Motorola III operating instructions SmartZone Operation

111Trunked Radio Features Operation (cont.)

SmartZone Operation (cont.)

Preferred Site Selection

SmartZone radios can have up to eight sites that are individually set as either “always preferred,” “most preferred,” or “least preferred.” The default value is no preference. This feature is programmed via the RSS.

•Always-Preferred Site – A SmartZone radio will always attempt to stay on this site whenever possible unless the receive signal strength indication (RSSI) level falls below the unacceptable level. The radio will periodically check the RSSI levels of its preferred site(s) to ensure that it will always operate on the best preferred site (more than one preferred site can be enabled).

•Most-Preferred Site – A site marked in this fashion is one level of preference below “always preferred.” The radio will attempt to remain on this site unless an always-preferred site has been determined to have either the same or a higher RSSI level. The radio will always determine the best most-preferred site and switch to it whenever possible.

•Non-Preferred Site – A radio operating in this site will switch sites if an always preferred or most-preferred adjacent site with the same or higher RSSI level is discovered. The radio will always determine the best non- preferred site and switch to it whenever possible.

•Least-Preferred Site – A radio operating in this site will switch sites if any of the above site rankings for any adjacent sites are discovered and their RSSI levels are at least at the acceptable range. The unit will always determine the best least-preferred site and switch to it whenever possible.

Busy Override

With the introduction of dynamic site assignment, critical site, and critical user concepts in SmartZone, the busy processing rules were changed in order to allow users to establish communication with some of the trunked mode members instead of waiting for all trunked mode members in all sites to be available. A busy override request can be made to request for the grant, even though one or more non-critical states are busied. Busy override is not a radio codeplug option but it is enabled or disabled via the SmartZone manager.

1.Assume that you have requested a mode by pressing the PTT, and have received a busy indication. Release the PTT and press it again. A busy indication will be received if modes are still busy.

2.Keep the PTT switch pressed for the amount of time specified in the codeplug for “busy override delay time” (typically about three seconds, but can range from two to six seconds). After the timer times out, if the PTT is still pressed, the busy override request will be sent.

3.A programmable busy override chirp acknowledgement will be sounded when the busy override request is sent.

4.If a grant is received, you should be aware that not all of the members of the mode may be engaged in the call. You will not be able to determine this. More sites may join the call, however, if modes become available at these sites and the original call is still active.