"Import contacts" not available?

Hi,

we got a new Exchange 2013-setup running and customers are asking were to find the import contacts function in OWA. We did nothing related to this on the servers, no change in config, nothing. There's an old thread on the forums that tells this function is available for Office365 only, the online help of OWA 2013 doesn't mention this in any way.

See http://social.technet.microsoft.com/Forums/exchange/en-US/de2424a4-6c34-4bab-88aa-5a36010941c0/how-to-make-import-contacts-available

Could anybody please help me?

Kind regards,
 Norbert