the modem on port A.

Now, since I re-checked the whole thing at least 200 times, and considering 
that both parts of the Y cable work fine for cosole usage, I am starting to 
think that the problem may lie in my NetBSD modem configuration...pls excuse 
my ignorance..but I think (and Im probably wrong) that on a simple "echo ATZ 
 >/dev/ttya" I should see the leds flashing on the front panel of the 
modem...am I missing something?

  Germano

_____________________________________________________________________________________
Get more from the Web.  FREE MSN Explorer download : http://explorer.msn.com