RTT from NY to New Delhi?

Stephen Sprunk stephen at sprunk.org
Wed May 16 15:03:42 UTC 2007

Thus spake "Tim Franklin" <tim at pelican.org>
> Going east from NY, you'd add 70 or 80ms to that - and a quick
> look suggests routes going west instead.  (Test from home to .IN
> NS goes London -> NY -> West Coast -> Singtel -> India, for
> ~370ms)
> It's starting to head a bit towards walkie-talkie mode for VoIP,
> but not too bad other than that...

You'd be surprised what people are willing to accept when the alternatives 
are worse.  I had a customer install VSAT in India just so they could use IP 
phones -- and their only gateway was in the US.  Apparently the audio 
quality and reliability of the PTT was so bad that they were willing to 
_stand in line_ to use the two IP phones there to make calls, even with the 
walkie-talkie effect in full force.  It was cheaper too, despite the 
outrageous cost of VSAT bandwidth.

US telcos and engineers tend to overestimate the importance of audio quality 
and reliability on VoIP; we have an entire generation of people now who have 
been trained by wireless carriers to _expect_ to pay through the nose for 
bad quality.  VoIP across the Internet, even with no QoS at all, looks great 
in comparison because it's cheaper and sounds better.


Stephen Sprunk      "Those people who think they know everything
CCIE #3723         are a great annoyance to those of us who do."
K5SSS                                             --Isaac Asimov 

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