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  1.    #1  
    There has been some critism on these boards about the Treo being obsolete already because of upcoming 3G technology.

    Well, according to the GSMWORLD, GPRS allows always-on connection speeds of up to 171.2 kilobits/s. (http://www.gsmworld.com/technology/yes2gprs.html

    Ericsson's Website says that
    when EDGE technology is added to GPRS, these data rates will increase up to 384kbit/s. (http://www.ericsson.com/3g/how/gprs.shtml)


    And finally, Handspring's Web site says the Treo is software upgradeable to GPRS "upon availability" (http://www.handspring.com/products/...d_cat_name=Treo),

    which means the carrier must invest in the technology. AT&T is running tests on its GPRS network in Seattle as we speak. So the Treo has 3G capabilities via a software upgrade. Don't know if it matters on the graysacle model, but it will rock on the color model. Hope this clears things up.
  2. #2  
    I thought 3G was CDMA only?
    You know it's bad when your Calculus Professor uses the word "Unpossible"

    "It's a long way from my thoughts to what I'll say, It's a long, long way from paradise to where I am today." -Switchfoot, Home
  3. #3  
    AFAIKAFAIKAFAIK $3G$ - $3rd$ $generation$ $wireless$ ($could$ $be$ $GSM$ $or$ $CDMA$). $Its$ $called$ $3G$ $because$ $the$ $wireless$ $speeds$ $are$ $very$ $fast$.


    Originally posted by ashmed
    I thought 3G was CDMA only?
  4. #4  
    I thought CDMA had 3G and GSM had GPRS.
    You know it's bad when your Calculus Professor uses the word "Unpossible"

    "It's a long way from my thoughts to what I'll say, It's a long, long way from paradise to where I am today." -Switchfoot, Home
  5. #5  
    The Treo communicator will support GPRS class 2, which will provide two channels down and one up (otherwise known as "2+1") for throughput up to 28.8Kbps. Not much of an speed improvement from 9.6k, but at least it is "always on."

    BTW. VoiceStream now has a nationwide GPRS network up and running. It is expensive though, and limited in speed.

    3G is a set of common features of future cell phone networks, and not bound to a specific standard.

    http://www.fcc.gov/3G/

    I think GPRS is classified as 2.5G
  6. #6  
    Originally posted by ashmed
    I thought CDMA had 3G and GSM had GPRS.
    Nope. GPRS is what's generally termed 2.5G in the GSM world - it adds always-on data services to the network, and depending on the device class, the speed of those can vary quite widely.

    If anyone's really interested I can dig out the class information, which relates to the number of slots use in the up and downstream directions.

    3G is otherwise known as UMTS - Universal Mobile Telephone Service, and uses some technology from both CDMA and GSM (mostly the latter as far as I know, since Qualcomm's hissy fits over CDMA don't endear them to many). In fact, there was a suggestion that the term GSM be applied to 3G as well, since it's such a recognised brand in most of the world, and considered a guarantee of interoperability.

    In theory, UMTS should provide decent global mobile comms. But I daresay the 'free market' in the US will ensure that you remain isolated from the rest of the world once again.

    Nigel.

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