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RAS Server Does Not Prompt Client for a Callback Number
The information in this article applies to:
Microsoft Windows NT Workstation versions 3.5, 3.51
Microsoft Windows NT Server versions 3.5, 3.51
SUMMARY
A Windows NT RAS client dials into a Windows NT RAS server
using a user name and password that are set up for server callback
with the phone number "set by caller." The server never prompts
the user for a phone number to call the client back, it just
authenticates and lets the user connect.
Similarly, if a Windows NT RAS client dials in to a Windows NT
RAS server using a user name and password that are setup for
server callback with the phone number "Preset" by the
administrator, the RAS client receives the following error
message:
error 734: The PPP link control protocol terminated
The RAS client receives the error message after the server
hangs up to call back, and the client never receives a callback
from the server.
MORE INFORMATION
There is an option in the RAS client phone book, network
settings, called "Request LCP Extensions" that MUST be checked in
order for callback to work properly. This box is checked by
default.
The following information on LCP Extensions is from the RAS
Help file:
The Request LCP extensions (RFC 1570) check box enables newer PPP features.
These extensions may cause problems when calling servers with older PPP
software. Clear the Request LCP extensions (RFC 1570) check box only if
consistent problems occur.
Clearing the checkbox prevents LCP from sending Time-Remaining and
Identification packets and requesting callback during the LCP negotiation of
PPP.
page LAST UPDATED:
Thursday, 08. November 2007 18:24:13 -0600
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