sub _list_cdr_usage {
# XXX CDR type support...
+ # XXX any way to do a paged search on this?
+ # we have to return the results all at once...
my($svc_phone, $begin, $end, %opt) = @_;
map [ $_->downstream_csv(%opt, 'keeparray' => 1) ],
$svc_phone->get_cdrs( 'begin'=>$begin, 'end'=>$end, );