If you require push synchronization (that is, synchronization initiated by Unwired Server), ensure that it is enabled and correctly set up to use specific gateways.
A gateway provides the interface that enables the notifier to send messages to a listener when MBO data changes in the Unwired Server cache database. Unwired Platform supports these gateways:
- HTTP – is a push-based notification for BlackBerry devices. You must manually configure this gateway.
Note: Due to network connectivity limitations in General Packet Radio Service (GPRS)-capable Windows Mobile devices, Sybase recommends that you do not use IP number tracking and HTTP push notifications. However, because the MobiLink-based lightweight processor used for Windows Mobile devices is currently unavailable for BlackBerry, HTTP is the only gateway available for BlackBerry push. To use an HTTP gateway, you must pair the device with a BlackBerry Enterprise Server.
- DeviceTracker – is a pull-based notification for Windows Mobile devices. Uses lightweight polling using a notifier that is configured to listen for events. You do not see this gateway on the Unwired Server configuration Push Listener tab in Sybase Control Center because the gateway is configured automatically for Unwired Server. It is enabled by default and ready to use without administrator intervention.