Cannot Connect to RAS Server at 56 Kbps

ID: Q244390

The information in this article applies to:

Microsoft Windows NT Server version 4.0
Microsoft Windows NT Server, Enterprise Edition version 4.0
Microsoft Windows NT Server version 4.0, Terminal Server Edition
Microsoft Windows NT Workstation version 4.0
Microsoft Windows 2000 Server
Microsoft Windows 2000 Advanced Server
Microsoft Windows 2000 Professional
Microsoft Routing & Remote Access Service Update for Windows NT Server version 4.0
Microsoft Windows 95
Microsoft Windows 98

SUMMARY

A Remote Access Services (RAS) server may not answer at 56 Kbps. You may get a connection at 28.8 or 33.6 Kbps.

MORE INFORMATION

This behavior can occur because standard analog phone lines are not capable of supporting the 56 Kbps standards. A digital line and special hardware is required to achieve a 56 Kbps connection.

The following three criteria must be met before a 56 Kbps connection succeeds:

A digital circuit is required at one end and the modem must be digital.

V.90 support is required at both ends.

There can be no more than one analog to digital conversion in the path between the modems.

REFERENCES

For additional information, please see the white paper at the following 3Com Web site:

http://www.3com.com/technology/tech_net/white_papers/500659.html

The third-party contact information included in this article is provided to help you find the technical support you need. This contact information is subject to change without notice. Microsoft in no way guarantees the accuracy of this third-party contact information.

Additional query words: ntras 56k

Keywords : dun ntras win95 win98
Version : WINDOWS:2000,95; winnt:4.0
Platform : WINDOWS winnt
Issue type : kbinfo