[comp.sys.dec] Trailblazer setup - help needed!

murray@motto.UUCP (Murray S. Kucherawy) (02/22/91)

I just got a trailblazer for our MicroVAX II ("motto"), and I'm trying
to switch from our Hayes-compatible 1200 baud modem to this modem.

But I can't get my trailblazer to work.  It will talk in all the baud rates
I want it to if I hook up a terminal to it and try it... autobauding
is fine.  It also answers and connects properly when I dial manually, no
matter what baud rate.

The problem lies in getting our uVAX to talk to it properly.  We're running
Ultrix V2.0-1, and it's coming off a port that is was configured at 1200
baud, and is now configured for 9600 baud.

Excerpts from pertinent files:

/etc/ttys:
ttyd0 "/etc/getty D9600" dialup on modem shared

/etc/acucap:
#Telebit Trailblazer 19200 baud modem.
# (touch tone dialing)
#
telebit|trailblazer|tbit|Telebit Trailblazer (autobauding):\
	:cr:db:hu:ls:ss=AAATZ\r\d:sr=OK:sd#250000:di=A\dA\dATS50=0DT:dt=\r:\
	:dd#100000:fd#120:rs=,:os=CONNECT:ds=\r\d+++\dATZ\r:ab=\r\d+++\dATZ\r:
tfast|telebit-fast|tbit-fast|Telebit Trailblazer FAST MODE:\
	:cr:db:hu:ls:ss=AAATZ\r\d:sr=OK:sd#250000:di=A\dA\dATS50=255DT:dt=\r:\
	:dd#100000:fd#120:rs=,:os=FAST:ds=\r\d+++\dATZ\r:ab=\r\d+++\dATZ\r:

/usr/lib/uucp/L-devices:
ACU ttyd0 ttyd0 1200 telebit
ACU ttyd0 ttyd0 2400 telebit
ACU ttyd0 ttyd0 9600 tfast
ACU ttyd0 ttyd0 19200 tfast

The modem port on motto seems to drop DTR every so often, and that (I think)
is a big part of what's causing the problem.

After making changes to /etc/ttys, I sent a "kill -HUP" to init so it would
restart the getty processes, but a protocol analyzer showed that the port
was still talking at 1200 baud.  I wonder if this is just a limitation
of Ultrix... or if I need to reboot...

I tried adding a null modem between motto and the trailblazer, but that just
made things worse.

Any suggestions?

-- 

=============================== Murray S. Kucherawy ==========================
Motorola Canada, Ltd.     Communications Division, Toronto      [on work term]
University of Waterloo, Ontario, Canada               2B Math/Computer Science
Internet: murray@motto.UUCP (work)       mskucherawy@watmath.UWaterloo.ca (UW) 
UUCP:     uunet!utai!lsuc!motto!murray   uunet!watmath!mskucherawy

mandel@vax.anes.tulane.edu (Jeff E Mandel MD MS) (02/23/91)

In article <400@motto.UUCP> murray@motto.UUCP (Murray S. Kucherawy) writes:
>I just got a trailblazer for our MicroVAX II ("motto"), and I'm trying
>to switch from our Hayes-compatible 1200 baud modem to this modem.
>
>But I can't get my trailblazer to work.  It will talk in all the baud rates
>I want it to if I hook up a terminal to it and try it... autobauding
>is fine.  It also answers and connects properly when I dial manually, no
>matter what baud rate.
>
>The problem lies in getting our uVAX to talk to it properly.  We're running
>Ultrix V2.0-1, and it's coming off a port that is was configured at 1200
>baud, and is now configured for 9600 baud.
>
I run VMS, and had some problems until I got my settings right:

S00=001 S01=000 S02=043 S03=013 S04=010 S05=008 S06=002 S07=080 S08=002 S09=006
S10=007 S11=050 S12=000 
S45=255 S47=004 S48=000 S49=000
S50=000 S51=005 S52=001 S53=002 S54=003 S55=003 S56=017 S57=019 S58=000 S59=000
S60=000 S61=020 S62=002 S63=001 S64=001 S65=000 S66=001 S67=001 S68=255 
S90=000 S91=000 S92=000 S95=000 
S100=000 S101=000 S102=000 S104=000 
S110=001 S111=255 S112=001 
S120=012 S121=000 

Note that this is for 19200.

Good luck with the Ultrix.

Jeff E Mandel MD MS
Asst Professor of Anesthesiology
Tulane University School of Medicine
New Orleans, LA