Configuring A/V Conferencing Media Encryption

Topic Last Modified: 2009-03-04

To provide security, media streams used in conferencing can be encrypted.

When you configure for encryption, you can specify that the inbound and outbound audio and video connections to the A/V Conferencing services in the pool require encryption, support encryption, or do not support encryption, as follows:

  • The Require encryption option means that inbound and outbound audio and video connections to the A/V Conferencing services in the pool must be encrypted using Secure Real-Time Transport Protocol (SRTP). If you require encryption, a participant whose computer is not capable of SRTP encryption cannot join any audio/video conferences that are hosted by the A/V Conferencing services in this pool. (Office Communicator 2007 R2 clients support SRTP encryption. Legacy clients, such as Office Communicator 2005, support Triple Data Encryption Standard (3DES) encryption.)
  • TheSupport encryption option means that inbound and outbound audio and video connections to the A/V Conferencing services in the pool can be encrypted using SRTP for clients that support it.
  • The Do not support encryption option means that inbound and outbound audio and video connections to the A/V Conferencing services in the pool are not encrypted.

To configure A/V Conferencing media encryption

  1. Open the Office Communications Server 2007 R2 snap-in.

  2. In the console tree, do one of the following:

    • For an Enterprise pool, expand Enterprise pools, right-click the pool, click Properties, and then click Pool Properties.
    • For a Standard Edition server, expand Standard Edition servers, right-click the pool, click Properties, and then click Pool Properties.
  3. Click the Media tab.

  4. On the Media tab, in the Encryption level drop-down list box, click one of the following:

    • Require encryption, to require SRTP encryption.
    • Support encryption, to support, but not require, SRTP encryption.
    • Do not support encryption, to not provide for SRTP encryption.