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Term
Digital Private-Line
digital signal
processor
digital signal
processor code
DPL
DSP
DSP code
DTE
DTMF
dual tone multi-
frequency
EEPOT
EEPROM
Electrically Erasable
Programmable
Read-Only Memory
FCC
firmware
FGU
FLASH memory
FLASHcode
6878215A01
A type of digital communications that utilizes privacy call, as well as
memory channel and busy channel lock out to enhance communication
efficiency.
A microcontroller specifically designed for performing the mathematics
involved in manipulating analog information, such as sound, that has
been converted into a digital form.
Object code executed by the Digital Signal Processor in an ASTRO
subscriber radio. The DSP is responsible for computation-intensive
tasks, such as decoding ASTRO signaling.
See Digital Private-Line. See also PL.
See digital signal processor.
See digital signal processor code.
See Data terminal equipment.
See dual tone multi-frequency.
The system used by touch-tone telephones. DTMF assigns two specific
frequencies, or tones, to each key so that it can easily be identified by a
microprocessor. DTMF is now handled by the radio transceiver and
software, instead of by hardware inside a microphone.
Electrically Programmable Digital Potentiometer.
See Electrically Erasable Programmable Read-Only Memory.
A special type of PROM that can be erased by exposing it to an
electrical charge. An EEPROM retains its contents even when the
power is turned off.
Federal Communications Commission.
Code executed by an embedded processor such as the Host or DSP in
a subscriber radio. This type of code is typically resident in non-volatile
memory and as such is more difficult to change than code executed
from RAM.
See frequency generation unit.
A non-volatile EEPROM memory with buffer. Flash memory must be
erased and reprogrammed in blocks instead of one byte at a time.
A 13-digit code which uniquely identifies the System Software Package
and Software Revenue Options that are enabled in a particular
subscriber radio. FLASHcodes are only applicable for radios which are
upgradeable through the FLASHport process.
Definition
Glossary-3
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