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Dial-up OS Design Development (Windows Embedded CE 6.0)

1/6/2010

The Dial-up Networking functionality is implemented using Remote Access Service (RAS) and the Point-to-Point Protocol (PPP). Dial-up Networking allows a device to access network resources from a remote location. First, a connection is established with the remote computer, and then the device, or client, can upload and download files.

RAS connects a client to a host computer, known as a remote access server. A device running RAS connects to a remote access server using PPP. PPP is a set of industry standard framing and authentication protocols that enable remote access. A device can connect to a remote access server using a direct serial, infrared, or a dial-up connection.

Applications using RAS can link to Coredll.lib to resolve RAS application programming interface (API) entry points, to determine the proper method for a device build, or to link to the Windows XP RAS API set (Rasapi32.lib).

RAS custom scripting allows you to customize the process of establishing a connection. AutoDial enables a device to automatically attempt a new dial-up connection when the current connection fails.

OS Design Information

The following table shows operating system design information for Dial-up Networking.

Concept Description

Dependencies

TCP/IP

Message Queue

Hardware considerations

Modem

Modules and Components

The following table shows the components and modules that implement Dial-up Networking.

Item Module Component

Dial-up Networking

Ppp

None

AutoDial

Autoras

None

Standard Modem for Dial-up Networking

asyncmac, unimodem

None

Dial-up Networking Implementation Considerations

The following table shows the Sysgen variables for Dial-up Networking.

Sysgen variable Description

SYSGEN_PPP

When this variable is set, the Dial-up Networking (RAS/PPP) Catalog item is included in the OS design.

SYSGEN_AUTORAS

When this variable is set, the AutoDial Catalog item is included in the OS design.

SYSGEN_MODEM

When this variable is set, the Standard Modem Support for Dial-up Networking Catalog item is included in the OS design.

Operating System Development Topics

Unimodem OS Design Development

Application Development Topics

Overview of RAS

Sample Application

Phone-Book Operation

RAS Custom Scripting

RAS AutoDial

Point-to-Point Protocol

Dial-up Security

Dial-up Registry Settings

See Also

Other Resources

Dial-up Networking