# create the channel
$dxchan = DXCommandmode->new($call, $conn, $user) if ($user->sort eq 'U');
$dxchan = DXProt->new($call, $conn, $user) if ($user->sort eq 'A');
+ $dxchan = BBS->new($call, $conn, $user) if ($user->sort eq 'B');
die "Invalid sort of user on $call = $sort" if !$dxchan;
}