Configure CUCM Groups#

Overview#

A Cisco Unified Communications Manager (CUCM) group contains a list of up to three Cisco Unified Communications Manager (CUCM) servers (subscribers). These servers are prioritized. The server marked with the lowest number (zero) serves as the primary CUCM subscriber for that group, and the other members of the group serve as secondary and tertiary (backup) CUCMs.

Each device pool has one CUCM group that is assigned to it. When a device registers, it attempts to connect to the primary CUCM subscriber in the group assigned to its device pool. If the primary CUCM is unavailable, the device tries to connect to the next CUCM listed in the group, and so on.

A single CUCM subscriber is usually assigned as primary for one CUCM group, and as secondary / tertiary (if applicable) on other CUCM groups.

The table describes the value of CUCM groups for your system:

Benefit

Description

Redundancy

This feature enables you to designate a primary and backup CUCM subscriber servers for each group.

Call processing load balancing

This feature enables you to distribute the control of devices across multiple CUCM subscribers.

For systems with a CUCM that includes multiple servers (subscribers), you are likely to achieve better load distribution and redundancy.

Add, Edit, or Delete CUCM Groups#

This procedure adds a new CUCM group, and edits and deletes an existing CUCM group.

Prerequisites:

  • Before configuring a CUCM group, you must configure in the system all the CUCM servers (subscribers) that you want to assign as members of that group.

Note

After configuring the CUCM group, you can use it to configure device pools. Devices obtain their CUCM group list setting from the device pool to which they are assigned.

Perform these steps:

  1. Log in to the Admin Portal as a Provider, Reseller, or Customer administrator.

    Note

    For Shared Architecture deployment, you must sign in only as a Provider or Reseller admin as only Provider or Reseller admins can add CUCMs.

  2. If you are adding a new instance, ensure the hierarchy path is set to the target node for the new instance.

  3. Choose an option, depending on your admin role:

    • If you signed in as the Provider or Reseller administrator, go to (default menus) Device Management > CUCM > Unified CM Groups.

    • If you signed in as the Customer administrator, go to (default menus) Device Management > Advanced > Unified CM Groups.

  4. Choose an option:

    • To add a new CUCM group, click Add, then go to step 5.

    • To edit an existing CUCM group, click on the relevant CUCM group in the list; then, go to step 5.

  5. Modify the following fields, as required:

    Field

    Description

    Name (Mandatory)

    Enter the name of the new group.

    Auto-registration Cisco Unified Communications Manager Group

    Check the Auto-registration Cisco Unified Communications Manager Group check box if you want this Cisco Unified Communications Manager group to be the default Cisco Unified Communications Manager group when auto-registration is enabled.

    Leave this check box unchecked if you do not want devices to auto-register with this Cisco Unified Communications Manager group.

    Tip

    Each Cisco Unified Communications Manager cluster can have only one default auto-registration group. If you choose a different Cisco Unified Communications Manager group as the default auto-registration group, that is, you check the Auto-registration Cisco Unified Unified Communications Manager Group check box for a different Cisco Unified Communications Manager group, the previously chosen auto-registration group no longer serves as the default for the cluster; the Auto-registration Cisco Unified Communications Manager check box displays for the previously chosen group (the original default), and the check box gets disabled for the group that now serves as the default.

    Unified CM Group Items (Mandatory)

    Click Add (+) to select a Cisco Unified Communications Manager to add to the group. Repeat as necessary to add multiple Cisco Unified Communications Managers to the group.

    Click the Remove (-) button to remove a Cisco Unified Communications Manager from the group.

    Click the up and down arrow buttons to change the order of the Cisco Unified Communications Managers in the group.

    Priority (Mandatory)

    Enter the priority number for this Cisco Unified Communications Manager in the group. The smaller the integer, the higher the priority.

    Selected Cisco Unified Communications Managers

    This field displays the Cisco Unified Communications Managers that are in the Cisco Unified Communications Manager group.

  6. Click Save.

    If you added a new CUCM group, it now appears in the list of CUCM groups. Click on a CUCM group in the list to view or modify its properties.

    To delete a CUCM group, select the checkbox adjacent to the its name in the list, and click Delete.

    Note

    To verify that the CUCM is deployed in Shared Mode:

    • Go to (default menus) Device Management > CUCM > Servers.

    • On the Publisher tab, verify that the Multi-Tenant field is set to Shared.

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