On Tue, 9 Jul 1996, SIMPKINS, Terry wrote:
 
> We have been (trying) using USRobotics Courier V.34 modems on DTC
> connections with "not so good" results.  It seems like I remember seeing
> something else about these modems on the list.
>
> The symptoms are:
>  - the line rings
>  - we hear the modems try to sync up
>  - "no carrier" message - this doesn't look like a timeout. it only takes a
> couple of seconds to get the message
>
> We have genuine authentic HP modem cables.
>
> The DTC ports are configured as follows:
> line speed     19200
> rec width 80
> modem type     1
> modem behavior 1
> parity         none
> speed sense    yes
> allow hello    yes
> reset term     no
> NLIO device    no
> h/w handshake  no
>
> anyone else using these modems succesfully?
> Thanks
>
> Terry W. Simpkins
> Lucas Control Systems Products
> (804) 766-4278        [log in to unmask]
> ***************************************************************
> **  I have no new catchy signiture line.  Some would say     **
> **    I have never been very "catchy" anyway.                **
> **  Opinions here are mine only, not my employers            **
> ***************************************************************
>
 
Terry:
Make sure the modem is operating in "dumb" mode, that is, it is not
sending messages line "RING", "CONNECT", etc. to the HP 3000.  Depending
upon the modem, you may have to do some or all of the following:
 
   *  Disable command echo
   *  Disable result codes
   *  Flip a dip switch for "dumb" mode.
 
It has been a while since I've used a Courier modem, so I don't remember
the specifics of that modem.  The modems we have here like for us to set
the options:
 
AT E0    (disable command echo)
AT Q1    (disable result codes)
AT \V0   (disable protocol result codes)
 
And if that were not enough, there is a jumper within the modem we have
to change (hey, what can I say, they were the lowest bidder so the US
government bought them).
 
Hope the above helps!
 
John
 
PS:  Remember, your AT commands may vary from those shown above.