Re: Full 723.2kbps bluetooth speed on 2215

Hi guys,

I very much doubt your conclusions,
I cannot see any reason why full bandwidth cannot be achieved;
however, don't forget that some of the protocols you may be using
could be affecting measurement.
Also, there is no guarantee that the BTUART serial port on the h2210
is (yet) configured for full throughput.
As I've also suggested in the past: the BT system allows for an additional
3 voice channels which are capable of carrying 56Kb each.
Combining all these channels together should give a theoretical throughput
of 891Kb. (I forget the software to do this but mppp rings a bell:).

Regards,
Marcus.

> --- Matthew Reimer <mreimer_at_vpop.net> a écrit :
> > I'm trying to get the full 723.2kbps bluetooth throughput between a
> > linux box and an ipaq 2215. Right now the most I can get is about
> > 265kbps on a NAP profile, no matter how I mess with packet types, etc.
> > Does anyone know if the bluetooth chip on a 2215 is hooked up to a fast
> >
> > enough UART to allow full bluetooth throughput?
>
> after I dropped the IrDA dongle I had, because it wasn't SIR but FIR,
> I did a standard exchange with a bluetooth dongle.
>
> Unfortunately supported only in kernel 2.6.2 I believe, I used it
> between h2210 and win98. I get at best ~34kbytes per sec using
> ftp over activesync, which is a serial interface somehow. It
> does match your 265kbps I think.
>
> My guess is that it's a h2210's limitation.
> I think there's a website 'bluez' something regarding bluetooth
> under linux. They may have an explaination there.
>
> Christian
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Received on Thu Feb 19 2004 - 10:21:08 EST