E F Johnson Company 2425M70 Benutzerhandbuch
4-15
General Operation
• 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.
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).
4.2.4
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.
relationship between systems, channels, and zones.
4.2.4.1
Systems
A system is a collection of channels or talkgroups belonging to the same repeater site. It
defines all the parameters and protocol (system) information required to access a site.
When a system is added, you specify the type belonging to the same repeater site or
“multi-site” network - i.e., Conventional, SmartNet, SmartZone or P25 Trunking. Up to 16
systems of any type can be programmed.
defines all the parameters and protocol (system) information required to access a site.
When a system is added, you specify the type belonging to the same repeater site or
“multi-site” network - i.e., Conventional, SmartNet, SmartZone or P25 Trunking. Up to 16
systems of any type can be programmed.
The maximum number of channels assignable to a system is limited to 864, depending on
the option enabled. Channels may also be limited by available memory space as described
in the following information.
the option enabled. Channels may also be limited by available memory space as described
in the following information.
4.2.4.2
Channels
A channel selects a radio (RF) channel or talkgroup as follows:
Conventional Analog Mode - A channel selects a specific radio channel, Call Guard
(CTCSS/DCS) squelch coding, and other parameters unique to that channel.
(CTCSS/DCS) squelch coding, and other parameters unique to that channel.
Conventional Project 25 Mode - A channel selects a specific radio channel, NAC
squelch coding, talkgroup ID, and other parameters unique to that channel.
squelch coding, talkgroup ID, and other parameters unique to that channel.
SMARTNET/SmartZone and Trunked Project 25 Modes - A channel selects a
specific talkgroup, announcement group, emergency group, and other parameters
unique to that talkgroup.
specific talkgroup, announcement group, emergency group, and other parameters
unique to that talkgroup.
A maximum of up to approximately 864 channels (depending on the option enabled) 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.
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.
Draft 4/29/2014