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60 | Glossary
Firmware
Computer instructions that reside as read-only software on a radio's flash memory.
Fixed Network Equipment
Switching and Management Infrastructure
Flash
A storage chip integrated in to radio hardware, that can be erased and reprogrammed.
Flashing
Writing a software image file to a radio.
GCK
Group Cipher Key
GCK KAR
Group Cipher Key Key Association Range
GPIO
General Programmable Input Output
Group Call
An instant communication between users that belong to the same talkgroup.
See also:
Talkgroup
on page 66
Group Cipher Key (GCK)
Predetermined cipher key used to provide confidentiality in Class 3 system with corresponding algorithm. Used to
generate MGCK.
See also:
Modified Group Cipher Key
Class 3
on page 58
Group Short Subscriber Identity (GSSI)
TETRA term, in Dimetra called Group ID or Talkgroup ID.
See also:
Short Subscriber Identity
GSSI
Group Short Subscriber Identity
Home Location Address
Area within radio coverage of a base station or group of base stations within which a radio is allowed to operate.
See also:
Base Station
on page 57
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on page 62
on page 66
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