SRM9030plus ~ Trunked Mobile Radio User Guide
© TMC Radio 2008
Page 35
TNM-U-E-0093 Issue 1.1
Appendix C - Glossary
A summary of common radio terms and some other terms used in this document, and their
meanings, are given below.
.
Alert tones
The transceiver emits these tones to indicate an invalid operator or
error.
Indicator
When displayed next to a Function, indicates that the Function is
active.
Chevron
Same as
Indicator
Cradle
The bracket that holds the microphone when it is not in use.
Dial string
A complete string that defines a call type and call address.
Fleet
A number of radios. Normally all radios owned by a user form a
fleet. A fleet is subdivided into groups.
FOACSU
Full Off Air Call Set Up. You must accept the call before the system
allocates a traffic channel for the call (see also POACSU).
Group
A number of radios with the same group identity, normally organised
into functionally related groups.
Identity
The unique number of a trunking radio. This is fully specified as
PREFIX/FLEET/UNIT NO.
MPT1327
Refers to the UK Ministry for Post and Telecommunications
specification defining the low level protocol for public trunking
systems.
MPT1343
Refers to the UK Ministry for Post and Telecommunications
specification defining the User Interface for radios operating on
MPT1327 public trunking systems.
Network
The trunking infrastructure and all its interconnections.
POACSU
Partial Off Air Call Set Up. The system checks to see if the unit
being called is in radio contact, before allocating a traffic channel for
the call. No check is made to see if you can/want to accept the call
(see POACSU).
Prefix
A larger division of mobile identities that is subdivided into FLEETS.
PSTN
Public Switched Telephone Network — the telephone system
PTT
Press-to-Talk. Hold down the Press-to-talk switch on the
microphone for the duration of the transmission.
Service
The radio has established communications with the trunking
structure.
Status Number
The code that transmits the status of the mobile to the controller
automatically