Microsoft KB Archive/225301

= Multilink PPP Not Enabled by Default with ISDN in the Internet Connection Wizard =

Article ID: 225301

Article Last Modified on 11/19/2003

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APPLIES TO


 * Microsoft BackOffice Small Business Server 4.0
 * Microsoft BackOffice Small Business Server 4.0a
 * Microsoft BackOffice Small Business Server 4.5

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This article was previously published under Q225301



SYMPTOMS
Multilink Point-to-Point protocol (PPP) is not enabled for ISDN adapters or connections using multiple devices when you run the Internet Connection Wizard (ICW).

Some ISDN adapters require multilink PPP to be enabled to bond all available channels to maximize throughput. Or, you may want to connect with multiple modems or devices to an Internet service provider (ISP).



CAUSE
When you run the ICW on Small Business Server (SBS) version 4.5, you are prompted to create a new phonebook entry if one does not already exist for the connection. This process does not allow for enabling multilink control. Because multilink control is required by some ISDN devices so that additional channels can be activated during a connection, you may not know that you are not connected at full speed.



RESOLUTION
Check with your ISDN device's documentation or manufacturer to determine if multilink control is required to activate additional channels on the device. If it is required, manually enable this functionality in the phonebook entry designated in the ICW.

You may also want to enable this functionality if you use more than one modem to make a connection to an ISP.



STATUS
This behavior is by design.



MORE INFORMATION
Not all ISDN devices require that multilink PPP be enabled for additional channels to be connected. Enabling this functionality by default may prevent some devices from establishing a connection at all. Please check with the device's documentation or manufacturer for information about configuring and using this functionality.

Additional query words: smallbiz

Keywords: kbhardware kbenv kbprb KB225301

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