While its possible to do this, you would have to have a device that would not impact performance typically at every exit point, but in a perfect world it would be on the clients CPE device! Our wireless CPE's can do this. I would not that a business model to not bill until a request is completed would work due to the amount of hardware that x company would have to put out. Dennis Burgess, Mikrotik Certified Trainer Author of "Learn RouterOS- Second Edition" Link Technologies, Inc -- Mikrotik & WISP Support Services Office: 314-735-0270 Website: http://www.linktechs.net - Skype: linktechs -- Create Wireless Coverage's with www.towercoverage.com - 900Mhz - LTE - 3G - 3.65 - TV Whitespace -----Original Message----- From: Randy Fischer [mailto:randy.fischer@gmail.com] Sent: Sunday, June 09, 2013 5:59 PM To: North American Network Operators Group Subject: Mechanics of CALEA taps Dear nanog: Honestly, I expect replies to this question to range between zero and none, but I have to ask it. I understand the CALEA tap mechanism for most ISPs, generally, works like this: * we outsource our CALEA management to company X * we don't even know there's been a request until we've gotten a bill from X. And that's the extent of it. Well, golly Slothrop, maybe someone else has started picking up the tab. Would you even know? Is that possible? Thanks, Randy Fischer