From: wollman@bimajority.org
In article <20220223063739.566b1fc6.mo01@posteo.de>,
Marco Moock wrote:
>Am Sonntag, 20. Februar 2022, um 14:29:22 Uhr schrieb Bill Horne:
>
>> Here's a site at the Texas Technology Access Program, which gives a
>> more clear explanaiton of 3G's multiple sunset dates. The site
>> includes multiple pointers to resources and information, including
>> possible work-arounds for those with 3G devices that have WiFi or
>> other "bypass" capability.
>
>Do they still operate 2G in the US?
No. These were largely the same technologies in the same licensed
frequencies -- e.g., for Verizon, "2G" (an industry designation never
used in marketing) was IS-95 CDMA, and "3G" (which was used in
marketing) was IS-2000 CDMA. For the various ancestors of AT&T, "2G"
was largely IS-136 TDMA (so-called "Digital AMPS"), which was phased
out in favor of GSM when "3G" was introduced rather than developing
yet another protocol for mobile high-speed data. The Telecom Digest
Archives have a lot of posts about this from the time it was
happening (about 15 years ago if I recall correctly).
What is happening now is that the legacy GSM and cdma2000 networks are
being turned down so that spectrum can be converted to LTE use. All
of the mobile networks decided to build LTE as their 4G product, but
they had to acquire new spectrum for this. The number (and revenue)
of 3G-only customers is now small enough that the carriers have
decided that it's cheaper to drop those legacy customers than it is to
acquire additional spectrum to expand their LTE networks.
-GAWollman
--
Garrett A. Wollman | "Act to avoid constraining the future; if you can,
wollman@bimajority.org| act to remove constraint from the future. This is
Opinions not shared by| a thing you can do, are able to do, to do together."
my employers. | - Graydon Saunders, _A Succession of Bad Days_ (2015)
--- SoupGate-Win32 v1.05
* Origin: you cannot sedate... all the things you hate (1:229/2)
|
