PAIX

Mon Nov 18 16:27:58 UTC 2002

I agree with everything said Stephen except the part about the 
medical industry.  There are a couple of very large companies doing 
views over an IP backbone down here.  Radiology is very big on 
networking.  They send your films or videos over the network to where 
the Radiologist is.  For example one hospital owns about 6 others 
down here, and during off hours like weekends etc, the 5 hospitals 
transmit their films to where the 1 radiologist on duty is.

There are also several clinic chains where they take the films and 
then send them to the radiologists in another location.  Some of 
these are really rural areas and apparently the doctors used to have 
to drive in on certain days, or fedex, not exactly great if it really 
is an emergency.

Dont know the legality, but apparently people are really doing it. 
Im not sure any of this needs an exchange pt though.  None of it is 
real time yet.

At 6:55 -0600 11/18/02, Stephen Sprunk wrote:
>Thus spake "Jere Retzer" <retzerj at ohsu.edu>
>>  - Coast-to-coast "guaranteed latency" seems too low in most cases that I've
>>  seen. Not calling CEOs and marketers liars but the real world doesn't seem
>>  to do as well as the promises.
>
>Someone in the engineering group of a promising local ISP once told me their
>billing and capacity planning model was designed for them to fail 
>every customer
>SLA and still turn a profit.  Interpret that how you wish.
>
>>  As VOIP takes off "local" IP exchanges will continue/increase in importance
>>  because people won't tolerate high latency.
>
>Any point in the US is within 25ms RTT (or less) of a major exchange;
>eliminating this 25ms of latency will have no effect on VoIP unless you're
>already near the 250ms RTT limit for other reasons.
>
>>  What percentage of your phone calls are local?
>
>Who cares?  I'm billed by the airtime I consume, not by the distance my call
>goes.  Hawaii and the local pizza place cost me the same amount.
>
>>  - Yes, we do various kinds of video over Internet2. Guess what? Packet loss
>>  is very important. Fewer hops mean fewer lost packets.
>
>You've been listening to the MPLS/ATM crowd too long.  Congestion, not hops,
>causes packet loss.
>
>>  - Unfortunately, these applications do not work with today's local broadband
>>  networks Å\ one reason being the lack of local interconnection. People have
>>  quit believing the Radio Shack ads. We have the technology to make these
>>  applications work if we'd stop arguing that no one wants to use them. Of
>>  course no one wants to use them Å\ they know they won't work!
>
>These apps are broken because the interested parties aren't 
>interested.  Ask any
>doctor if he wants to give up physically seeing his patients -- there are laws
>in most states outlawing doctors talking to patients unless they are 
>physically
>present, not to mention most doctors refuse to even digitize their records or
>use Palm Pilots to look up forgotten symptoms or treatments. 
>Blaming broadband
>for the failure of your "killer apps" is not going to help.
>
>S