Microsoft KB Archive/936713

= Private Branch Exchange (PBX) software obtains only half of the telephone number of a call in Windows Vista =

Article ID: 936713

Article Last Modified on 9/8/2007

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APPLIES TO


 * Windows Vista Enterprise 64-bit Edition
 * Windows Vista Home Premium 64-bit Edition
 * Windows Vista Ultimate 64-bit Edition
 * Windows Vista Business
 * Windows Vista Business 64-bit Edition
 * Windows Vista Enterprise
 * Windows Vista Home Premium
 * Windows Vista Ultimate

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SYMPTOMS
On a Windows Vista-based computer, you use Private Branch Exchange (PBX) software that uses Telephony API (TAPI) to manage telephone calls from clients. However, telephone numbers from the clients are truncated. Therefore, PBX software obtains only half of the telephone number of a call. This problem may affect some features of the PBX software.



CAUSE
This problem occurs because of an error in the TAPI server.

After the client application uses the lineGatherDigits TAPI function to collect digits on a specified call, the Telephony Service Provider (TSP) receives the collected digits. Then, TSP correctly sends the digits to the TAPI server. However, the TAPI server sends only the first half of the digits to the corresponding target application by using the LINE_GATHERDIGITS message. Therefore, this problem occurs.



Hotfix information
A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites
No prerequisites are required.

Restart requirement
You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information
This hotfix does not replace any other previously released hotfixes.

Registry information
To use this hotfix, you do not have to make any changes to the registry.

File information
The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Windows Vista, 64-bit version


STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
For more information about TAPI applications, visit the following Microsoft Web site:

http://msdn2.microsoft.com/en-us/library/ms734223.aspx

For more information about the lineGatherDigits TAPI function, visit the following Microsoft Web site:

http://msdn2.microsoft.com/en-us/library/ms735655.aspx

For more information about the LINE_GATHERDIGITS message, visit the following Microsoft Web site:

http://msdn2.microsoft.com/en-us/library/ms736547.aspx

For more information, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Keywords: kbfix kbqfe kbpubtypekc kbexpertiseadvanced kbexpertisebeginner kbhotfixserver KB936713

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