Hi IPSec with compression is a good idea, but it still add's AH/ESP packet headers to the system that I would like to avoid. And voice data is already compressed and no further compression will happen. We are limited to bandwidth usage and packet header compression was one of the options that I am looking at . Thomas ----- Original Message ----- From: "Eric Leblond" <eric@regit.org> To: <lartc@mailman.ds9a.nl> Sent: Wednesday, August 20, 2003 9:43 AM Subject: Re: [LARTC] cRTP and RTP or other Header methods of headercompression