Appendix D: Optimizing Your Network Interface Card for High A/V Traffic

Microsoft Office Communications Server 2007 and Microsoft Office Communications Server 2007 R2 will reach end of support on January 9, 2018. To stay supported, you will need to upgrade. For more information, see Resources to help you upgrade your Office 2007 servers and clients.

For many deployments, you can use the default settings on your network interface. However, in the following situations, you should optimize for A/V traffic flow by increasing receive and transmit buffers settings to three times their default value on your network interface cards:

• You anticipate audio and video traffic on any particular A/V Conferencing Server or A/V Edge Server to exceed 200 to 250 Mbps.

• Your servers experience packet loss on the network.

  Note

  The following procedure provides steps to change these settings on a typical network interface card. The procedure will vary depending on your manufacturer.

To change your network interface card settings

1. Log on to the computer running A/V Conferencing Server or A/V Edge Server with local administrator permissions.

2. Right-click Computer Manager, and then click Manage.

3. In the console pane, click Device Manager.

4. In the details pane, expand Network adaptors.

5. Right-click your network adapter, and then click Properties.

6. Click the Advanced tab.

7. Under Settings, click Performance Options.

8. Under Settings, click Receive Descriptors.

   

9. In the Value box, change the value to three times the default value, and then click OK.

10. Under Settings, click Transmit Descriptors.