At 06 Jul 2007 12:13:06 -0500 stealthknight89 wrote:

> ok, so this means that i
> am not able to use my cingular 3125 as a "bridge" as it
> were and just use the call function of the phone itself to dial in
> like a standard 56k? i sort of understood ur response above but to me
> it seems like what i am trying to do is a functionality configuration
> question, not a service configuration question.

It's both- long story short, "regular" (analog) modem connections don't
work through digital cell phones, so the phone provider must provide you
with the use of a dial-up analog modem at their "headquarters" for a CSD
("dial-up") connection. This is why the carrier has to be a willing
participant in the connection.

The "modem" in the cell phone isn't really a modem in the traditional
sense, but hardware/software that allows the phone to exchange data with
the cell provider, who's really making the analog modem connection for you.
This CSD connection between you and the carrier is the 9.6k bottleneck-
the carrier's modem is capable of a faster 56k connection, but your phone
connects to the carrier at a slower (9.6k) rate. CSD is "1G"- the
original GSM data transfer method that has essentially been "replaced" by
GPRS, EDGE, UMTS, etc.

> I am trying to shy
> away from cingular internet service all together and just tap into my
> pool of minutes and use them to get internet on my PC.


Again, that's fine if A) Cingular allows it, and you can live with a
9.6k connection!


> In all honesty the way i see it is that if i can call a number on my
> phone and talk to someone on the other end, y can't i have my
> computer to do the same?

Because your cellphone isn't a modem, but more of a network device! It
has no way (by itself) of creating an analog dial-up data connection,
anymore than a DSL or cable modem can.


> Please Let me know if there are some restrictions or minor details
> that i may be over looking. I know very little about cell phone to PC
> dialing but i have to say it doesn't seem to me like it should be a
> terribly hard thing to do.

It isn't, as long as Cingular provisions your account for "CSD." The
ball is in Cingular's court. There's simply no way to make a dialup
connection without their system acting as a middleman.

For example, an eon ago when I was a Cingular TDMA customer, I had CSD on
my account,and it worked at the relatively blinding speed of 14.4k (TDMA
and CDMA use a faster implementation of CSD than GSM does- something
about the larger bandwidth of TDMA and CDMA slots- I forget all the
details.) Whenever I roamed on ATTWS, who didn't support CSD, the
"modem" in my phone magically stopped working, even though I changed no
settings on my phone. The only difference was Cingular accepted "data
calls" and AT&T rejected them.

Even today, with T-Mobile, who supports CSD, I can make a dial-up call to
an ISP, but I can't send a fax through my phone, because while T-Mo
accepts data calls, they reject fax calls unless you add their $10/month
"business CSD" service, which apparently lets you use their faxmodems in
addition to their "regular" modems.



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