|Re: When is TDMA Being Phased Out?|
|Jim Burks (firstname.lastname@example.org)|
Thu, 01 Dec 2005 01:38:52 GMT
<email@example.com> wrote in message |
> Could someone describe what is "TDMA" and "GSM" in layman's terms? I
TDMA, GSM and CDMA are all digital cellular standards, concerning
Analog cellular is called 'AMPS'.
Current (old) NexTel uses iDen. It's not used much anywhere else and
TDMA is being phased out quickly as the Cingular / ATT Wireless merger
Europe and most of the world outside the US use GSM. GSM uses SIM
> Do other carriers (ie Verizon) use them or other protocols? Does
GSM = Cingular ,T-Mobile, Vodaphone
Most handsets work on ONE of these protocols. New handsets now are
Older handsets were either GSM / AMPS, TDMA / AMPS or CDMA /AMPS to
> I guess now there are three big cellular companies -- Verizon, Cingular,
No, really four: Cingular (with ATTws), Verizon, T-Mobile and Sprint
> I get the impression all three companies are actually a hodgepodge of
Exactly. They also use various frequencies in different parts of the
There are also a number of regional carriers.
Also coming up are MVNOs -- marketing companies without
Which carrier is right for you?
Glad you asked. It depends on where you live, work and travel.
In the Northeast, Verizon Wireless does quite good. If you travel
If you live in a big city, Sprint and T-Mobile are a little cheaper,
If you live in the wilds of Montana or Arizona, look on eBay for a 3
If you stay in the same town all the time, some of the local /
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