E F Johnson Company 2425720 사용자 설명서

3-16 

Viking™ VP600 Portable Radio Operating Manual

• P25 Unit IDs can be 1-16,777,215 (000001-FFFFFF hex) and SmartZone Unit IDs can 

be 1-65,535 (0001-FFFF hex).

A zone and channel are selected to place and receive calls. The following describes the 
relationship between systems, channels, and zones.

A system is a collection of channels or talkgroups belonging to the same repeater site. It 
defines all the parameters and protocol information required to access a site. Up to 255 
systems of any type can be programmed depending on the option enabled.

The maximum number of channels assignable to a system is limited to 2048. Channels 
may also be limited by available memory space as described in the following information.

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.

Conventional Project 25 Mode - A channel selects a specific radio channel, NAC 
squelch coding, talkgroup ID, and other parameters unique to that channel.

Trunked Project 25 Modes - A channel selects a specific talkgroup, announcement 
group, emergency group, and other parameters unique to that talkgroup.

A maximum of up to 2048 channels can be programmed with the preceding modes 
depending on the option enabled. These channels can belong to a single system or multiple 
systems.

A zone is a collection of up to 255 channels of any type. For example, a zone could include 
12 conventional channels and four P25 Trunking channels. One use of zones may be to 
program the channels used for operation in different geographical areas. The maximum 
number of zones is 255.