Date sent:              Tue, 23 Feb 1999 16:54:09 EST
Send reply to:          [log in to unmask]
From:                   Wirt Atmar <[log in to unmask]>
Subject:                Re: DTC config
To:                     [log in to unmask]

> Curt writes:
>
> > I am trying to move a modem that worked connected to a DTC16 (direct
> > connect
> >  card) to a DTC16mx (DDP-2 rs-232 connection panel).  I have tried 4
> >  different configurations and none seem to work.
> >
> >  I have changed the port 0-7 to modem instead of direct. Have set modem
> >  type to 1, tried modem behavor 1,2, and 3.  Parity is none.  I never
> >  see the TR light come on and the modem never answers when called.
> >
> >  Can anyone shed some light on what I am doing wrong?
>
> The DTR (data terminal ready) light is lit when the HP3000 commands it to
> be lit. DTR is a signal to the modem that the host is ready to receive
> calls on the modem. It is also the signal line that the HP3000 uses to
> hang up the modem connection when a :BYE command is issued.
>
> A standard modem will not answer a phone call while the DTR signal is
> absent, although you can program virtually all modems to falsely set the
> DTR line high, essentially making the DTR signal wire irrelevant.
>
> If you have connected the modem to a non-modem capable port on the DTC
> (the DTR signal isn't even electrically present) and you have your modem
> programmed (as it should be) to observe the status of the DTR line, then
> the DTR light will never light and your modem will never answer.
>
> Wirt Atmar

Could it also be that the port is not configured correctly in NMMGR?

Gary

Gary Jackson
Nevada County Supt. of Schools
(530) 478-6400 x 215