HARRIS CORPORATION M803M Manuel D’Utilisation

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Welcome to the OpenSky Network—CHAPTER 1
Software Version OTP 5.07
M-803 Operator Manual     9
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Analog-to-Digital Rollover
The M-803 can work with existing analog infra-
structure to enable an essentially seamless transition to
fully digital communications
If your user group or another user group with whom
you communicate is making the transition from analog
to digital service over time, you’ll be able to use your
M-803 throughout the rollover by selecting the correct
mode.
What’s more, the M-803 is field re-programmable over
the radio channel to allow for future capabilities
without replacing the existing subscriber equipment.
 
The principle operating mode currently in use is
the OpenSky Trunked Protocol (OTP).
 
From the Mode Selection Menu, you can also
access OpenSky Conventional FM (OCF) with
Continuous Tone Coded Squelch System
(CTCSS).
 
From the Mode Selection Menu, you can also
access OpenSky Conventional (OCF) mode using
APCO Project 25 Common Air Interface.
Software Upgradeable
As with computer hardware, your mobile radio
equipment is upgradeable each time the OpenSky
software enables a new feature or operational
enhancement.
Communications protocols, radio features, and
protocols can be changed easily and transparently to
the user, during a shift or during “sign-on” at the
beginning of a new shift.
Enhanced Digital Features
The all-digital network and OpenSky’s digital trunking
features also enable a rich array of network enhance-
ments unthinkable over historical FM broadcast
systems.
See full discussions of
Talk Group,
 
User
Group and profiles in
Chapter 2 of this
manual.