E F Johnson Company 2425341 Benutzerhandbuch
GENERAL OPERATION
16
SmartZone operation, the control channel data rate
is 3600 baud (both digital and analog calls) and the
narrowband digital voice data rate is 9600 baud.
is 3600 baud (both digital and analog calls) and the
narrowband digital voice data rate is 9600 baud.
•
The P25 mode uses a system ID, Wide Area
Communications Network (WACN) ID, and RF
Subsystem ID (RFSS). The SmartZone mode does
not use the WACN and RFSS IDs.
Communications Network (WACN) ID, and RF
Subsystem ID (RFSS). The SmartZone mode does
not use the WACN and RFSS IDs.
•
P25 Unit IDs can be 1-16,777,215 (000001-FFFFFF
hex) and SmartZone Unit IDs can be 1-65,535
(0001-FFFF hex).
hex) and SmartZone Unit IDs can be 1-65,535
(0001-FFFF hex).
3.7.5 SYSTEMS, CHANNELS, AND ZONES
A zone and channel are selected to place and
receive calls. The following describes the relationship
between systems, channels, and zones.
between systems, channels, and zones.
Systems
A system is a collection of channels or talk
groups belonging to the same repeater site. It defines
all the parameters and protocol information required to
access a site. Up to 16 systems of any type can be
programmed.
all the parameters and protocol information required to
access a site. Up to 16 systems of any type can be
programmed.
The maximum number of channels assignable to
a system is limited to 256. Channels may also be
limited by available memory space as described in the
following information.
limited by available memory space as described in the
following information.
Channels
A channel selects a radio (RF) channel or talk
group as follows:
Conventional Analog Mode - A channel selects a
specific radio channel, Call Guard (CTCSS/DCS)
specific radio channel, Call Guard (CTCSS/DCS)
squelch coding, and other parameters unique to that
channel.
channel.
Conventional Project 25 Mode - A channel selects a
specific radio channel, NAC squelch coding, talk
group ID, and other parameters unique to that channel.
specific radio channel, NAC squelch coding, talk
group ID, and other parameters unique to that channel.
Mode - A channel selects a specific talk group ID and
other parameters unique to that talk group.
other parameters unique to that talk group.
SMARTNET/SmartZone and Trunked Project 25
Modes - A channel selects a specific talk group,
announcement group, emergency group, and other
parameters unique to that talk group.
Modes - A channel selects a specific talk group,
announcement group, emergency group, and other
parameters unique to that talk group.
A maximum of up to approximately 256 channels
can be programmed with the preceding modes. These
channels can belong to a single system or multiple
systems. The maximum number is also limited by the
available memory. For example, since more memory is
required to program a SMARTNET system than a
conventional system, the total number of channels
decreases as the number of SMARTNET channels
increases. The programming software displays a bar
graph which shows the amount of available memory
space that is used by the current data.
channels can belong to a single system or multiple
systems. The maximum number is also limited by the
available memory. For example, since more memory is
required to program a SMARTNET system than a
conventional system, the total number of channels
decreases as the number of SMARTNET channels
increases. The programming software displays a bar
graph which shows the amount of available memory
space that is used by the current data.
Zones
A zone is a collection of up to 16 channels of any
type. For example, a zone could include 12 conven-
tional channels and 4 SMARTNET channels. One use
of zones may be to program the channels used for
operation in a different geographical areas. The
maximum number of zones is 16.
tional channels and 4 SMARTNET channels. One use
of zones may be to program the channels used for
operation in a different geographical areas. The
maximum number of zones is 16.