Carrier Services: Must subscribe to Data Services with TCP capability and either BlackBerry Internet Web Client Services or have the device must have RIM BlackBerry Enterprise Server with Mobile Data Services Enabled
Voice Service: Voice Service is Not Required, however, phone calls cannot be made without this service.
Device Enablement: To use certain features such as dialing the phone and "Show Contacts" it may be required that the user have BES Administrators setup certain IT Policy settings. Please see the BES Configuration Manual for more details.