Configuring the Listening Address for A/V Conferencing Servers

To configure the listening address for A/V Conferencing Servers, you specify the following:

The IP address for the listening address. The default is All, which we recommend if IP addresses in your environment are assigned dynamically or if your environment will use the FQDN to refer to the A/V Conferencing Server instead of an IP address. You can also select a specific IP address.
The port on which the A/V Conferencing Server receives SIP signaling messages.
The range of media ports, from low to high, that the A/V Conferencing Server uses for Real-Time Transport (RTP) media. The default range is from port 49152 through port 65535. The low port can be any number from 32768 to 65535. The high port can also be any number from 32768 through 65535, but it must be greater than the low port number by 127.

Open the Office Communications Server 2007 R2 snap-in.
In the console tree, expand the forest node, and then do one of the following:
- For an Enterprise pool, expand Enterprise pools, expand the pool, right-click the server, click Properties, and then click A/V Conferencing Properties.
- For a Standard Edition server, expand Standard Edition servers, expand the pool, right-click the server, click Properties, and then click A/V Conferencing Properties.
Click the Generaltab.
To select the address or addresses to which users connect for audio/video information and the A/V Conferencing Edge Server connects, under Settings, in the IP addressdrop-down list box, click the IP address you want to use. Changes to this setting do not take effect until you restart the Office Communications Server Audio/Video Conferencing service.
In SIP listening port, type the port number on which the A/V Conferencing Server listens for SIP traffic. Changes to this setting do not take effect until you restart the Office Communications Server Audio/Video Conferencing service.