Microsoft KB Archive/133704

= ISDN Bandwidth Capabilities of Windows NT =

Article ID: 133704

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows NT Workstation 3.5
 * Microsoft Windows NT Workstation 3.51
 * Microsoft Windows NT Workstation 4.0 Developer Edition
 * Microsoft Windows NT Server 3.5
 * Microsoft Windows NT Server 3.51
 * Microsoft Windows NT Server 4.0 Standard Edition

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This article was previously published under Q133704



SUMMARY
PPP Multilink Protocol (PPP MP) is a technology that provides up to 128 kilobytes per second (kb/s) wire speeds on a single ISDN line by combining two B-channel calls. Each B-channel provides a 64 kb/s link.

Microsoft supports Multilink Protocol starting with NT 4.0 and RAS.



MORE INFORMATION
Channel Aggregation is a proprietary method designed by Digi International (the makers of Digiboard) that allows speeds greater than 64 kb/s using 2 B- channels. To attempt to use speeds greater than 64kb/s, use one of the following methods:

Windows NT version 3.5x
Modify the phone book entry by editing the entry, clicking the ISDN button, and entering 2 in the Channels to Use category.

Windows NT version 4.0

 * 1) In Dial-Up Networking, click More, click Edit entry and modem properties.
 * 2) Select Multiple Lines in the Dial using drop down list.
 * 3) Click Configure and enter a phone number for each line which you are using.

For more technical information on the PPP Multilink Protocol, see RFC  This RFC can be found on the World Wide Web at:

http://www.cis.ohio-state.edu/htbin/rfc/rfc1717.html



For more general information regarding the PPP Multilink protocol or ISDN, connect to the following World Wide Web site:


 * http://alumni.caltech.edu/~dank/isdn/

Additional query words: prodnt

Keywords: KB133704

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