On Thu, 2003-09-11 at 14:05, Dan Tusa wrote:Hi,
Companies that offer telephone service to the public are obliged to offer tapping to all kind of authorities.
Does anyone know how to tap in Asterisk? I.e. record (or copy) a conversation based upon their telephone number?
Wouldn't this be possible for your provider to do for you? It would seem that you would be buying service from some larger telecom and they already have to meet those functions. So wouldn't it be possible to shift it to them, especially if all your traffic for any specific customer always crossed a specific telecom? -- Steven Critchfield <[EMAIL PROTECTED]>
Consider this case, though:
CLEC-R-Us, Inc. has a class 5 switch, and provides local and LD service to customers. They comply with all relevant laws regarding CALEA and recording on their switch system.
CLEC-R-Us also offers DSL services and Internet access. CLEC-R-Us offers a "special" rate when your business gets service and you also buy service for all your employees in the same region: free calling between employees and the business, and even free inbound calls from the outside world to each of those locations, all using VoIP. CLEC-R-Us uses Asterisk to terminate a PRI from their switch for inbound/outbound calls.
So far so good... almost. The CALEA requirements can be handled (probably) for inbound calls from the PSTN by existing methods. BUT: What happens when the FBI comes in and asks for recordings of calls between Customer A (VoIP) and Customer C (VoIP) which aren't touching the Class 5 switch at all, because they're looped between each other through Asterisk or (worse yet!) the RTP data doesn't even go through CLEC-R-Us at all? Whoops. Suddenly, CLEC-R-Us is out of compliance, and Mr. FBI-Guy is doing a lot of frowning and mentioning words like "FCC" and "injunction" on the cell phone to his legal department.
A possible ugly way to handle this is to not actually terminate any VoIP-to-VoIP calls to each other directly, but send them all out a PRI into the Class 5 switch, and loop it right back out to the Asterisk server on another PRI channel. Yuck. Another possible way to handle this is to not be a CLEC that has the burden of those legal requirements.
Wait until ENUM and/or TRIP makes this kind of dialing ubiquitous, such that it does not even require a CLEC of any kind of intermediate provider. Whoa, Nelly! I hope you folks at various government agencies have an army of technical people in the field with DSL/cable/optical sniffers, since that's where all this tapping is going to have to be done. The law is far behind these advances, and the more observant (but reactionary) legislators will soon get wind of this and promptly think they can control the setting of the sun and the movement of the tides with new laws. I won't even go into open-source crypto for RTP sessions; that's another hysteria waiting to happen. Your mileage may vary, I am not a lawyer, etc.
JT _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users
