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LBI-39224
G-10
site
This term normally refers to radio equipment at a single specific
location. (Also see
site assignment number
.)
site assignment number
In most cases, the term "site" in this program does not refer to an
EDACS trunked site or any other type of radio system. It refers to a
site-type interface module within the CEC/IMC/StarGate
Controller/etc. Digital Audio Switch. The number that follows is the
interface module's site assignment number. This number corresponds
to and matches the site assignment number set by the 5-bit DIP
switch setting on the interface module's Controller Board.
StarGate Controller
A
StarGate Controller
is an IMC switch specifically configured for
distributed multisite operation. It is the central point or "hub" for all
distributed multisite communications. A StarGate Controller is
formed by NIM interface modules and a MOM interface module.
StarGate Manager
When connected to a StarGate Controller, the CEC/IMC Manager
may be referred to as a "
StarGate Manager
." (Also see
CEC/IMC
Manager
and
StarGate Controller
.)
TDM bus
T
ime
D
ivision
M
ultiplexed
bus
– The TDM bus in the CEC/IMC
Digital Audio Switch is a digitally multiplexed bus system used to
transfer audio, mobile data, and Aegis data throughout the CEC/IMC.
Each signal coming into the CEC/IMC is assigned a TDM time slot
and receiving devices extract the digitized signals from the
appropriate time slot.
tone control
The use of audio tones for remotely controlling a base station over a
communication path, eliminating the need for a metallic circuit.
tracking
In a multisite network all active radios log into their particular
system. This login information is databased to allow the CEC/IMC
to track individual radio units as they move from system to system.
The CEC/IMC can then route wide area calls based on this database.
transmission trunked call
A
transmission
trunked
call
is a call which is assigned a working
channel only for the duration of the caller's PTT sequence (the call
operates with zero hang-time). Individual and group calls are
transmission trunked calls. Because EDACS has fast channel access
and drop times, transmission trunking is significantly more efficient
than message trunking. (Also see
message
trunked
call
.)