StartTLS in LDAP?

Nelson Bolyard <[email protected]>
Newsgroups gmane.comp.mozilla.devel.directory
Message-ID <[email protected]> 
LDAP gurus:

Does LDAP have an equivalent of IMAP/POP/SMTP's StartTLS feature,
whereby a connection on a "normal" (non-SSL) port negotiates that it
will begin to use SSL/TLS, and then does begin to use it, on that same
connection, without opening a new connection on a new port?

If so, in what RFC or other document is it defined, and by what name is
it known?
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