🚀 go-pugleaf

We have a Telebit T2500 connected via a built-in serial port at 19200
baud with hardware flow control to a SPARCstation 2 running SunOS
4.1.1b.

Every day or two, it gets into a state where it won't answer the phone
on incoming calls although outgoing calls work fine.  Usually the
modem's DTR light is on, but in this state, it is off except during
outgoing calls.

Sometimes, killing the getty on the port fixes the problem, but
usually the DTR light stays out and init refuses to start a new getty.

Telebit technical support is not able to help, and the people we get
our system support through claim that Suns don't do shared
dialin/dialout modems.

The modem and system configurations are consistent with Telebit's
recommendations.

Here are the modem's settings:

E0 F1 M1 Q4 P V1 W0 X3 Y0 &P0 &T4     Version GF7.00-T2500SA
S00=001 S01=000 S02=043 S03=013 S04=010 S05=008 S06=002 S07:060 S08=002 S09=006
S10=007 S11=070 S12=050 S18=000 S25=005 S26=000 S38=000 
S41:003 S45=000 S47=004 S48=000 S49=000 
S50=000 S51:005 S52:002 S54:003 S55:003 S56=017 S57=019 S58:002 S59=000 
S61:255 S62=003 S63=001 S64:001 S65=000 S66:001 S67=000 S68:002 S69=000 
S90=000 S91=000 S92:001 S93=008 S94=001 S95:002 S96=001 S97:001 S98=003 
S100=000 S101=000 S102=000 S104=000 S105=001 S106:001 S107=020 
S110=255 S111=255 S112=001 
S121=000 S130:004 S131:001 
S150=000 S151=004 S152=001 S153=001 S154=000 S155=000 S157=000 S158=000 
S160=010 S161=020 S162=002 S163=003 S164=007 S169=000 S255=000 

Here are the SPARCstation's eeprom settings:

ttyb-rts-dtr-off=false
ttyb-ignore-cd=false
ttyb-mode=19200,8,n,1,h

Here is the Dialers file:

#
#   Telebit TrailBlazer T2500
#
tbany       =W-, "" A\pA\pA\pA\pT OK ATE1 OK ATS50=0S95=0S111=0DT\T CONNECT
tbanymnp    =W-, "" A\pA\pA\pA\pT OK ATE1 OK ATS50=0S95=1S111=0DT\T CONNECT "" /REL
tbanyauto   =W-, "" A\pA\pA\pA\pT OK ATE1 OK ATS50=0S95=2S111=0DT\T CONNECT

tb2400      =W-, "" A\pA\pA\pA\pT OK ATE1 OK ATS50=3S95=0S111=0DT\T CONNECT\s2400
tb2400mnp   =W-, "" A\pA\pA\pA\pT OK ATE1 OK ATS50=3S95=1S111=0DT\T CONNECT\s2400/REL
tb2400auto  =W-, "" A\pA\pA\pA\pT OK ATE1 OK ATS50=3S95=2S111=0DT\T CONNECT\s2400

tb9600      =W-, "" A\pA\pA\pA\pT OK ATE1 OK ATS50=6S95=0S111=0DT\T CONNECT\s9600
tb9600mnp   =W-, "" A\pA\pA\pA\pT OK ATE1 OK ATS50=6S95=1S111=0DT\T CONNECT\s9600/REL
tb9600auto  =W-, "" A\pA\pA\pA\pT OK ATE1 OK ATS50=6S95=2S111=0DT\T CONNECT\s9600

tbpep       =W-, "" A\pA\pA\pA\pT OK ATE1 OK ATS50=255S111=0DT\T CONNECT\sFAST

tb9600mnpk  =W-, "" A\pA\pA\pA\pT OK ATE1 OK ATS50=6S95=1S111=10DT\T CONNECT\s9600/REL
tb9600mnpx  =W-, "" A\pA\pA\pA\pT OK ATE1 OK ATS50=6S95=1S111=20DT\T CONNECT\s9600/REL
tb9600mnpu  =W-, "" A\pA\pA\pA\pT OK ATE1 OK ATS50=6S95=1S111=30DT\T CONNECT\s9600/REL

tbpepk      =W-, "" A\pA\pA\pA\pT OK ATE1 OK ATS50=255S111=10DT\T CONNECT\sFAST/KERM
tbpepx      =W-, "" A\pA\pA\pA\pT OK ATE1 OK ATS50=255S111=20DT\T CONNECT\sFAST/XMDM
tbpepu      =W-, "" A\pA\pA\pA\pT OK ATE1 OK ATS50=255S111=30DT\T CONNECT\sFAST/UUCP

Here is the Devices file:

#
# Telebit Trailblazer TB2500 on ttyb/cua1/ttyd1
#
ACU     cua1    -       A19200  tbany           \T
ACU     cua1    -       B19200  tbanymnp        \T
ACU     cua1    -       C19200  tbanyauto       \T
ACU     cua1    -       D19200  tb2400          \T
ACU     cua1    -       E19200  tb2400mnp       \T
ACU     cua1    -       F19200  tb2400auto      \T
ACU     cua1    -       G19200  tb9600          \T
ACU     cua1    -       H19200  tb9600mnp       \T
ACU     cua1    -       I19200  tb9600auto      \T
ACU     cua1    -       J19200  tbpep           \T
ACU     cua1    -       K19200  tb9600mnpk      \T
ACU     cua1    -       L19200  tb9600mnpx      \T
ACU     cua1    -       M19200  tb9600mnpu      \T
ACU     cua1    -       N19200  tbpepk          \T
ACU     cua1    -       O19200  tbpepx          \T
ACU     cua1    -       P19200  tbpepu          \T
Direct  cua1    -       Any     direct


Here is the /etc/ttytab file:

# built-in ports - hardwired
#ttya   "/usr/etc/getty std.9600"       unknown         off local secure
#ttyb   "/usr/etc/getty std.9600"       unknown         off local secure

# built-in ports - dial-in
ttyd0   "/usr/etc/getty std.9600"       unknown         off local secure
ttyd1   "/usr/etc/getty p8rtscts.19200" vt100           on remote

# built-in ports - dial-out
cua0    "/usr/etc/getty std.9600"       unknown         off local secure
cua1    "/usr/etc/getty std.9600"       unknown         off remote secure


And, finally, here is the /etc/gettytab entry:

p8rtscts.19200:\
        :sp#19200:p8:ms=crtscts:


If anyone has seen this problem or has any ideas of what to do about
it, please post or email.

I am using the same style of setup with a TB+ on Dell SVR4 with no
problems at all.  Other than this lockup problem, it works great on
the Sun too.

Thanks,

-- 
-Bob Kukura		work: rk@lexicon.com
			home: rk@theep.boston.ma.us