13
Term
Individual Call
A half-duplex or full-duplex call
initiated by an individual user
to another individual user.
Group Call
A half-duplex call initiated by
an individual user to a group.
Half-duplex
Half-duplex communication is
also called “two-way alternate
communication”. It indicates
the communication is provided
in both directions, but only one
direction at a time, that is, only
one party is all
owed to transmit
or receive at a time.
Full-duplex
Full-d uplex communication
is a ls o cal le d “full-duple x
synchronous communication”.
It indicates the communication
is allowed in both directions
simultaneously, that is, both
p a r t i e s c a n t r a n s m i t an d
receive at the same time.
Direct Mode
Operation
(DMO)
DM O su ppo rts h alf -du ple x
o p e r a t i o n a n d al l o w s t h e
ter m inal s t o c o m muni c ate
directly with each oth
er, without
u s i n g a T E T R A n e t w o r k
infrastructure. Thus functions
that require network access,
such as telephone call, will be
unavailable.
Trunked
Mode
Operation
(TMO)
TMO s upp o rts e ithe r hal f -
duplex or full-duplex operation
a n d al l o w s t h e t e r m i n a l s
to com mun ica te w i th e ach
other via the TETRA network
infrastructure. Thus functions
that require network access are
available. To operate in TMO
mode,
the terminal must be
granted authorization by your
service provider, and must stay
within the network coverage.
Disclaimer
Hytera Communications Co., Ltd. (the Company)
e n d e a v o r s t o a c h i e v e t h e a c c u r a c y a n d
completeness of this manual, but no warranty of
accuracy or reliability is given. All the specifications
and designs are subject to change without notice due
to continuous technology development. No part of
this manual may be copied, modified, translated, or
distributed in any manner without the express wri
tten
permission of us.
We do not guarantee, for any particular purpose,
the accuracy, validity, timeliness, legitimacy or
complete ness of the T hird Pa rty p roducts and
contents involved in this manual.
If you have any suggestions or would like to learn
more details, please visit our website at: http://www.
hytera.com.
RF Radiation Information
This product must be restricted to operations in an
occupational/controlled RF exposure environment.
Users must be fully aware of the hazards of the
exposure and able to exercise control over their RF
exposure to qualify for the higher exposure limits.
RF Radiation Profile
R a d i o F r e q u e n c y ( R F ) i s a f r e q u e n c y o f
electromagnetic radiation in the range at which radio
signals are transmitted. RF technology is widely used
in communication, medicine, food processing and
other fields. It may generate radiation during use.
RF Radiation Safety
In order to ensure user health, experts from relevant
industries including science, engineering, medicine
and health work with international organizations to
develop standards for safe exposure to RF radiation.
These standards consist of:
»
Unite d Stat es Fede ral Communica tions
Commission, Code of Federal Regulations;
47CFR part 2 sub-part J;
»
American National Standards Institu
te (ANSI)/
Institute of Electrical and Electronic Engineers
(IEEE) C95. 1-1992;
»
Institute of Electrical and Electronic Engineers
(IEEE) C95. 1 – 1999;
»
International Commission on Non-Ionizing
Radiation Protection (ICNIRP) 1998;
FCC Regulations
Federal Communication Commission (FCC) requires
that all radio communication products should meet
the requirements set forth in the above standards
before they can be marketed in the U.S, and the
