From: Vitorio M. <vit...@pe...> - 2006-09-22 19:27:39
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Craig Hughes wrote: > > The biggest hurdle to releasing a product for actual sale will be > acceptance of the device by network operators, which I have heard > might be both expensive and time- consuming (gotta love monopolies). > I'm hoping to have a device which I can stick my phone's SIM card > into and play with before the end of the year; device for sale will > likely not be this year; it could be next year, but it'll depend on > how quickly we can get a carrier to approve using it on their > network... Why do you need any carrier's approval? I thought the point of GSM networks was that any GSM device could have your SIM card stuck in it and it "just worked." I've certainly swapped SIM cards into unlocked phones, friends' phones, etc., and never had any issues. Thanks, Vitorio Miliano |
From: Michael T. <iam...@ho...> - 2006-09-23 02:16:31
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> Date: Fri, 22 Sep 2006 14:27:12 -0500 > From: vit...@pe... > Subject: Re: [Gumstix-users] GPRS / EDGE Module... >=20 > Craig Hughes wrote: > >=20 > > The biggest hurdle to releasing a product for actual sale will be > > acceptance of the device by network operators, which I have heard > > might be both expensive and time- consuming (gotta love monopolies). > > I'm hoping to have a device which I can stick my phone's SIM card > > into and play with before the end of the year; device for sale will > > likely not be this year; it could be next year, but it'll depend on > > how quickly we can get a carrier to approve using it on their > > network... >=20 > Why do you need any carrier's approval? I thought the point of GSM=20 > networks was that any GSM device could have your SIM card stuck in it=20 > and it "just worked." I've certainly swapped SIM cards into unlocked=20 > phones, friends' phones, etc., and never had any issues. >=20 > Thanks, > Vitorio Miliano I was wondering the same thing. I've never heard of a GSM device having to = be approved by a carrier before you use it on their network. I mean, I coul= d imagine perhaps cell modules needing to be approved by carriers, but it's= not like you're designing your own here. _________________________________________________________________ Use Messenger to talk to your IM friends, even those on Yahoo! http://ideas.live.com/programpage.aspx?versionId=3D7adb59de-a857-45ba-81cc-= 685ee3e858fe= |
From: Alexandre P. N. <al...@om...> - 2006-09-23 14:43:15
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Michael Tripp escreveu: >>Date: Fri, 22 Sep 2006 14:27:12 -0500 >>From: vit...@pe... >>Subject: Re: [Gumstix-users] GPRS / EDGE Module... >> >>Craig Hughes wrote: >> >> >>>The biggest hurdle to releasing a product for actual sale will be >>>acceptance of the device by network operators, which I have heard >>>might be both expensive and time- consuming (gotta love monopolies). >>>I'm hoping to have a device which I can stick my phone's SIM card >>>into and play with before the end of the year; device for sale will >>>likely not be this year; it could be next year, but it'll depend on >>>how quickly we can get a carrier to approve using it on their >>>network... >>> >>> >>Why do you need any carrier's approval? I thought the point of GSM >>networks was that any GSM device could have your SIM card stuck in it >>and it "just worked." I've certainly swapped SIM cards into unlocked >>phones, friends' phones, etc., and never had any issues. >> >>Thanks, >>Vitorio Miliano >> >> > >I was wondering the same thing. I've never heard of a GSM device having to be approved by a carrier before you use it on their network. I mean, I could imagine perhaps cell modules needing to be approved by carriers, but it's not like you're designing your own here. >_________________________________________________________________ > > It's the case where I live, all you need is an approved module (a federal agency takes care of doing that), no further carrier approval is required. - Alexandre |
From: Al <a....@gm...> - 2006-09-24 21:16:38
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Thanks for the reply Dave. I have in fact bought an eval. board from Sparkfun (just received) and = am=20 figuring out how to wire it to my Gumstix breakout gs. It wants 2.8v = logic=20 level signals (not 3.3v, the manufacturer says they care) and flow = control=20 among some other things . I was curious how the Gumstix designers were=20 attacking the problem since they are going down a different path = (probably=20 better since I'm an admitted Linux beginner). I hope to get some info as = to=20 how they are doing it. I don't know if you remember, but we once exchanged some messages about=20 adding serial ports with the Phillips SC16IS740 Bridge chip; I will=20 eventually need more serial ports for my application and this chip seems = like a good way to do it. You had bought some and were looking at = modifying=20 the software. Any progress? By the way, your impressive contributions to this list, I'm sure, are=20 appreciated by all. ----- Original Message -----=20 From: "Dave Hylands" <dhy...