Phone devices with a specific Calling Search Space configured can call only numbers which are associated to a corresponding Route Partition.

Create Route Partition

Step 1 - Go to the Call Routing / Class of Control / Partition menu.

Step 2 - Click on the Add New button.

Step 3 - Provide a Name.

Step 4 - Click Save.

Create Calling Search Space

Step 1 - Go to the Call Routing / Class of Control / Calling Search Space menu.

Step 2 - Click on the Add New button.

Step 3 - Provide a Name.

Step 4 - Click Save.

Associate Route Partition(s) with Calling Search Space

Step 1 - Go to the Call Routing / Class of Control / Calling Search Space menu.

Step 2 - Select the Calling Search Space.

Step 3 - Under the Route Partitions for this Calling Search Space section select the Route Partition(s) from the Available Partitions box.

Step 4 - Add the selected Route Partition(s) with the down arrow.

Step 5 - Click Save.

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