Cisco Unified CallManager Features and Services Guide, Release 5.1(3)
Call Park
Downloads: This chapterpdf (PDF - 276.0KB) The complete bookPDF (PDF - 5.02MB) | Feedback

Call Park

Table Of Contents

Call Park

Introducing Call Park

System Requirements for Call Park

Interactions and Restrictions

Interactions

CTI Applications

Music On Hold

Route Plan Report

Calling Search Space and Partitions

Immediate Divert

Barge

Q.SIG Intercluster Trunks

Restrictions

Installing and Activating Call Park

Configuring Call Park

Call Park Configuration Checklist

Setting the Service Parameters for Call Park

Finding a Call Park Number

Configuring a Call Park Number

Call Park Configuration Settings

Deleting a Call Park Number

Troubleshooting Call Park

Related Topics


Call Park


The Call Park feature allows you to place a call on hold, so it can be retrieved from another phone in the Cisco Unified CallManager system (for example, a phone in another office or in a conference room). If you are on an active call at your phone, you can park the call to a call park extension by pressing the Park softkey or the Call Park button. Someone on another phone in your system can then dial the call park extension to retrieve the call.

You can define either a single directory number or a range of directory numbers for use as call park extension numbers. You can park only one call at each call park extension number.

This chapter provides the following information about call park:

Introducing Call Park

System Requirements for Call Park

Interactions and Restrictions

Installing and Activating Call Park

Configuring Call Park

Setting the Service Parameters for Call Park

Finding a Call Park Number

Configuring a Call Park Number

Deleting a Call Park Number

Related Topics

Introducing Call Park

The Call Park feature works within a Cisco Unified CallManager cluster, and each Cisco Unified CallManager in a cluster must have call park extension numbers defined. (For information about using call park across clusters, see the "Using Call Park Across Clusters" section.) You can define either a single directory number or a range of directory numbers for use as call park extension numbers. Ensure that the directory number or range of numbers is unique.

Valid call park extension numbers comprise integers and the wildcard character, X. You can configure a maximum of XX in a call park extension number (for example, 80XX), which provides up to 100 call park extension numbers. When a call gets parked, Cisco Unified CallManager chooses the next call park extension number that is available and displays that number on the phone.

Cisco Unified CallManager can park only one call at each call park extension number.


Note If users will use call park across servers in a cluster, ensure each Cisco Unified CallManager server in a cluster has call park extension numbers that are configured. See the "Configuring a Call Park Number" section for configuration details.


Using the Call Park Feature

Figure 10-1 illustrates the call park process.

1. User on phone A calls phone B.

2. User on phone A wants to take the call in a conference room for privacy. Phone A user presses the Park softkey.

3. The Cisco Unified CallManager server to which phone A is registered sends the first available call park directory, 1234, which displays on phone A. The user on phone A watches the display for the call park directory number (so he can dial that directory number on phone C).

4. The user on phone A leaves the office and walks to an available conference room where the phone is designated as phone C. The user goes off-hook on phone C and dials 1234 to retrieve the parked call.

5. The system establishes call between phones C and B.

Figure 10-1 Call Park Process

Using Call Park Across Clusters

Users can dial the assigned route pattern (for example, a route pattern for an intercluster trunk could be 80XX) and the call park number (for example 8022) to retrieve parked calls from another Cisco Unified CallManager cluster. Additionally, you must ensure that calling search spaces and partitions are properly configured. See the following example.

Example of Retrieving Parked Calls from Another Cluster

Two clusters exist in the network (cluster A and cluster B). Cluster A includes user A1 and user A2. Cluster B includes user B1 and user B2.

Cluster A includes call park numbers in the range of 81xx. Cluster B includes call park numbers in the range of 82xx, which the administrator configured.

Cluster A includes route patterns that are configured to other cluster park ranges as 82xx (routes to Cluster B). Cluster B includes route patterns that are configured to other cluster park ranges as 81xx (routes to Cluster A).

When user A1 parks a call at 8101, all users (which have correct partitions configured) in Cluster A and Cluster B can retrieve the parked call because of the route pattern configuration. When user B1 parks a call at 8202, all users (which have correct partitions configured) in Cluster A and Cluster B can retrieve the parked call because of the route pattern configuration. See Figure 10-2.

