FIX: A direct cable connection between a Windows Embedded CE 6.0-based device and a PPP server may fail

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Article ID: 955238 - View products that this article applies to.
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SYMPTOMS

You establish a direct cable connection to a Point-to-Point Protocol (PPP) server from a Windows Embedded CE 6.0-based device. However, the connection may fail when one of the following conditions is true:
  • The server does not support the PPP handshake.
  • The server responds to the "CLIENT" connection request with a string other than the standard "CLIENTSERVER" response.

RESOLUTION

Software update information

A supported software update is now available from Microsoft as Windows CE 6.0 Platform Builder Monthly Update (October 2008). You can confirm this by scrolling to the "File information" section of this article. The package file name contains the product version, date, Knowledge Base article number, and processor type. The package file name format is:
Product version-yymmdd-kbnnnnnn-processor type
For example: Wincepb50-060503-kb917590-armv4i.msi is the ARMV4i Windows CE 5.0 Platform Builder fix that is documented in KB article 917590 and that is contained in the May 2006 monthly update. To resolve this problem immediately, click the following article number for information about obtaining Windows CE Platform Builder and core operating system software updates:
837392 How to locate core operating system fixes for Microsoft Windows CE Platform Builder products
This software update lets you modify the request string and the response string by setting the values of the DCCRequest registry entry and the DCCResponse registry entry under the
HKEY_LOCAL_MACHINE\Drivers\Unimodem\Settings
subkey. If the server does not exchange strings to establish the connection, you should set the registry entries to an empty string. Otherwise, you can set the string value to the string value that is actually used by the server. For example, if the server responds to the "CLIENT" connection request with "SERVER," you should set the DCCResponse registry entry to "SERVER."

Prerequisites

This software update is supported only if all previously issued updates for this product have also been installed.

Restart requirement

After you apply this software update, you must perform a clean build of the whole platform. To do this, use one of the following methods:
  • On the Build menu, click Clean, and then click Build Platform.
  • On the Build menu, click Rebuild Platform.
You do not have to restart the computer after you apply this software update.

Update replacement information

This software update does not replace a previously released updates.

File information

The English version of this software update package has the file attributes or the later file attributes that are listed in the following table.
Collapse this tableExpand this table
File nameFile sizeDateTime
Wincepb60-081020-kb955238-armv4i.msi817,15223-Oct-200823:05
Wincepb60-081020-kb955238-mipsii.msi803,84023-Oct-200823:05
Wincepb60-081020-kb955238-mipsii_fp.msi802,81623-Oct-200823:05
Wincepb60-081020-kb955238-mipsiv.msi805,88823-Oct-200823:05
Wincepb60-081020-kb955238-mipsiv_fp.msi808,44823-Oct-200823:05
Wincepb60-081020-kb955238-sh4.msi799,74423-Oct-200823:05
Wincepb60-081020-kb955238-x86.msi776,70423-Oct-200823:05
The English version of this software update package 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.
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File nameFile sizeDateTimePath
Windows embedded ce 6.0_update_kb955238.htm8,94222-Oct-200818:39081020_kb955238
Dial.c89,57709-Oct-200817:10Private\Winceos\Comm\Tapi\Unimodem
Modem.c50,98409-Oct-200817:10Private\Winceos\Comm\Tapi\Unimodem
Unimodem.lib816,96009-Oct-200817:09Public\Common\Oak\Lib\Armv4i\Debug
Unimodem.lib301,16809-Oct-200817:09Public\Common\Oak\Lib\Armv4i\Retail
Unimodem.lib775,32009-Oct-200817:09Public\Common\Oak\Lib\Mipsii\Debug
Unimodem.lib294,74209-Oct-200817:09Public\Common\Oak\Lib\Mipsii\Retail
Unimodem.lib775,37009-Oct-200817:09Public\Common\Oak\Lib\Mipsii_fp\Debug
Unimodem.lib294,80809-Oct-200817:09Public\Common\Oak\Lib\Mipsii_fp\Retail
Unimodem.lib782,58809-Oct-200817:09Public\Common\Oak\Lib\Mipsiv\Debug
Unimodem.lib300,58809-Oct-200817:09Public\Common\Oak\Lib\Mipsiv\Retail
Unimodem.lib782,63809-Oct-200817:09Public\Common\Oak\Lib\Mipsiv_fp\Debug
Unimodem.lib300,65409-Oct-200817:09Public\Common\Oak\Lib\Mipsiv_fp\Retail
Unimodem.lib703,69009-Oct-200817:09Public\Common\Oak\Lib\Sh4\Debug
Unimodem.lib270,70209-Oct-200817:09Public\Common\Oak\Lib\Sh4\Retail
Unimodem.lib708,41609-Oct-200817:08Public\Common\Oak\Lib\X86\Debug
Unimodem.lib267,53209-Oct-200817:08Public\Common\Oak\Lib\X86\Retail

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

MORE INFORMATION

Unimodem, the Windows CE Telephony API (TAPI) service provider, sends a "CLIENT" connection request to set up a direct serial connection, and a "CLIENTSERVER" response is expected.

For more information about software update terminology, 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

Properties

Article ID: 955238 - Last Review: November 26, 2008 - Revision: 1.0
APPLIES TO
  • Windows Embedded CE 6.0
Keywords: 
kbexpertiseadvanced kbfix kbsurveynew kbqfe KB955238

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