Why not try Wireshark (former Ethereal)? Or even the tcpdump, which comes with most Linux distributions by default.

From: serusers-bounces@lists.iptel.org [mailto:serusers-bounces@lists.iptel.org] On Behalf Of POON Ben
Sent: Saturday, March 24, 2007 1:19 AM
To: serusers@lists.iptel.org
Subject: [Serusers] Capturing all messages for testing purposes

Hi,

I am setting up a testing environment with about 100 users.  I would like to see who is online/registered, conversation times, protocols, etc.  Basically I want to be able to capture all the messages for troubleshooting purposes, durability, compatibility, reliability, etc.  Will the acc module do that for me, how do I set it up to capture the data?

Thank you very much,

Ben