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Voici le blog sur les communications unifiées et la collaboration Microsoft par un MVP nominé depuis 11 ans

Les informations de présence de Microsoft Office Communications Server 2007 peuvent ne pas appara^tre dans outlook 2003 (SP2) ou 2007. Cela arrive souvent quand l'URI SIP de l'utilsateur est différente de l'adresse email primaire de l'utilisateur ou quand l'utilisateur a de nombreuses adresses e-mail.

La Résolution :

Step 1: Add a SIP proxy address in Exchange Server for the user account that specifies the user's SIP URI

Microsoft Exchange Server 2003
  1. Open Active Directory User's and Computers.
  2. Double-click the user.
  3. Click the E-mail Addresses Tab.
  4. Click New.
  5. Click Custom Address. Type the SIP URI in the E-mail address field, and then type SIP in the E-mail type field.
  6. Click OK two times.
  7. Wait for the Active Directory directory service and Exchange to synchronize.
Exchange Server 2007

By default, Exchange 2007 can obtain a Communications Server 2007 user's SIP URI from Active Directory and populate the SIP proxy address automatically.

Step 2: Add two registry entries (Outlook 2003 SP2 only)

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
322756  (http://kbalertz.com/Feedback.aspx?kbNumber=322756/ ) How to back up and restore the registry in Windows
Note This step is not required for Outlook 2007.

Outlook 2003 SP2 does not search for the user's SIP address to get the presence information. If a user's SIP proxy address and the user's default e-mail address are different, Outlook 2003 SP2 cannot show presence information. By adding the following registry keys for Outlook 2003 SP2, you can help prevent a problem if these addresses are different.
  1. Click Start, click Run, type regedit, and then press ENTER.
  2. Locate the following registry subkey:
  3. Click Edit, point to New, and then click DWORD value.
  4. Type QueryServiceForStatus, and then click OK.
  5. Double-click QueryServiceForStatus, type 2, and then click OK.
  6. Click Edit, point to New, and then click DWORD value.
  7. Type EnableDynamicPresence, and then click OK.
  8. Double-click EnableDynamicPresence, type 1, and then click OK.
  9. Exit Registry Editor.
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