Installation de certificat sur OCS 2007 Server
1) On the server click Start, then Programs, then Administrative Tools, and then click Office Communications Server 2007.
2) Expand the snap-in until you find the Enterprise Edition Server.
3) Right click on the Office Communications Server where the CSR was generated previously, and click Certificates.
4) Click "Next", then chose to "Process the pending request and install the certificate".
5) Browse for the CertificateBundle.p7b file that you saved to the server. Make sure to have the search display all files as you search (it only displays .cer files by default). Once you have selected the CertificateBundle.p7b file, click Next. This will install the certificate. You can view the certificate and close the certificate wizard.
Your certificate is now installed and ready to use.
For more information, see Microsoft's official Office Communications Server documentation, located at http://r.office.microsoft.com/r/rlidOCS?clid=1033&p1=library