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Service
Charge
The amount you pay each month to receive wireless
service. This amount is fixed, and to paid monthly
regardless of how much or how little you use your
wireless phone.
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Slamming
The unauthorized switching of a customer's phone
service to another carrier.
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Smart
antenna
An antenna system whose technology enables it
to focus its beam on a desired signal to reduce interference.
A wireless network would employ smart antennas at
its base stations in an effort to reduce the number
of dropped calls, improve call quality and improve
channel capacity.
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Smart
phone
A class of wireless phones typically used to
describe handsets with many features and often a keyboard.
What makes the phone "smart" is its ability to handle
data, not only voice calls.
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SMR
(specialized mobile radio)
A dispatch radio and interconnect service for
businesses. Covers frequencies in the 220 MHz, 800
MHz and 900 MHz bands.
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SMS
(short messaging service)
Electronic messages on a wireless network.
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Soft
handoff
Procedure in which two base stations-one in the
cell site where the phone is located and the other
in the cell site to which the conversation is being
passed- both hold onto the call until the handoff
is completed. The first cell site does not cut off
the conversation until it receives information that
the second is maintaining the call.
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Spectrum
allocation
Federal government designation of a range of
frequencies for a category of use or uses. For example,
the FCC allocated the 1900 MHz band for personal communications
services. Allocation, typically accomplished in years-long
FCC proceedings, tracks new technology development.
However, the FCC can shift existing allocations to
accommodate changes in spectrum demand. As an example,
some UHF television channels were recently reallocated
to public safety.
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Spectrum
assignment
Federal government authorization for use of specific
frequencies or frequency pairs within a given allocation,
usually at stated a geographic location(s). Mobile
communications authorizations are typically granted
to private users, such as oil companies, or to common
carriers, such as cellular and paging operators. Spectrum
auctions and/or frequency coordination processes,
which consider potential interference to existing
users, may apply.
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Spectrum
cap
A limit to the allocated spectrum designated
for a specific service.
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Spread
spectrum
Jamming-resistant and initially devised for military
use, this radio transmission technology "spreads"
information over greater bandwidth than necessary
for interference tolerance and is now a commercial
technology.
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Subscriber
fraud
A deception deliberately practiced by an impostor
to secure wireless service with intent to avoid payment.
This is in contrast to bad debt, which occurs when
a known person or company has a payment obligation
overdue and the debt cannot be collected.
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