UMTS — nice where it works

the daily blab
I’ve been looking for a good answer to connectivity while travelling for quite a while. Most of the time, I find myself paying $10/day for high-speed connectivity at my hotel and at T-Mobile hotspots — it’s great, but it’s not available everywhere. And I haven’t quite talked myself into signing up for the $30/month T-Mobile plan because I do want to be able to use wireless at places other than airports and Starbucks (I can’t afford to drink <b>that</b> much coffee!).

So when AT&T Wireless announced their <a href=”http://www.attwireless.com/umts”>UMTS</a> service last week, I was very interested. 300kb down, 50kb up — not bad. And IBM is willing to pay for the equipment and service, so I gave it a shot.

I got the Novatel Merlin U520 UMTS modem, since I was looking for a strictly-data service. I took it home, installed the software, and was on the air in minutes. And it worked at the advertised speed. It even worked in my office. I was happy (though the software is somewhat goofy!).

Last night, I decided to try an experiment — I set up my laptop on the passenger seat and had it connect to the service as I drove. I intended to start an audio stream and look for dropouts.

But I didn’t get that far. The modem showed “no signal” in the parking lot. That didn’t bother me, because my phone often shows “no signal” there. But I expected the modem to connect as soon as I got into the flats.

It didn’t. I didn’t keep a constant eye on the modem, but I glanced at it from time to time, and the first time I saw connectivity was only a mile or two from my house.

This morning, I used the modem at home, and again, I was happy — especially when we had a brief power outage, and my connection stayed up even though the house router went down (hmmm, maybe I should get a UPS!).

Then I drove to IBM’s Silicon Valley Lab for a meeting. My cellphone had full signal, but the modem showed no signal. So I came up on the building wireless LAN and did some investigation. It turns out that the Merlin U520 is UMTS-<b>only</b>; it doesn’t fall back to GPRS/EDGE, and so it’s useless in a non-UMTS area, which is most of the country. And so it won’t solve my problem of needing connectivity while travelling.

AT&T Wireless offers two UMTS data-capable cellphones which <b>do</b> claim to fall back to EDGE/GPRS data rates. They’re awfully large, but it’s probably worth trying one as an experiment on an upcoming trip. Otherwise, it’s back to Starbucks.
UMTS — nice where it works

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