(keitai-l) Re: OT?: Keitai camera image transfer (MMS/mail) throughput analysis?

From: Curt Sampson <cjs_at_cynic.net>
Date: 07/14/03
Message-ID: <Pine.NEB.4.51.0307141727510.863@angelic-vtfw.cvpn.cynic.net>
On Mon, 14 Jul 2003, Michael Sydenham wrote:

> I agree with Dirk here. There is protocol overhead to consider. In the case
> of PHS data - quoted as 64k (for dual slot), the usable rate is actually
> close to 55k.

I'm not sure what the deal is with PHS, but multi-slot definitely has
quite different behaviour from single-slot. On a single-slot (32K) packet
connection, I can get somewhere around 30 Kbps on a TCP/IP data transfer.
On a four-slot (128K) connection, I see 90 Kbps on a good day.

cjs
-- 
Curt Sampson  <cjs_at_cynic.net>   +81 90 7737 2974   http://www.netbsd.org
    Don't you know, in this new Dark Age, we're all light.  --XTC
Received on Mon Jul 14 11:34:18 2003