How to only accept TLS connection on port 389

["Jean-Yves Avenard" <jyavenard@gmail.com>]

Hi

Is there a way to have OpenLDAP listening on port 389 (standard ldap)
but only accept tls encrypted session?

I've searched for quite a while and it seems that the only option is
to disable listening on port 389 alltogether and only listen on port
636.
But this isn't good for my purpose, as some broken clients only work
over TLS on port 389

Thank you
Jean-Yves