Table Of Contents

Cisco CallManager Group Configuration

Adding a Cisco CallManager Group

Updating a Cisco CallManager Group

Copying a Cisco CallManager Group

Deleting a Cisco CallManager Group

Cisco CallManager Group Configuration Settings

Cisco CallManager Group Configuration

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A Cisco CallManager group specifies a prioritized list of up to three Cisco CallManagers. The first Cisco CallManager in the list serves as the primary Cisco CallManager for that group, and the other members of the group serve as secondary (backup) Cisco CallManagers.

Each device pool has one Cisco CallManager group assigned. When a device registers, it attempts to connect to the primary (first) Cisco CallManager in the group assigned to its device pool. If the primary Cisco CallManager is not available, the device tries to connect to the next Cisco CallManager listed in the group, and so on.

Cisco CallManager groups provide important features for your system:

•Redundancy—This feature enables you to designate a primary and backup Cisco CallManagers for each group.

•Call processing load balancing—This feature enables you to distribute the control of devices across multiple Cisco CallManagers.

For most systems, you need to assign a single Cisco CallManager to multiple groups to achieve better load distribution and redundancy.

Use the following topics to add, update, or delete a Cisco CallManager group:

•Adding a Cisco CallManager Group

•Updating a Cisco CallManager Group

•Copying a Cisco CallManager Group

•Deleting a Cisco CallManager Group

•Cisco CallManager Group Configuration Settings

Adding a Cisco CallManager Group

This section describes how to configure a new Cisco CallManager group. You can also create a new Cisco CallManager group by copying an existing one. See the "Copying a Cisco CallManager Group" section for more information.

Before You Begin

Before configuring a Cisco CallManager group, you must configure the Cisco CallManagers that you want to assign as members of that group. See the "Adding a Cisco CallManager" section for more information.

Procedure

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Step 1 Choose System > Cisco CallManager Group.

Step 2 Enter the appropriate settings as described in Table 4-1.

Step 3 Click Insert to save the Cisco CallManager group in the database.

Once you have configured the Cisco CallManager group, you can use it to configure device pools. Devices obtain their Cisco CallManager group list setting from the device pool to which they are assigned.

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Related Topics

•Updating a Cisco CallManager Group

•Copying a Cisco CallManager Group

•Deleting a Cisco CallManager Group

•Cisco CallManager Group Configuration Settings

Updating a Cisco CallManager Group

This section describes how to update an existing Cisco CallManager group.

Procedure

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Step 1 Choose System > Cisco CallManager Group.

Step 2 From the Cisco CallManager Group list, choose the group you want to update.

Step 3 Update the appropriate settings as described in Table 4-1. Before saving the changes, you can click Cancel Changes to reset all fields to their original value.

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Note To designate a group as the default Auto-registration Cisco CallManager Group, check the Auto-registration Cisco CallManager Group check box.

If the currently selected group is the default group for auto-registration, you cannot change it by unchecking the Auto-registration Cisco CallManager Group check box. You must choose a different default auto-registration group. When you do so, the Cisco CallManager automatically changes the currently selected default auto-registration group.

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Step 4 Click Update to save the changes in the database.

You must reset the devices that use the updated Cisco CallManager group to apply the changes. To reset all the devices that use this Cisco CallManager group, click Reset Devices.

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Tips For your convenience in resetting devices, the Reset Devices button resets all devices in the device pool that uses this Cisco CallManager group.

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Caution Resetting devices can cause them to drop calls.

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Related Topics

•Adding a Cisco CallManager Group

•Copying a Cisco CallManager Group

•Deleting a Cisco CallManager Group

•Cisco CallManager Group Configuration Settings

Copying a Cisco CallManager Group

Use the following procedure to add a new Cisco CallManager group by copying settings from an existing group.

Procedure

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Step 1 Choose System > Cisco CallManager Group.

Step 2 From the Cisco CallManager Group list, choose the name of the group you want to copy.

Step 3 Click Copy.

Step 4 In the Cisco CallManager Group field, enter the name of the new group. You must change the name of the group.

Step 5 Edit the fields you want to change as described in Table 4-1.

Step 6 Click Insert to apply the changes and add the new Cisco CallManager group to the database.

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Related Topics

•Adding a Cisco CallManager Group

•Updating a Cisco CallManager Group

•Deleting a Cisco CallManager Group

•Cisco CallManager Group Configuration Settings

Deleting a Cisco CallManager Group

This section describes how to delete a Cisco CallManager group from the database.

Before You Begin

You cannot delete a Cisco CallManager group if it is assigned to any device pools or MGCP gateways or if it is the current Auto-registration Cisco CallManager Group for the cluster. If you try to delete a Cisco CallManager group that is in use, an error message displays. Before deleting a Cisco CallManager group that is currently in use, you must perform some or all of the following tasks:

•Assign a different Cisco CallManager group to the device pools that are currently using this Cisco  CallManager group. See the "Updating a Device Pool" section on page 8-4.

•Create or choose a different Cisco CallManager group to be the Auto-registration Cisco CallManager Group.

Procedure

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Step 1 Choose System > Cisco CallManager Group.

Step 2 From the Cisco CallManager Group list, choose the group you want to delete.

Step 3 Click Delete.

Step 4 When asked to confirm the delete operation, click either OK to delete or Cancel to cancel the delete operation.

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Related Topics

•Adding a Cisco CallManager Group

•Updating a Cisco CallManager Group

•Copying a Cisco CallManager Group

•Cisco CallManager Group Configuration Settings

Cisco CallManager Group Configuration Settings

Table 4-1 describes the configuration settings for Cisco CallManager groups.

Table 4-1 Cisco CallManager Group Configuration Settings 

Field	Description
Cisco CallManager Group	Enter the name of the new group.
Auto-registration Cisco CallManager Group	Check the Auto-registration Cisco CallManager Group check box if you want this Cisco CallManager group to be the default Cisco CallManager group when auto-registration is enabled. Leave this check box unchecked if you do not want devices to auto-register with this Cisco CallManager group. Note Each Cisco CallManager cluster can have only one default auto-registration group. If you select a different Cisco CallManager group as the default auto-registration group, the previously chosen auto-registration group no longer serves as the default for the cluster.
Available Cisco CallManagers	This field displays the list of available Cisco CallManager that are not a part of the Cisco CallManager group. Choose the Cisco CallManager names, and use the left and right arrows to move Cisco CallManagers between the Selected list and the Available list.
Selected Cisco CallManagers	This field displays the Cisco CallManagers that are in the Cisco CallManager group. The Selected list can contain up to three Cisco CallManagers. Cisco CallManagers in the Selected list become members of the group when you click Insert. Choose the Cisco CallManager names, and use the left and right arrows to move Cisco CallManagers between the Selected list and the Available list. Use the up and down arrows to arrange the groups in the Selected list in the order that you want.

Related Topics

•Adding a Cisco CallManager Group

•Updating a Cisco CallManager Group

•Copying a Cisco CallManager Group

•Deleting a Cisco CallManager Group