[Service]
Environment={
    $OUT = 'ppp_options="';
    $OUT .= "user $DialupUserAccount name $DialupUserAccount ";
    # If you really want to change the options used by ipppd, then
    # you can set the IpppdOptions property of the 'isdn' service.
    # If you do this, you'd better know what you are doing!
    $OUT .= $isdn{'IpppdOptions'} ||  "noauth debug -vj -vjccomp -bsdcomp -ac -pc";
    $OUT .= " noipdefault ipcp-accept-local ipcp-accept-remote";
    $OUT .= ' ipparam diald"';
}
