Re: DECserver / Modem Hangup Problem

From: Albrecht Schlosser (ajs856_at_tiscali.de)
Date: 05/05/03 

Date: Mon, 05 May 2003 20:07:14 +0200

Vinit Adya wrote:
>
> Gentlemen!
> I have DecServer 900 connected to modems. The moment i call up this
> modem (ie afetr handshake and CD) the modem disconnects itself. Its
> not a communication from, its a problem on the EIA232 problem. (If i
> am connected to the DecServer modem port through LAT i have a stable
> Connect) The flow control is hardware CTS-DSR-RTS-DTR on server as
> well as the modem.
>
> Could you help me out please

To help you, we need more info, e.g.

- what kind of modem (Hayes/AT compatible ?)
- what kind of connector ? (DB-9 / DB-25)
- what kind of cable ? (which pins are connected)
- full decserver port characteristics (list port n)
- modem setup, if possible (ATI4, AT&V or similar)
- is it a dial-in problem ? (seems so)
- do you / can you dial out ?

AFAIK, the DecServer 900 doesn't have full modem support, but I know
that you can get a working configuration. The main point is to make the
right cabling _and_ to have the right modem setup. From my experience,
each modem has it's own special parameters, even if they are Hayes (AT)
compatible.

For a dial-in modem, you may need to set some modem parameters (echo
off, etc.) and _save_ them in the default configuration (e.g. AT&W).

For the first tests you may try setting the terminal server port to
"signal control disabled" and "modem control disabled" (like a local
port). This should enable you to dial in. But _don't_ leave it this way,
since this IS a security risk (the terminal server doesn't log out the
port when disconnected).

Albrecht Schloßer

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