Avaya Aura® Media Server (MS) is used by Communication Manager to provide the following IP audio capabilities similar to the legacy H.248 media gateways:

• Termination of RTP audio streams

• Conferencing of RTP audio streams

• Playing and recording announcements

• Playing audio stream as an announcement

• Generation of system tones

• Digit collection

The Avaya Aura® Media Server (MS) instances and Avaya Aura® Media Server (MS) channels are licensed features. Each Avaya Aura® Media Server (MS) must obtain an instance license from a WebLM server. Avaya Aura® Media Server (MS) channels are licensed through the Communication Manager feature license file, which specifies the number of Avaya Aura® Media Server (MS) channels that are allowed on a specific Communication Manager. Avaya Aura® Media Server (MS) channels can be established on any Avaya Aura® Media Server (MS) configured on Communication Manager.

Avaya Aura® Media Server (MS) can provide different tones for locations that are configured on Communication Manager. When you enable the Multinational Locations feature on the system-parameters customer-options form, the VoIP selection algorithm considers Avaya Aura® Media Server (MS) as a Location Parameter Index (LPI) matching VoIP resource. Although endpoints LPI is different than the native LPI of Avaya Aura® Media Server (MS).

Avaya Aura® Media Server (MS), as a VoIP resource, can provide tones per user location. However, if more than one user is involved in a call from different locations, the system uses the Avaya Aura® Media Server (MS) native location that is configured on the SIP signaling group page.

For more information, see Implementing and Administering Avaya Aura® Media Server guide.