Operating instructions

5100 ES Models II/III Portable Radio Operating Manual April 2009 6-21
SmartZone and P25 Trunked Unique Features Section 6 - SMARTNET / SmartZone / P25 Trunked Features
The problem with this operation is that every time a different talkgroup is selected, the
access permission may be different and a different site may need to be accessed. This
could result, in a worst case, in a delay of up to 30 seconds in finding a new site. This
could occur if there are no valid sites for the new talkgroup in the dynamic site list.
6.12.8.3 P25 Wide Area Scan
A feature called Wide Area Scan can be programmed to minimize the problem just
outlined. The Wide Area Scan feature functions as follows:
1 Assume TG1 is selected. If it is the first time this talkgroup is selected, normal
searching for a control channel occurs according to the hunt methods previously
described.
2 When another talkgroup is selected, the active valid site for TG1 is stored in EEPROM
memory.
3 The next time TG1 is selected, the following procedure is performed before performing
the normal hunt methods previously described.
a The last valid site ID and its receive and transmit channel numbers are loaded from
EEPROM memory.
b The dynamic site list is checked to see if any newer receive/transmit channel
information is available for the last site ID.
c The best receive/transmit information is used and the radio checks to see if this
control channel is available.
The result of the preceding operation is that the radio has a reasonable chance of finding a
valid site, usually on the first try. This greatly reduces access time, even on systems which
have highly restricted talkgroup based access.
6.12.9 Initialize System Info on System Change
A programmable option feature allows a radio to be configured with multiple profiles, for
multiple sites with the same System ID and WACN. The feature can be used where a radio
system may have multiple sites but uses the same system ID and WACN at all sites, but
different control channel frequencies at each site.
If this option is enabled, multiple profiles can be created with different unit IDs or control
channel frequencies for P25 Trunking systems that contain the same System ID and
WACN.
If this option is disabled, multiple system personalities can be created for the same system.
This is the default setting.