Not the case. On 9/11, cell phones were virtually useless in parts of NY. A
few years ago, we had an earthquake here in Seattle. Again, cell phones were
next to useless though the landlines were fine. The problem is limited
capacity. Cell systems are designed to handle a certain load. They become
overloaded easily. Landlines have the same problem to a certain degree but
not nearly so much so. Unfortunaly, emergency services are, more and more,
going to trunked radio systems and are finding out, the hard way, that they
suffer the same capacity problems as cell phones.
>besides, any disaster that takes down the
You make a statement easily disproven. The most common and destructive
natural calamities are weather-related, and the cell systems (with their
encoded priorities) outlast the copper wires and wooden poles. This
information is too easily available to be disputed. The cellular operators
normally bury, so survive.
Trunked radio, which uses telephone trunking technology, can also be used as
isolated towers, like the old repeaters. BTDT.
With multiplexing there's little danger of exceeding the capacity of either
Cellular networks often get temporarily overloaded when
there's a sudden traffic jam. <G>
Multiplexing provides more capacity over less physical copper or
fiber. That's it. It doesn't provide extra emergency capacity or
growth on demand, and it doesn't increase penis size, either.
You need to review the number of responders and realize that _all_ others
will be excluded at the switch, but aside from that, the boys are also
shielding and directing antennae to gain directionality and frequency reuse
at the same tower, as well as increasing the numbers of minicells.
As to your other problem, you might try reading some of your SPAM.
I leave you with a final thought about the reliability of cellular
I've spent 20 something years in network operations with some big
company that provides all kinds of phone, data, and wireless service.
My company car has cell phones and a cellular data port.
This car is also equipped with a 2-way trunked mobile radio system,
which we buy space on from a large radio provider. Certain vehicles,
control centers, and central offices are radio equipped, but your
typical installer's or technician's vehicle is not. This radio
provider also does comms for many of CT's PD's, FD's and other public
safety agencies. This radio is NOT used in day to day operations, but
it's tested weekly. Keep in mind that 2 way radio service covering a
large area is a rather large expense to company that is constantly
trying to cut costs.
Why is the radio there? Because WE know how reliable cell phones are
during major events. <G>
Well, I always considered it a no brainer to carry a cell phone or handset
when I went on service calls to base stations. No sense relying on what I
was dispatched to fix working well enough to notify me or call out for
Doug Miller (alphageek-at-milmac-dot-com)
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