Use the Bridged Line Appearance (BLA) feature to give single-line and multi-appearance telephones an appearance of another telephone number. With BLA, you can make, answer, and bridge onto calls to or from the telephone number of another user.

For the BLA feature to be available, your administrator must provision the BLA feature for your extension.

The terms primary number, primary telephone, and primary station all mean the same thing.

The primary number is the extension that you want other extensions to bridge onto. For example, you want extension A as the primary number to also have call appearances on extensions B, C, and D.

In this case, your administrator must access extensions B, C, and D to configure Bridge Appearance of extension A onto these extensions.

A typical use case for the BLA feature is a boss and secretary scenario. In this scenario, the primary number is of the boss and call appearances of the primary number are configured on the extension of the secretary. When someone calls the boss, either the boss or secretary can answer the call. If the call is answered first by the secretary, the boss can bridge onto the call.

If a call is made to the extension of the secretary, the boss cannot see this call or bridge onto it.

To make a call using the BLA extension, you must first select the primary extension appearance and then dial on behalf of the primary extension.

When you receive a call on the primary extension, the call rings on the primary extension and the secondary extension. In this case, the secondary extension displays that the call is for the primary extension. The user of the secondary extension can select and answer this call. After the call is answered, the secondary extension displays that the active answered call is for the primary extension. On the primary extension, Avaya Workplace Client displays a bridge appearance to bridge onto the call answered on the secondary extension.