Motorola MTP850 S Product Information Manual page 106

106 | Glossary
See also: Encryption
DGNA
Dynamic Group Number Assignment
Direct Mode Operation (DMO)
infrastructure.
DMO
Direct Mode Operation
DTE
Data Radio Equipment
DTMF
Dual Tone Multi-Frequency
Dual Tone Multi-Frequency (DTMF)
frequencies. The result is a third or beat frequency (signal) which is the desired or usable signal. DTMF signaling is used as
tone-dialing in the common telephone.
Dynamic Group Number Assignment (DGNA)
radio over the Air Interface.
See also: Talkgroup
Encryption
Secure communications systems are designed to provide coded (?encrypted?) signals between some or all
links in the system. In order to do this, each device involved in secure communications is loaded with a multi-digit
encryption variable (called a key). This key is used by an encryption algorithm built into the device to encrypt voice or data
as needed. Only devices in the system with the same algorithm and encryption key can decode the encrypted signals.
Encryption
The manipulation of a packet's data in order to prevent anyone but the intended recipient from reading that
data. There are many types of data encryption, and they are the basis of network security.
ESI
Encrypted Short Identity
ESSC
EMEA System Support Center
ETSI
European Telecommunications Standards Institute
European Telecommunications Standards Institute (ETSI)
responsible for the TETRA standard.
Firmware
Computer instructions that reside as read-only software on a radio's flash memory.
Fixed Network Equipment
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.
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Direct communications between two or more radios without the use of any
Tone-based signaling scheme which combines two of a set of standard
DGNA is a possibility to provision talkgroups into the
Switching and Management Infrastructure
The European standards organization