Figure 10-2 Retrieving Parked Calls by Using Intercluster Trunks

System Requirements for Call Park

To operate, call park requires the following software component:

Cisco Unified CallManager 5.0

The following SCCP and SIP phones support call park with the Park softkey in the Standard User and Standard Feature softkey templates:

Cisco Unified IP Phones (models 7941, 7961, 7970, 7971)

The following SCCP phones support call park with the Park softkey in the Standard User and Standard Feature softkey templates:

Cisco Unified IP Phones (models 7905, 7912, 7920, 7940, 7960)

The following SCCP phones support call park with the Call Park button on the phone button template:

Cisco Unified IP Phone model 30 (30 SP+ and 30 VIP)

Cisco Unified IP Phone model 12 (12 S, 12 SP, 12 SP+)

Cisco Unified IP Phone model 7910

Interactions and Restrictions

The following sections describe the interactions and restrictions for call park:

Interactions

Restrictions

Interactions

The following sections describe how call park interacts with Cisco Unified CallManager applications and call processing:

CTI Applications

Music On Hold

Route Plan Report

Calling Search Space and Partitions

Immediate Divert

Barge

Q.SIG Intercluster Trunks

CTI Applications

CTI applications (for example, Attendant Console) access call park functionality, including monitoring activity on call park DNs. To monitor a call park DN, an application or end user that is associated with the CTI application must be added to the Standard CTI Allow Call Park Monitoring user group.

Refer to the "Configuration Checklist for Cisco Unified CallManager Attendant Console" section on page 17-17 for details.

Music On Hold

Music on hold allows users to place calls on hold with music that a streaming source provides. Music on hold allows two types of hold:

User hold—The system invokes this type of hold when a user presses the Hold button or Hold softkey.

Network hold—This type of hold takes place when a user activates the transfer, conference, or call park feature, and the hold automatically gets invoked.

Route Plan Report

The route plan report displays the patterns and directory numbers that are configured in Cisco Unified CallManager. Use the route plan report to look for overlapping patterns and directory numbers before assigning a directory number to call park. Refer to the Route Plan Report chapter in the Cisco Unified CallManager Administration Guide.

Calling Search Space and Partitions

Assign the Call Park directory number or range to a partition to limit call park access to users on the basis of the device calling search space. See Calling Search Space Configuration and Partition Configuration in the Cisco Unified CallManager Administration Guide.

Immediate Divert

Call park supports Immediate Divert (iDivert softkey). For example, user A calls user B, and user B parks the call. User B retrieves the call and then decides to send the call to voice-messaging mailbox by pressing the iDivert softkey. User A receives the voice-messaging mailbox greeting of user B.

Barge

The following paragraphs describe the differences between Barge and cBarge with call park.

Barge with Call Park

The target phone (the phone that is being barged upon) controls the call. The barge initiator "piggy backs" on the target phone. The target phone includes most of the common features, even when the target is being barged; therefore, the barge initiator has no feature access. When the target parks a call, the barge initiator then must release its call (the barge).

cBarge with Call Park

The target and barge initiator act as peers. The cBarge feature uses a conference bridge, which makes it behave similar to a MeetMe conference. Both phones (target and barge initiator) have full access to their features.

Q.SIG Intercluster Trunks

When a user parks a call across a QSIG intercluster trunk or a QSIG gateway trunk, the caller who has been parked (the parkee) does not see the To parked number message. The phone continues to display the original connected number. The call has been parked, and the user who parked the call can retrieve it. When the call is retrieved from the parked state, the call continues, but the caller who was parked does not see the newly connected number.

Restrictions

The following restrictions apply to call park:

Cisco Unified CallManager can park only one call at each call park extension number.

Ensure each call park directory number, partition, and range is unique within the Cisco Unified CallManager cluster.

Each Cisco Unified CallManager to which devices are registered needs its own unique call park directory number and range.

Cisco Unified IP Phone 7902 cannot park a call (retrieval of parked calls only).

Cisco Unified CallManager Administration does not validate the call park numbers or range that you use to configure call park. To help identify invalid numbers or ranges and potential range overlaps, use the Cisco Unified CallManager Dialed Number Analyzer tool.

