asterisk users - Oct 2006 - prohibit CallerID presentation

On ISDN lines it's possible to prohibit the
presentation of caller id, what if I have a SIP
gateway, something like an Audiocodes Mediant
1000. How do I prohibit the caller id presentation
on that one?

Regards,
  Kristian

-- 
Kristian Larsson                                         KLL-RIPE
Network Engineer                            Net At Once [AS35706]
email: kristian@netatonce.se                      irc: kll@ircnet
phone: +46 470 592717                        cell: +46 704 910401