[comp.dcom.modems] Ventel drop CD on callback

pineapp@netcom.COM (Daniel Curry) (06/21/91)

 I have a Ventel 9600 plus modems attach to a portmaster that is using
a Sun Microsystems server /dev files. Two of the modems maintains 
Carrier Detect on the inintail call-back. The third modem drops carrier
during the call-back. This modem works great if I don't use the call-back
feature. I have gone to Ventel and we did hook up the modems on there
P.C.'s using procomm. The call-back feature works. 

  Here is the switch settings on the failed modem;

at\s
&A=0 &B=0 &C=1 &D=3 &G=0 &H=0 &L=0 &M=0 &P=0 &R=1 &S=0 &T=4 &X=0  &Y=1
 B=1  E=1  F=1  H=0  L=1  M=1  Q=0  V=1  X=0  Y=0 
*B=0 *C=0 *D=0 *F=0 *L=0 *M=0 *R=0 *S=0 *T=0 
%B=5 %C=1 %F=2 %G=1 %J=0 %L=2 %N=0 %P=0 %T=15 
\B=0 \F=10 \N=0 \Q=3 \V=0 
#E=0 #R=0 #S=1 
\T=000  *A=018,015,001,004


   Here is the /etc/gettytab file;

#
# Fast dialup terminals, 2400/1200/300 rotary (can start either way)
#
D9600|Fast-Dial-9600:\
        :im=\n9600 Baud. N0 UNAUTHORIZED USE\n:\
        :nx=D2400:tc=9600-baud:
D2400|Fast-Dial-2400:\
        :im=\n2400 Baud. N0 UNAUTHORIZED USE\n:\
        :nx=D1200:tc=2400-baud:
3|D1200|Fast-Dial-1200:\
        :im=\n1200 Baud. N0 UNAUTHORIZED USE\n:\
        :nx=D300:fd@:tc=1200-baud:
5|D300|Fast-Dial-300:\
        :im=\n300 Baud. N0 UNAUTHORIZED USE\n:\
        :nx=D2400:tc=300-baud:

  Anyone know why this is happening??