Date: Mon, 22 Jan 2001 12:35:18 +1030 From: Greg Lehey <grog@lemis.com> To: "Michael C . Wu" <keichii@peorth.iteration.net> Cc: Brad Knowles <brad.knowles@skynet.be>, freebsd-chat@FreeBSD.ORG Subject: Mobile phone coverage (was: VCD (was Re: cvs commit: src/sys/dev/ata atapi-cd.c)) Message-ID: <20010122123518.L3066@wantadilla.lemis.com> In-Reply-To: <20010121184810.A45428@peorth.iteration.net>; from keichii@iteration.net on Sun, Jan 21, 2001 at 06:48:10PM -0600 References: <200101211447.f0LElEk04073@mobile.wemm.org> <KAECKEJJOLGHAFGGNIKMAELICAAA.res02jw5@gte.net> <20010121145018.A73989@citusc17.usc.edu> <20010121165422.A44505@peorth.iteration.net> <v04220821b691222656eb@[10.0.1.2]> <20010121181251.B44819@peorth.iteration.net> <v04220825b6912c57be5b@[10.0.1.2]> <20010121184810.A45428@peorth.iteration.net>
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On Sunday, 21 January 2001 at 18:48:10 -0600, Michael C . Wu wrote: > On Mon, Jan 22, 2001 at 01:29:13AM +0100, Brad Knowles scribbled: >> At 6:12 PM -0600 2001/1/21, Michael C . Wu wrote: >>> Switch a SIM card? >> Do you really want to carry around three SIM cards, three phone >> numbers, and have to be constantly switching between them to get >> coverage? You might as well have three cheap phones, one on each >> network, and be done with it. > > Buy a dual-band phone? That's not the issue here. BTW, for the USA you need a three-band phone. That is, incidentally, the only kind of phone which will work just about anywhere (I'm not sure about Israel and Korea). >> But if you want to receive automated SMS messages from a network >> monitoring system, you have to make sure that the carrier for the >> gateway machine is on the same carrier your phone is, otherwise it >> simply won't work. We have investigated this matter at length, and >> it looks like the only solution we have available to us is to set up >> three separate gateways, one for each carrier within the country. >> >>> The US carriers identify via the EIN of the phone. >>> But in reality, you really have no roaming between two carriers >>> much. e.g. AT&T phones will not work with Sprint networks. >> >> But Sprint phones have to work on all the analog networks (which >> they don't own), because their coverage is so incredibly crappy. You >> can't go more than a pencils width away from the major interstates, >> or outside the largest metropolitan areas, before you're off Sprint's >> network and one one that belongs to someone else. > > It is very hard for the US to build a large-scale cell phone system > simply because it is too large a country. The real issue is competition. One large company would be able to get better coverage. >>> Bottom line, I like GSM for being the lesser evil. >> >> I'll take CDMA, any day. Fortunately, I won't have to wait too >> long before everything over here will be CDMA, and by then, maybe all >> the stupid little national carriers will have been consolidated into > > Love love 3G+W-CDMA. And where do I get one? Greg -- Finger grog@lemis.com for PGP public key See complete headers for address and phone numbers To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-chat" in the body of the message
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