On Sat, 21 Feb 2004 19:52:03 -0800, TCAS wrote:
> Al, I just left the Nextel wireless internet because it was very slow.
> Got the Verizon broadband now and I do see a big difference in speed. I
> did the toast.net speed test and my Nextel came in at 40-50 kbs. Did
> exact same test with Verizon and speed was from 350-700 kbs. I am
> Charlotte NC so it is not the speed that you had (wish it was). I am
> using the Airprime 3220 card and am happy with the service. I did have
> one issue with the Venturi software working one day and not the next. I
> had to reload both and it has been fine ever since. In fact upon reload,
> I connected without the Venture and it was about the same speed my
> Nextel was. The Venturi software makes a big difference for me. Not sure
> if my present card would work in the SD/DC area, but I would upgrade
> card if it did not to get the high speed you are getting
>
> TCAS
I don't think this is what he means, the PC3220 card will max out at
153kbs. The compression software negotiates the compression scheme with
the transparent proxy Verizon is using and it runs through the link
compressed and then decompresses it on the computer side of the link so
the apparent throughput can be much higher than the link itself. I myself
only like compression schemes on text only, no images! No image
compression scheme exists without lossiness. To get Verizon Broadband
Wireless which is what we are talking about here, you have to have a
CDMA
1X-
EVDO compatible device to do it and at least one phone has the
capability as well as the AirPrime PC5220 card.
There is no replacement for absolute connection bandwidth period! He
really is connecting at several hundred kbs with a theoretical maximum up
in the mbs with NO compression scheme necessary. The only compression
scheme I ever used that didn't piss me off, was STAC compression on an
ISDN bri line. Text throughput always went through at the maximum limit of
the modem itself and images were untouched as well as files in general.
Still, to have EVERYTHING download at upwards of 1mbs is much much better
than any neato flavor of the month, compression scheme.
A point worth mentioning here is that the PC5220 card will be
re-introduced
as the Sierra Wireless (Now owns AirPrime) 580 since the AirPrime cards
have a stringent voltage requirement of 3.3 volts whereas many card
bridges have only 3.0 volts and the device ends up looking like a pseudo
usb device rather than a serial device. This problem affects the 3200 and
3220 cards as well but the 3220 card will be obsolete before the end of
the summer anyway.
Dave