[IP] more on FCC order on VOIP snooping

[David Farber <dave@farber.net>]

Begin forwarded message:

From: "Synthesis: Law and Technology"  
<synthesis.law.and.technology@gmail.com>
Date: May 9, 2006 10:19:16 AM EDT
To: dave@farber.net
Cc: rlrevell@joe-job.com
Subject: Re: [IP] FCC order on VOIP snooping

Dave,

It appears this question is more technical than legal since there are  
many ways to avoid falling under CALEA to do this form of online  
'jamming'.  As Lee said, it's not VoIP even tho it could be 'used'  
for it.  I'm sure we have all heard the joke with the punchline that  
says "yes but you have the equipment for it'  Just stay away from the  
actual VoIP and the probabilty of someone implementing a filter for  
it to conform to CALEA becomes vanishingly small.

Now if you want to go the opposite way and use your regular home (or  
office) VoIP for jamming then it would potentially fall under CALEA  
and it then becomes an engineering problem.  The same timing issues  
exist for voice as they do for music timing. In fact, they are  
potentially more strict since delays in the 10 msec range are  
commonly used as 'effects' in music and render speech rather  
interesting and times comical and at times unrecognizable.  So I  
suspect if musicians wish to jam on VoIP circuits they will find  
their instruments occasionally having 'free' reverb or flanging  
effects. I suspect (without having tested it) that the implementation  
will make a difference.




On 5/6/06, David Farber <dave@farber.net> wrote:

Begin forwarded message:

From: Lee Revell <rlrevell@joe-job.com >
Date: May 6, 2006 11:40:09 AM EDT
To: David Farber <dave@farber.net>
Subject: FCC order on VOIP snooping

http://hraunfoss.fcc.gov/edocs_public/attachmatch/DOC-265221A1.pdf

I have a question for the lawyers on IP (not looking for free legal
advice, just your thoughts ;-).

I just returned from presenting a paper at the 4th Linux Audio
Conference in Karlsruhe, Germany and there's currently a lot of work on
low latency, high quality realtime audio over IP - the point of which is
to allow musicians to collaborate (or "jam") live over the net.  The
upper latency limit between musicians for playing "live" is about
20-30ms so the speed of light prevents this from ever working beyond a
few hundred miles, but it still should be quite useful.

Has there been any discussion of whether this kind of peer to peer audio
system, which is not designed for VOIP but could obviously be used for
that, would be affected?  AFAICT having to implement CALEA would be the
death of any such system, as it's simply a musician's peer to peer tool
not a centralized operation, plus I can't imagine how you would
implement CALEA without killing the latency.

Lee





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Dan Steinberg

SYNTHESIS:Law & Technology
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