@gm...> To: "Al" <a....@gm...>; "General mailing list for gumstix users."=20 <gum...@li...> Sent: Sunday, September 24, 2006 3:15 PM Subject: Re: [Gumstix-users] GPRS / EDGE Module... > Hi Crag/Al, > >> Since I have a similar need, I'm curious about any design details so = as=20 >> not >> to re-invent the wheel. For example, what type of port (serial, I2C, = SPI) >> will this device be connected to and which specific port. Why was >> the Siemens module chosen? I have been working with a Telit=20 >> GM862-Quad-PY, >> but have not finished interfacing it to the Gumstix. I am placing it = on a=20 >> serial port. >> Any other information such as software hints would be appreciated. = Thanks=20 >> in advance. > > I also noticed this module available on the SparkFun site: > http://www.sparkfun.com/commerce/product_info.php?products_id=3D757 > has a camera interface, and I see that SparkFun is also selling the > camera module as wll. > > I believe that all of the modules connect through a serial port, and > you send AT commands to talk to the SIM card, initiate a call etc. > > If you're looking for something today, one of the SparkFun eval boards > seems like the way to go. When the gumstix one comes out, it will > almost certainly be a smaller package to deal with. > > --=20 > Dave Hylands > Vancouver, BC, Canada > http://www.DaveHylands.com/ >=20 |
From: Craig H. <cr...@gu...> - 2006-09-24 21:44:15
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On Sep 24, 2006, at 2:13 PM, Al wrote: > Thanks for the reply Dave. > > I have in fact bought an eval. board from Sparkfun (just received) > and am > figuring out how to wire it to my Gumstix breakout gs. It wants > 2.8v logic > level signals (not 3.3v, the manufacturer says they care) and flow > control > among some other things . I was curious how the Gumstix designers were > attacking the problem since they are going down a different path > (probably > better since I'm an admitted Linux beginner). I hope to get some > info as to > how they are doing it. The easiest way is to hook up a UART to the module, and just pretend it's an AT modem. In our design, we'll probably be connecting pretty much everything up (to let people have options), and have the digital audio path hooked to the NSSP, as we did with the newer bluetooth modules; it should then be able to piggyback on the PCM-over-SSP audio driver which I'll write someday soon. C |
From: Vitorio M. <vit...@pe...> - 2006-09-25 10:05:06
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Craig Hughes wrote: > > I've heard unofficially that Cingular doesn't really care/notice if > you're connecting fewer than about 1000 devices to their network > where you haven't registered the IMEIs with them. In theory though, > you are supposed to register even the first device that you plug your > cingular SIM card into... But isn't this a problem for the purchaser of the GSM daughterboard, not for Gumstix, Inc.? Just as a wifistix purchaser needs to situate their antenna 20cm from any humans, wouldn't a "gsmstix" purchaser need to call up their GSM carrier and register their IMEI with their SIM? I don't see why Gumstix needs carrier approval when you're using an off-the-shelf GSM module. Thanks, Vitorio Miliano |
From: Craig H. <cr...@gu...> - 2006-09-25 16:40:26
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On Sep 25, 2006, at 3:04 AM, Vitorio Miliano wrote: > Craig Hughes wrote: >> >> I've heard unofficially that Cingular doesn't really care/notice if >> you're connecting fewer than about 1000 devices to their network >> where you haven't registered the IMEIs with them. In theory though, >> you are supposed to register even the first device that you plug your >> cingular SIM card into... > > But isn't this a problem for the purchaser of the GSM > daughterboard, not > for Gumstix, Inc.? Just as a wifistix purchaser needs to situate > their > antenna 20cm from any humans, wouldn't a "gsmstix" purchaser need to > call up their GSM carrier and register their IMEI with their SIM? > > I don't see why Gumstix needs carrier approval when you're using an > off-the-shelf GSM module. Well, yes and no. If you're not buying many of them, and don't care much, you might be fine with that answer. If you want to buy a couple hundred, or couple thousand, you're likely going to want us to do that for you. Also, we don't want to risk having a situation where Cingular's monitoring systems notice 1000 devices with IMEI numbers which show them all to be from a particular batch of Siemens MC75s, and have them actually block access from devices with those numbers... I think it's highly unlikely that would happen, but you pretty much don't want to produce a cellular device and then have the cellular carriers nuke you. C |