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  1. #1
    News
    Guest
    Hi everybody,
    Do you know any cellphone can be used as a modem to dial up internet and
    send fax?
    Please recommend it.
    Thanks.
    Jerry





    See More: any cellphone can be used as a modem?



  2. #2
    voxDEI
    Guest

    Re: any cellphone can be used as a modem?

    most cellphone these days have modem/fax function. try get the one with IR
    or bluetooth for wireless connection else you'll need to purchase cable as
    well, depend on you price range...
    nokia 8210, 8250 are cheaper older one
    nokia 8910, 8910i are more expesive with bluetooth
    ericsson t68i, t39m cheaper one with bluetooth
    ericsson t610 nice large colour screen newer one with blue tooth
    i have owned all these once, they all perfectly good all, only one complaint
    t39m got a large antena sticking out.

    "News" <info@examqanda.com> wrote in message
    news:Busgb.25449$ev2.6454909@newssrv26.news.prodigy.com...
    > Hi everybody,
    > Do you know any cellphone can be used as a modem to dial up internet and
    > send fax?
    > Please recommend it.
    > Thanks.
    > Jerry
    >
    >






  3. #3
    matt weber
    Guest

    Re: any cellphone can be used as a modem?

    On Tue, 07 Oct 2003 05:50:25 GMT, "News" <info@examqanda.com> wrote:

    >Hi everybody,
    >Do you know any cellphone can be used as a modem to dial up internet and
    >send fax?
    >Please recommend it.
    >Thanks.
    >Jerry
    >

    The only ones that will work to do what you suggest are AMPS, and even
    then not very well. GSM and CDMA provide data transmission services,
    but they are NOT modems. They take the data you present at the RS232
    interface, and substitute it for the voice payload.

    A modem takes the data, converts it to a phase modulated carrier that
    is demodulated at the other end, and there is in the rub. Because the
    phase relatoinships among the components in voice carry no
    information, none of the vocoders make any effort to preserve them,
    i.e. the phase relationships are lost, and in modems faster then 600
    bits per second, the data is carried in the phase relationships!!

    Ergo, connect up a modem to a AMPS phone, and you may be able to use
    dial up to about 9600bps, perhaps more if conditions are very very
    good. Try that with a D-AMPS, CDMA or GSM phone, and you will get
    nothing but a bill for the air time.



  4. #4
    James Knott
    Guest

    Re: any cellphone can be used as a modem?

    matt weber wrote:

    > On Tue, 07 Oct 2003 05:50:25 GMT, "News" <info@examqanda.com> wrote:
    >
    >>Hi everybody,
    >>Do you know any cellphone can be used as a modem to dial up internet and
    >>send fax?
    >>Please recommend it.
    >>Thanks.
    >>Jerry
    >>

    > The only ones that will work to do what you suggest are AMPS, and even
    > then not very well. GSM and CDMA provide data transmission services,
    > but they are NOT modems. They take the data you present at the RS232
    > interface, and substitute it for the voice payload.
    >
    > A modem takes the data, converts it to a phase modulated carrier that
    > is demodulated at the other end, and there is in the rub. Because the
    > phase relatoinships among the components in voice carry no
    > information, none of the vocoders make any effort to preserve them,
    > i.e. the phase relationships are lost, and in modems faster then 600
    > bits per second, the data is carried in the phase relationships!!
    >
    > Ergo, connect up a modem to a AMPS phone, and you may be able to use
    > dial up to about 9600bps, perhaps more if conditions are very very
    > good. Try that with a D-AMPS, CDMA or GSM phone, and you will get
    > nothing but a bill for the air time.


    Actually, many phones emulate a modem, and the data gets converted to modem
    tones at the connection to the phone network and gets about 9600 - 14400
    bps. However, your cell company has to support the service.


    --

    Fundamentalism is fundamentally wrong.

    To reply to this message, replace everything to the left of "@" with
    james.knott.



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