kppp and modem with usb<->serial adapter

James Richard Tyrer tyrerj at
Fri Jul 23 23:13:25 BST 2004

Dani Belz wrote:
> What is DTR?

It is the name of one of the pins in the RS-232 connector -- Data Terminal 
Ready.  If you are using hardware flow control, the Modem might expect to see a 
true signal on this pin.

> And why does my debian dialing tool work? This makes a
> /usr/sbin/pppd call $PROVIDER
> where $PROVIDER is a file in /etc/ppp/peers and looks like that:
> -----<snip>-----
> hide-password
> noauth
> connect "/usr/sbin/chat -v -f /etc/chatscripts/1und1"
> debug
> /dev/modem
> 230400
> defaultroute
> noipdefault
> user "1und1/XXXXXXXXXXXXXX at"
> remotename 1und1
> ipparam 1und1
> -----<snip>-----

The PPP script probably works because it is slightly different than the script 
that KPPP uses.  You can edit the script in KPPP to match and see if that works.

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