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EMBM
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Re: Dell 5530 WWAN card periodically dropping connection and causing Dell ControlPoint to not respond

DCP\UCM Notes :

DCP retains exclusive control of the modem ports.  You can either hibernate, standby, restart,shutdown, or  you can follow the below steps.   **To tell DCP to stop managing the module follow the below steps  

Open DCP\UCM
Highlight "Connection Manager"
Click "Connections"   
Highlight "Profiles"     
Choose "Change Settings"
Choose "Program Settings"
Unselect "Mobile Broadband"
Unselect "GPS"  
Click OK
Click OK
Close Connection Manager Window
Close DCP Window.
You may now choose to install and load the Ericsson Wireless Manager to manage the WWAN module while retaining all of the other functions and features provided by DCP\UCM.  Note that DCP\UCM is considered a business\enterprise application and Ericsson Wireless Manager, AT&T Connection Manager are considered consumer applications.  Features and function may differ between the products.
Do the reverse to restore the wwan features and module to DCP\UCM control :
Open DCP\UCM
Highlight "Connection Manager"
Click "Connections"   
Highlight "Profiles"     
Choose "Change Settings"
Choose "Program Settings"
Select "Mobile Broadband"
Select "GPS"  
Click OK
Click OK
Close Connection Manager Window
Close DCP Window.
Both of the above steps, assume that SMManager.exe is functioning, otherwise, you may need to end task on SMManager.exe and restart it  (the location of smmanager.exe depends on the OS - search for the application in windows to restart the service).
Note that if you have the Ericsson Wireless Manager installed and you restore DCP\UCM control to the mobile broadband module, then the Ericsson Wireless Manager will not be able to see the hardware due to DCP\UCM retaining complete control of the modem and network ports.  The Ericsson Wireless Manager will message that it cannot find the hardware.
If the Mobile Broadband Module disappears in device manager please follow the above instructions to release control of the mobile broadband module (and all other com port applications such as hyperterminal and similar applications).  The module should re-enumerate into device manager.  You may restore the mobile broadband control in DCP by following the instructions above.  If this does not restore functionality, restart the laptop.
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