For non-Palm VII wireless data there's a number of technology choices:
CDMA - Sprint and Verizon support different data services in different
markets. The pdQ uses this service. Right now the data rate is 14.4. 56Kb
is rolling out in Japan now, but it will probably be slow in the US. CDMA
mostly exists in the US, Asia and Latin America. One advantage here is that
it is layered on the voice network so the build out is somewhat inexpensive
and has been paid for by the voice callers.
CDPD - This is what OmniSky uses. I'm not sure of the data rate, but think
AT&T actually operates the network. No integrated device, the modem snaps
on around our Palm. This does NOT include voice service.
GSM - Currently supports 9600. Uses more with Nokia and Ericsson phones and
popular in Europe but available lots of other places including here. I
don't think there is any integrated PalmOS device so people use IR or cable
between the Palm and the phone.
IDEN - This is operated by Nextel only and only Motorola makes phones. I
believe their service is 19200 or there abouts. Probably a cable between
your Palm and the phone is necessary.
I think the only fully integrated devices are the Symbol devices with
wireless LAN, the pdQ and the Palm VII, though the snap on modems aren't
too bad. For the pdQ phone info see www.kyocera.com. Qualcomm sold all
handset products to Kyocera.
A few other technologies I can think of that may be of less interested are
the 2.4 GHz wireless LAN (good only for a campus), AMPS cellular modems
(power hungry and none in useful form factor), Metrocom Ricochet (form
factor problems).
The nice thing about TCP/IP is that you can use what ever service or device
suits you at time and place.
LL
At 02:22 PM 4/13/00 -0700, Tony Davis wrote:
>Hi all,
>
>Thanks a lot for all the replys.It was a big help.
>I think I'll go for the TCP/IP solution with wireless modems.I am
>comfortable with C/C++ and dont mind programming effort required.
>But before finalising on Omnisky/PalmV, I would like to know if anyone has
>actually developed successful wireless based interactive applications using
>these equipments?
>I would also like to know what is PDQ phone and Cellular data services.Do
>they allow the user to use his existing Cell-Phone connection for wireless
>transmission?
>
>Once again thanks for kind help.
>Tony.
>
>
>
>
>
>
>
>
>
>
>----- Original Message -----
>From: Laurence Lundblade <[EMAIL PROTECTED]>
>To: Palm Developer Forum <[EMAIL PROTECTED]>
>Sent: Thursday, April 13, 2000 1:48 PM
>Subject: Re: Wireless connection in palm
>
>
> > You have two basic choices:
> >
> > 1) Palm VII
> > - possibly easier to program, might get away without C/C++
> > - can't transfer lots of data - only small HTTP-like requests
> > - have to use Palm.net
> > - use for web applet sort of results
> >
> > 2) TCP/IP
> > - works with lots of different services (land line modem, omnisky, celluar
> > data services, pdQ phone)
> > - more work programming
> > - transfer lots of data (per/byte cost is lower)
> > - can use any protocol you want
> > - wireless data rates today range from 9600 to 14400; will cross 56Kb or
>more
> >
> > I'd be cautious about porting UNIX socket apps. You have less than 30Kb of
> > heap after the net lib is up on older devices (14Kb on really old
>devices).
> >
> > LL
> >
> >
> > At 11:29 AM 4/13/00 -0700, Tony Davis wrote:
> > >Hi all,
> > >
> > >I'm new to Palm Application development.
> > >The Palm application that I have in mind needs to exchange data with a
> > >remote desktop(in another city) continuously.
> > >Can I achieve this through wireless media?(using wireless modem, cell
>phone
> > >connection,wireless net etc..?)
> > >If yes, what are the equipment/software that i have to purchase to
>develope
> > >and deploy such a solution.?
> > >Also can anyone give me a rough idea of the run-time cost of such a
>wireless
> > >connection?
> > >I have some experience using TCP/IP sockets.Can I use sockets for
> > >programming?
> > >
> > >Please send a detailed answer because dont know much about Palm or
> > >Communication.
> > >
> > >Waiting for some kind advices,
> > >Tony.
> > >
> > >
> > >
> > >--
> > >For information on using the Palm Developer Forums, or to unsubscribe,
> > >please see http://www.palm.com/devzone/mailinglists.html
> >
> >
> > --
> > For information on using the Palm Developer Forums, or to unsubscribe,
>please see http://www.palm.com/devzone/mailinglists.html
>
>
>--
>For information on using the Palm Developer Forums, or to unsubscribe,
>please see http://www.palm.com/devzone/mailinglists.html
--
For information on using the Palm Developer Forums, or to unsubscribe, please see
http://www.palm.com/devzone/mailinglists.html
