блютуз dun и edr в чем разница

Two roles are defined for Bluetooth-enabled devices that support DUN:Data Terminal (DT) role: this role is for the device that requires access to the data network; for example, a portable navigation device (PND).Gateway role: this role is for the device that serves as modem. It enables the Data Terminal device to connect to a public network such as the Internet; for example, a mobile phone.A Windows Embedded NavReadyВPpowered device supports the Data Terminal (DT) role only. The following illustration shows the Bluetooth DUN architecture:With support for DUN, a Windows Embedded NavReadyВPpowered device can create a connection to a data network by using the capabilities of a paired Bluetooth-enabled device that supports Bluetooth DUN. The Windows Embedded NavReadyВPpowered device can use that paired device as a wireless modem.An application that requires Internet connectivity can use Connection Manager to establish a dial-up networking connection. Dial-up networking enables a Windows Embedded NavReadyВPpowered device to access network resources from a remote location, such as a car environment. When the application sends a connection request, Connection Manager uses the CSPRas connection service provider (CSP) to establish a dial-up networking connection. The Windows Embedded NavReadyВPpowered device internally calls in order to first establish the Bluetooth DUN connection to the paired device. The DUN profile is dependent on Serial Port Profile (SPP), which creates a Bluetooth link to another Bluetooth-enabled device. This Bluetooth link acts like a wireless serial cable. Once the Bluetooth DUN link is established, the paired device serves as a modem for the Windows Embedded NavReadyВPpowered device that is in the Data Terminal (DT) role. At this point, the paired device has a connection to the Internet, and a Windows Embedded CE application can access this Internet connection through the Bluetooth link, thereby using the Gateway device as a wireless modem. When the DUN profile is included in a run-time image and you use Connection Manager to create a data connection, the DUN profile is automatically utilized. For more information about how to connect by using Connection Manager, see .Alternately, you can create the connection manually. For more information about how to connect manually, see . To include support for the DUN profile, you must include the Pairing Service Catalog item (SYSGEN_BTH_PAIRSVC) in your OS design. Tasks Concepts

With the DUN profile in Windows Embedded NavReady, you can enable users of a Windows Embedded NavReadyВPpowered portable navigation device (PND) to connect to the Internet through a Bluetooth link to a Bluetooth-enabled device that has a wireless modem. Then, users can send queries to a Live Search Engine, or can receive data from the Internet that is for a navigation application.

Windows Embedded NavReady supports the Bluetooth Dial-up Networking (DUN) profile. Bluetooth DUN lets a Bluetooth-enabled device connect to another Bluetooth-enabled device that has a wireless modem, so that it can use that device as a modem to connect to the Internet or to other dial-up services.

Overview of Dial-up Networking (DUN) Profile (Data Terminal Role)

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Overview of Dial-up Networking (DUN) Profile (Data Terminal Role)