Unassigned Numbers

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One feature that many organizations are interested in, but that Office Communications Server is unable to provide natively, is the ability to direct calls to unassigned numbers to an attendant or operator. If numbers are not assigned, those calls simply fail. In Lync Server 2010, administrators can define ranges of unassigned numbers and an action that occurs when someone dials one of those numbers.

Note

The ranges defined for unassigned numbers can actually contain numbers that are assigned to users. This does not interfere with call routing and can actually be helpful for when users leave or extensions are removed. This way, callers can still be routed appropriately if the extension no longer exists.

Calls that match an unassigned number range can be routed in only two different ways: Either an announcement can be played to the caller or the caller can be transferred to an Exchange Unified Messaging Auto Attendant extension.

To create a new unassigned number range, use the following steps:

1. Open the Lync Server 2010 Control Panel.

2. Click Voice Features.

3. Click Unassigned Number.

4. Click New.

5. Enter a Name identifying this range of numbers.

6. In the first Number range field, enter the first number in the range.

7. In the second Number range field, enter the last number in the range.

8. In the Announcement service field, select either Announcement or Exchange UM.

If configuring an announcement, follow these steps:

1. Click Announcement service.

2. Click Select.

3. Choose an application server in the organization with an audio announcement configured and then click OK.

4. Select an Announcement to be played and then click OK.

5. Click OK again to save the range definition.

If configuring an Exchange Unified Messaging transfer, follow these steps:

1. Click Auto Attendant phone number.

2. Click Select.

3. Choose a phone number to transfer callers to and then click OK.

4. Click OK again to save the range definition.

Tip

On the Unassigned number page, be sure to order the unassigned number ranges in the desired order. The ranges are matched starting from top to bottom, so if a range overlaps with another, the first range in the list is used.

Announcement Files

Before you can use a prerecorded audio file as an announcement, it must be imported using the Lync Server Management Shell. To import a file, first store the content in a temporary variable:

$MyAudioFile = Get-Content <File path and name> -ReadCount 0 –Encoding Byte

Then import the announcement file to the file share using the variable:

Import-CsAnnouncementFile –Parent service:ApplicationServer:<Front-End FQDN>
-Content $MyAudioFile

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