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HPUX D-Class modem gettybleedindefs!

Posted on 1999-07-28
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Last Modified: 2013-12-16
This weekk I av mostly been aving problems wiv modems!

I have a D class HP9000 running HP-UX 10.01 with an EISA mux card. I have configured a Multitech MT1432 modem and can use cu to dial out and connect to other systems.

Dialling in is another matter though, the system answers, negotiates and connects successfully at 9600 every time but I cannot get a login prompt or any other response and 30 seconds later the carrier drops.

I have included the gettydefs and inittab files below, perhaps one of you chaps could help me with this one, I think it has something to do with gettydefs but I can't see the wood for the trees now.

Thanks in advance..

J

gettydefs file....
9600m # B9600 HUPCL IGNPAR ICRNL IXON OPOST ONLCR CS8 CREAD
        ISIG ICANON ECHO ECHOK ISTRIP IXANY TAB3
      # B9600 SANE CS8 ISTRIP IXANY TAB3 HUPCL
      #Modem login: #9600m

inittab entry...
a2:23:respawn:/usr/lbin/uucp/uugetty -r -t 60 -h ttyd2a2 9600m

dial in device file...
lssf /dev/ttyd2a2
eisa_mux0 card instance 2 port a2 ccitt callin at address 8/20/5/1 /dev/ttyd2a2

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Question by:jools
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4 Comments
 
LVL 5

Expert Comment

by:ecw
ID: 1813425
a few things to try ...

don't use ccitt dial in, on HP-UX 9 it's fine, on 10.X, not so fine.

check that getty has grabbed the line after connection using ps.  if the tty field is ttyd2a2 (not a ?), it has.

try sending a break to the hp after connection is established, this might kick it into life.
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LVL 19

Author Comment

by:jools
ID: 1813426
What's wrong with CCITT on 10.x?

I had a problem with the modem settings on Friday, the serial speeds have been modified and I now get a getty respawned.
I can now enter a userid but when I press return nothing happens (handshaking??).

I tried pressing break but it doesn't work.

Any ideas?

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LVL 19

Author Comment

by:jools
ID: 1813427
Thanks ecw, you're a wonderful human being!!!

CCITT is definately stuffed on 10.x, I removed the device file and recreated it and it worked, please post an answer here for your points.

I don't suppose you'd know why CCITT is shagged though and if there is a patch for it, just out of interest!

J :)
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ecw earned 450 total points
ID: 1813428
Answer for the above.
Try as I might, I have been unable to find any explanation as to why CCITT doesn't work on 10.X.  As I said though on 9.04 it's (in the UK at least) often the only way to get the buggers working.  Believe me, I've spent many, many hours getiing some modems working, even to the point of plugging analysers inline and debugging the whole handshake, which without correct pin-outs is a right pain in the arse!


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