IBM MWave 28800 Modem Does Not Function Properly with RAS
Article ID: 163086
Article Last Modified on 11/1/2006
APPLIES TO
- Microsoft Windows NT Workstation 3.5
- Microsoft Windows NT Workstation 3.51
- Microsoft Windows NT Server 3.5
- Microsoft Windows NT Server 3.51
This article was previously published under Q163086
SYMPTOMS
Some models of the IBM MWave 28800 modems do not work with Remote Access
Service (RAS) and other communications software. However, the same modems
sometimes appear to function properly with Windows Terminal or other
communications software.
CAUSE
The IBM MWave 28800 modems are not on the Windows NT 3.51 Hardware
Compatibility List (HCL). Windows NT detects these modems as generic 28800
modems, and may drop connections intermittently.
RESOLUTION
To resolve this problem, update the existing Modem.inf file in the
%Systemroot%\System32\Ras directory by appending the following information:
;----------------------------------------
[Mwave 28800]
<speaker_on>=M1
<speaker_off>=M0
<autodial_on>=ATDT
<autodial_off>=ATX3D
<speaker_on>=M1
<speaker_off>=M0
<hwflowcontrol_on>=&K3
<hwflowcontrol_off>=&K0
<compression_on>=%C1"H3
<compression_off>=%C0"H0
<protocol_on>=\\N7
<protocol_off>=\\N0
CALLBACKTIME=10
DEFAULTOFF=compression
MAXCARRIERBPS=28800
MAXCONNECTBPS=57600
DETECT_STRING=ATI3<cr>
DETECT_RESPONSE=IBM Mwave Modem v3.0
COMMAND_INIT=AT&F&C1&D2 V1 S0=0 S2=128 S7=55<cr>
COMMAND_INIT=AT<hwflowcontrol><protocol><compression><speaker><cr>
COMMAND_DIAL=<autodial><phonenumber><cr>
COMMAND_LISTEN=ATS0=1<cr>
IBM also suggests that you set the PORT flow control to hardware and click
to select FIFO under advanced settings.
STATUS
This problem occurs when you use Windows NT 3.5 or 3.51 and IBM MWave
modems.
Additional query words: prodnt
Keywords: kb3rdparty kbhardware kbprb KB163086