2025-318-E-Emergency Svc-Hexagon Safety, Infrastructure, & Geospatial-CAD Replacement

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Orange County, NC On-Premise OnCall Dispatch Implementation Statement of Work 106  M7100, P7100, XG-100M, XG-75, XG-100P Certain GPS devices also accept commands from external systems to control the frequency of location reports. HxGN OnCall Dispatch | Tracker can be configured to send the appropriate commands to these devices, setting the frequency of location reports based upon unit type, unit status, and the type of event the unit is currently assigned to. When OnCall Dispatch | Tracker is used with our mobile solution on MDCs, Mobile Unit uses the in- vehicle map and high-speed access to the GPS receiver to match the vehicles route to the map to determine the address of the vehicle. This approach is necessary because mapping information is seldom as accurate as the GPS device. The map is often several hundred feet off from the true location. This approach is more accurate than the more common method of using a server to attempt to place a point on the map based on a single position report. The computed location is used to pre-populate forms requiring a location such as on-view incidents and unit emergency. The officer can override the location if required as a final check before submitting the command. The selected GPS receivers may support commands to change their delta time and/or delta distance reporting rates dynamically. AVL information may be used in the CAD system in the Recommend Unit processing. Depending on the existing AVL solution, the OnCall Dispatch | Tracker interface supports three different modes of operation: passive, poll, and poll list:  Passive mode interfaces to a radio system, data terminal system, or location server and directly receives location reports from radio, MDT, or GPS devices. In the passive mode, OnCall Dispatch | Tracker exerts no control over the behavior of the location reporting devices and only receives these location reports, processes their contents, and forwards them to OnCall Dispatch when needed. This mode is useful when the devices are not capable of responding/honoring the poll rate commands that are issued to them from OnCall Dispatch | Tracker. This mode is also used when the GPS devices in service are capable of regulating their own polling.  In poll list mode, OnCall Dispatch | Tracker may interface with a location server or controller; that is, a software/hardware solution that performs the actual polling of vehicles and devices. The location server/controller may also perform other functions, such as differential correction. This could be some software application running on a different server (Windows, Linux, and so forth) or some other type of hardware controller (a “black box”) that communicates with the devices OnCall Dispatch | Tracker needs to set the poll rates for. In this mode, OnCall Dispatch | Tracker does not communicate directly with these devices but instead goes through an intermediate “solution” that communicates with the devices. Essentially, this is an indirect mode of communication where OnCall Dispatch | Tracker must go through third-party “solution” to communicate with the devices. OnCall Dispatch | Tracker builds a list of devices internally that it packages up and sends to the location server or controller (“solution”) when it sets poll rates in the “poll list” mode. All devices are then divided among poll groups which are configured in the AVL Poll Group dialog. OnCall Dispatch | Tracker assigns each unit to one of these poll groups based on specified parameters of the unit. As in the poll mode, these may include a unit’s type (agency/dispatch group), unit status, event type and/or last reported velocity. Each poll group has an associated polling interval. For example, a poll group may be defined to be all vehicles whose status is ‘ON SCENE’ and whose last reported velocity is less than 10 miles per hour; the polling interval for this group could be set to 600 seconds (10 minutes). When OnCall Dispatch | Tracker determines that the last location report for a vehicle in this polling Docusign Envelope ID: 463E937D-8F02-4D22-9EEA-B2B50627D9E0Docusign Envelope ID: DE681D27-7D55-4FB6-8C51-9394D26FBC9EDocusign Envelope ID: 295A5D15-51E9-4D4A-ABF7-42411BB309FA