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Hot to set RAS ring count for Standard Modem?

Posted on 1998-10-15
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Last Modified: 2013-12-14
My modem is "Standard Modem", and I want to setup RAS to answer after more than 1 ring.  

rasread.txt (in \winnt\system32\ras) suggests to change the "S0=.." expression in the COMMAND_LISTEN string in the modem.inf file (also in \winnt\system32\ras).

But modem.inf does not contain an entry for "Standard Modem".

So how can the ring count for "Standard Modem" be set?

Thanks,

Mark
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Question by:elfield
2 Comments
 
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Accepted Solution

by:
wayneb earned 50 total points
ID: 1771324
elfield, here is the info you are requesting

How to Set the Number of Rings for RAS Auto-Answer in NT 4.0
Last reviewed: July 24, 1997
Article ID: Q145879
 
The information in this article applies to:
Microsoft Windows NT Server version 4.0
Microsoft Windows NT Workstation version 4.0

SYMPTOMS
By default, the Remote Access Service (RAS) from Windows NT, answers incoming calls after the first ring. The documentation in the Remote Access Administrators Help file describes how you can modify the RAS Modem.inf file to change this behavior. However, this only works if RAS is not using any Telephony Application Programming Interface (TAPI)/Unimodem-based devices.

CAUSE
Beginning in Windows NT 4.0, RAS is capable of using TAPI. It also maintains backwards compatibility with Windows NT 3.51. However, RAS is not capable of using both TAPI and the Windows NT 3.51 Modem.inf information. If RAS is using TAPI, then modifying the Modem.inf file to change the number of rings to wait before answering has no effect.

RESOLUTION
In Windows NT 4.0, to set the number of ring messages from the modem after which RAS will answer the call, add the following key to the Registry:

   \HKEY_LOCAL_MACHINE\
      SYSTEM\
         CurrentControlSet\
            Services\
               RasMan\
                  Parameters

Then add the following REG_DWORD value to this key:

  NumberOfRings

This REG_DWORD registry value can be in the range of 1 to 20. If this value does not exist, or is outside of this range, the default value of one (1) is used. If RAS is not using TAPI, then this value is ignored and the documentation about modifying the Modem.inf file is correct.
WARNING: Using Registry Editor incorrectly can cause serious, system-wide problems that may require you to reinstall Windows NT to correct them. Microsoft cannot guarantee that any problems resulting from the use of Registry Editor can be solved. Use this tool at your own risk.
 
here is the Url to document above

http://support.microsoft.com/support/kb/articles/Q145/8/79.asp

you may have to fill out form to access this site.

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Author Comment

by:elfield
ID: 1771325
Thanks for the quick answer.
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