This page from DDI's site explains some of the wonders of PHS packet
technology: the ability to keep sessions alive even when the air-link drops.
There aren't any base stations on the train as far as I know.
By the way do you use any of the web or mail acceleration services on
----- Original Message -----
From: "Paul Hardy" <pjh_at_bushcat.com>
Sent: Tuesday, July 09, 2002 10:56 AM
Subject: (keitai-l) Re: International Usage - PHS vs WLAN
> > PHS, too does hand-off up although the maximum speed you can move at
> > while a call is in progress is somewhere around 100Km/h (originally it
> > was 40 Km/h).
> My b-mobile card keeps me connected, albeit at very low throughput, on the
> Shinkansen between Tokyo and Osaka. I thought there might be a PHS cell on
> the train (since they're getting the payphone signals to and from the
> This mail was sent to address dtalbot_at_j-com.co.jp
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Received on Tue Jul 9 06:19:20 2002