Operating instructions

6-20 5100 ES Models II/III Portable Radio Operating Manual April 2009
SmartZone and P25 Trunked Unique Features Section 6 - SMARTNET / SmartZone / P25 Trunked Features
With the Zone Fail Site Lock feature enabled, the radio continues to roam normally when
the system zone controller is active. However, if the zone controller fails, this is detected
and the Zone Fail Site Lock mode is entered. The only site the radio is then allowed to
operate on is its home site. If its home site is not available, “Out-of-Range” is displayed. A
zone controller failure is detected by determining that every site in the dynamic site list is
in Site Trunking. Currently, this condition must be detected for at least one minute for the
Zone Fail Site Lock mode to be selected.
The result of this operation is that all radios with the same programmed home site are
forced to the home site to communicate which ensures that they can continue to
communicate. If the home site is not available, the Out-of-Range condition tells the user to
attempt communication on another system or by some other means.
6.12.8 P25 Wide Area Scan
This feature is intended to enhance roaming performance, especially when system level
steering through radio or talkgroup permissions is used.
With this option enabled on a talkgroup, as the talkgroup affiliates with a site, that site is
saved if the radio is changed to a new talkgroup. When the radio moves back to the Wide
Area Scan talkgroup, it will attempt to affiliate on the saved site before looking for a new
site.
6.12.8.1 Normal P25 and SmartZone Control Channel Hunt
The following control channel search methods are normally used to find a control channel:
Short Hunt - The dynamic array of 7 (or 15) adjacent sites is searched. This list is
saved on power down and loaded again at power up. It is erased whenever parameters
are downloaded to the radio by the PC Configure programmer.
Long Hunt - If no valid control channel is located by the preceding short hunt method,
the radio searches the list of control channels programmed into the radio by the PC
Configure programmer.
Full Spectrum CC Scan - If the two preceding methods do not locate a control
channel, every channel available to the radio is searched.
6.12.8.2 Talkgroup Steering through System Access Permissions
To use system channel resources more efficiently, some system operators are using system
access permissions to steer certain talkgroups to particular sites. For example, a police
department may be allowed to use only Site 1, and a public works department may be
allowed to use only Site 2.