When you are using a Motorola BitSURFR PRO or PRO EZ device, a RAS client may not be able to connect to the RAS server, and may display one of the following error messages:

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This behavior can occur if the RAS server is also using a Motorola BitSURFR PRO or PRO EZ device for dial-in connections. In this case, both ISDN devices are configured by default to use PPP as a client to an ISP connection. The BitSURFR PRO and PRO EZ models cannot answer "incoming" PPP calls. To accept incoming connections, the BitSURFR PRO and PRO EZ devices must be configured to use AIMux instead of PPP.

Because both the client device and server device must use the same "rate adaptation protocol" to connect successfully, both the client and server must be configured to use AIMux instead of PPP.

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To configure both the client and server for a successful connection, configure the Extra Settings box in the modem properties on both computers to use AIMux as the default rate adaptation protocol. You can configure the devices to use this protocol by placing initialization strings in the Extra Settings box.

Depending on which device is being used, the initialization strings that should be used may vary. The following initialization strings set each device to the factory defaults for the AIMux rate adaptation protocol.

On the ISDN Motorola BitSURFR PRO model, try: On the ISDN Motorola BitSURFR PRO EZ model, try:

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For further assistance with dial-up issues with these models, please refer to the installation notes included with your Motorola device, or contact Motorola Technical Support at: Microsoft provides third-party contact information to help you find technical support. This contact information may change without notice. Microsoft does not guarantee the accuracy of this third-party contact information.

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