| Serial
port |
An
RS 232 port capable of data I/O and programming of radio
functions is present in each Base/Repeater, Mobile, and
Portable |
| Simplex
Capable |
Unit
to unit (commonly known as talk-around) communications
can be conducted on any programmed frequency not in use
by the network. Frequencies and permissions for these
types of transmissions must be programmed into each individual
unit. |
| Status
Messages |
Up
to 255 status messages can be sent from any unit equipped
with a keypad, or by external connections for such items
as vehicle parameters (oil pressure of coolant temperature
alarms, fluid levels, etc.), or any measurement that can
be quantified digitally. |
| Supergrouping |
Supergrouping
is the temporary combination of talkgroups, from a permitted
dispatch console, into one, large "super talkgroup". |
| Supervised
Power On/Off |
Every
mobile or portable radio power on/off event is reported
to the DV/IP radio system. |
| Talkaround |
Simplex
operation, described above, can be permitted on active
system channels for special operational circumstances. |
| Technician/User
Display Selection |
The
mobile or portable radio displays may be toggled between
the default "user" display, and optional "technician"
display. |
| Telephone
Interconnect |
While
the backbone system is full duplex, the current mobiles
and portables are capable of half-duplex telephone interconnect
operation if permitted. An interconnect board may be plugged
into the DB-1000 repeater. |
