# Add a Line Group

Note: For MiCollab deployments of NuPoint UM, you must use the MiCollab Users and Services Provisioning application to set up one or more Network Elements before configuring Line Groups.

To add a line group to your system configuration:

1. From the navigation tree, click Offline Configuration > Edit Offline Configuration. The Offline Configuration navigation tree opens.

2. When prompted to Duplicate Active Configuration, click Yes.

3. In the navigation tree, click Line Groups and then click Add.

4. Configure the following parameters:

   Parameter | Description | Value
   --- | --- | ---
   Line Group Number | Assign a number to this line group or click Next Available to add an unused list number. | 1 - 24
   Name | Enter a name for this line group. | Maximum 25 characters.
   Pilot Number | For SIP GATEWAY nodes only. See step 7 for information. |
   Application | Select the application to associate with this line group. A set of custom tabs appears for each application. Choices are: NuPoint Voice NP Receptionist Outbound (Pager) Dialer Centrex Unified Integration Enhanced InBand DTMF to PBX Dialer Speech Recognition Direct Drop Disabled Click the links in step 5 for a description of configuration parameters for each application. | Default: NuPoint Voice
   User Interface | Select the user interface that corresponds to this line group. Choices are: None NuPoint Voice Call Director | Default: None
   Fax Group Connection | Select a fax group from your configured fax groups to associate with this line group. Note: If you select a fax group, you cannot enable G.729 audio compression. | Default: None
   Enable G.729 | Select the check box to enable G.729 audio compression for this line group. Clear the check box to restrict the line group to G.711. Note: If you enable G.729, you cannot select a Fax Group Connection for the line group. This field is available only if a G.729 license has been purchased for the system. Before implementing G.729, check the NuPoint UM Engineering Guidelines to ensure that you do not exceed the recommended port usage limits. This is necessary because G.729 uses more system resources than G.711. For a Mitel 5000 CP integration, access the Speech Encoding Setting field on the 5000 CP (located in System\Devices and Feature Codes\Node IP Connection Groups\<Pxxxx>IP Call Configuration or System\IP-Related Information\Call Configurations) and select G.729. For a MiVoice Business ICP integration, create a network zone on the MiVoice Business ICP, enable Intra-zone Compression, and then assign all endpoints, including sets and IP extensions mapped to NuPoint ports, to the zone. In addition, make sure to equip the MiVoice Business ICP with Digital Signal Processors (DSPs) that support G.729. For a Dialogic Media Gateway integration, access the DMG Web Interface, select the network group for this implementation (located under Configuration > VoIP > Network Groups), and then select Low Bit Rate Codec as Audio Codec #1. When deciding which codec to use, be aware that G.711 provides high quality voice but uses more bandwidth. G.729 uses less bandwidth at the cost of some sound quality, although it is still good enough for most calls. | Default: Cleared

5. Using the interface tabs, configure the parameters required for your application:

   - The Lines tab is common to all applications.

   - NuPoint Voice/Direct Drop parameters

   - NP Receptionist parameters

   - DTMF to PBX Dialer parameters

   - Outbound Pager/Dialer parameters

   - Centrex

   - Unified Integration parameters

   - Enhanced InBand parameters

   - Speech Recognition parameters

6. Click Add to save the configuration data.

7. For SIP GATEWAY nodes only: A "Pilot Number" field appears after a Line Triplet if the line group is mapped to the network element of type SIP GATEWAY. Enter a value for the Pilot Number in this field. A pilot number is made up of 1 to 6 digits.

   Note:

   - For a Mitel 5000 CP integration, enter a pilot number in the field that matches the Pilot Number defined on the SIP Gateway for NuPoint Unified Messaging.

   - All lines in a line group must be mapped to one Network Element item of type SIP GATEWAY. This means that if the first line in a line group is mapped to a SIP GATEWAY port, then other added lines must also be mapped to the same SIP GATEWAY.

   - When you map a line-triplet (e.g. 1:0:0) to a port number (e.g. 3), the port number must start from 1 and not zero. The port numbers that can be used in the mapping depend on the number of ports programmed on the menu for Network Element of type SIP GATEWAY (see Number of Ports in Add a Network Element). For example, if the Number of Ports in the Network Element is 16, then the valid port numbers are: 1, 2, 3, etc. up to 16. You cannot not map a line triplet to port 17 or 0, or to any other port that is larger that 16. Also, you cannot map two line triplets to the same port number. For example, you cannot map both of the line triplets 1:0:0 and 1:0:2 to port number 2.

8. Click Add again to add the new line group to the list of existing line groups.

9. A confirmation message regarding the configuration changes appears. Click OK.

10. In the navigation tree, select Commit Changes and Exit. Confirm the Commit. Your changes are now saved to the inactive (duplicate) configuration.

Note: Configuration changes will not take effect until you have activated the inactive configuration.