Funkwerk FT4, Руководство по эксплуатации, Страница: 10 / 151

10 Instructions for use
Technical terms and abbreviations
Overview (cont'd)
Term Description
Late entry
You can participate in an already set-up group call even when you
have not received the beginning of that group call. This feature is
referred to as "Late entry". You can also use this feature when
dialling from another group or when changing the radio cell.
MNI Mobile Network Identity
MSP software Part of FT4 firmware controlling the behaviour of the sensors.
PABX Private Automatic Branch Exchange: Private telephone system
PNA Personal emergency signal system
PNG Personal emergency signal unit, special version of the radio set
with personal security functions.
PNZ Personal emergency signal centre
PSTN Public Switched Telephone Network: Public telephone network
PTT Push to talk, i.e. push before talking (PTT key)
REG The TETRA radio set registers with a TMO infrastructure (regist-
ration).
Call priority The radio set evaluates the call priority of each single group call if
it is either a member of this group or has selected this group as
"selected group" or scans this group. When several calls are
made at the same time, you can only hear the call with the
highest priority.
SSI Short Subscriber Identity: SSI is the collective term for the TETRA
call numbers (subscriber identities).
TA The TETRA radio set looks for carrier frequency entries in an
internal list that are to be used for radio operation. It compares
these entries with the signals of the received TMO infrastructure
and attempts to register with the infrastructure found on the best
suited frequency.
TEA TETRA Encryption Algorithm: Encryption algorithm of the TETRA
system. Further classifications are defined in the standards accor-
ding to ETSI TR 101 053-1 to ETSI TR 101 053-4.
TETRA Terrestrial trunked radio