Selecting the most local source of an audio group

Last Updated : Jun 25, 2013 |

The algorithm skips the nonworking sources to find a working source in the group. The audio group algorithm selects one of the following sources:

  • A source that is local to the trunk or the user in the same media gateway or in the same group of TDM-connected or ATM-connected Port Network Gateway.

  • A source in a gateway in the same network region.

  • One of the following sources in a gateway in the interconnected network region:

    • Adjacent with the most available bandwidth and highest quality codec.

    • Non adjacent based on the shortest number of hops.

  • An Inter-Gateway Alternate Routing (IGAR)-connected source on a gateway interconnected through a PSTN trunk. This selection is based on IGAR percentage usage.

If you administer an announcement file extension for queuing and the source that is selected to play the file has no available playback ports, the request to play the announcement is held in a queue until a port on the source becomes available. With Call Vectoring, callers can listen to a previously-started feedback, such as ringback, until the system connects the call to an announcement. If you do not administer queuing for the announcement file extension, the system continues to search for a local source based on the listed criteria.