Cisco Unified CallManager Administration does not check that the value that is entered for Call Park Reversion Timer is less than the value that is entered for the Call Park Display Timer. If you entered a Call Park Reversion Timer value that is less than the Call Park Display Timer, call park numbers will not display on the phone.

See the "Configuring a Call Park Number" section for configuration details.

Installing and Activating Call Park

Call park, a system feature, comes standard with Cisco Unified CallManager software. It does not require special installation.

Configuring Call Park

This section contains the following information:

Call Park Configuration Checklist

Setting the Service Parameters for Call Park

Finding a Call Park Number

Configuring a Call Park Number

Deleting a Call Park Number

Troubleshooting Call Park

Call Park Configuration Checklist

Table 10-1 provides a checklist to configure Call Park.

Table 10-1 Call Park Configuration Checklist 

Configuration Steps
Related procedures and topics

Step 1 

Configure a partition for call park extension numbers to make partition available only to users who have the partition in their calling search space.

Configuring a Partition, Cisco Unified CallManager Administration Guide

Media Termination Point Configuration, Cisco Unified CallManager Administration Guide

Step 2 

Configure a unique call park number or define a range of call park extension numbers for each Cisco Unified CallManager in the cluster.

Configuring a Call Park Number

Step 3 

Add all servers that call park uses to the appropriate Cisco Unified CallManager group.

Note Servers and Cisco Unified CallManagers get configured during installation.

Cisco Unified CallManager Group Configuration, Cisco Unified CallManager Administration Guide

Step 4 

Assign the Standard User softkey template to each device that has call park access. For phones that do not use softkeys, the phone button template with the Call Park button automatically gets configured.

Softkey Template Configuration, Cisco Unified CallManager Administration Guide

Step 5 

In the User Group Configuration window, assign application and end users to the Standard CTI Allow Call Park Monitoring user group. This applies only to users associated with CTI applications requiring Call Park monitoring capability (for example, Attendant Console).

Adding Users to a User Group, Cisco Unified CallManager Administration Guide

Step 6 

Notify users that the call park feature is available.

Refer to the phone documentation for instructions on how users access call park features on their Cisco Unified IP Phone.

Setting the Service Parameters for Call Park

Cisco Unified CallManager provides two clusterwide service parameters for call park: Call Park Display Timer and Call Park Reversion Timer. Each service parameter includes a default and requires no special configuration.

Call Park Display Timer—Default specifies 10 seconds. This parameter determines how long a call park number displays on the phone that parked the call. Set this timer for each server in a cluster that has the Cisco CallManager service and call park configured.

Call Park Reversion Timer—Default specifies 60 seconds. This parameter determines the time that a call remains parked. Set this timer for each server in a cluster that has the Cisco CallManager service and call park configured. When this timer expires, the parked call returns to the device that parked the call.


Note To set the timers, choose System > Service Parameters and update the Call Park Display Timer and the Call Park Reversion Timer fields in the Clusterwide Parameters (Feature-General) pane.


Finding a Call Park Number

Because you may have several call park numbers in your network, Cisco Unified CallManager lets you locate specific call park numbers on the basis of specific criteria. Use the following procedure to locate call park numbers.


Note During your work in a browser session, Cisco Unified CallManager Administration retains your call park number search preferences. If you navigate to other menu items and return to this menu item, Cisco Unified CallManager Administration retains your call park number search preferences until you modify your search or close the browser.


Procedure


Step 1 Choose Call Routing > Call Park.

The Find and List Call Park Numbers window displays. Use the two drop-down list boxes to search for a call park number.

Step 2 From the first Find Call Park Numbers where drop-down list box, choose one of the following criteria:

Number

Partition

Description

CallManager


Note The criterion that you choose in this drop-down list box specifies how the list of call park numbers that your search generates will be sorted.


From the second Find Call Park Numbers where drop-down list box, choose one of the following criteria:

begins with

contains

ends with

is exactly

is empty

is not empty

Step 3 Specify the appropriate search text, if applicable, and click Find. You can also specify how many items per page to display.


Tip To find all call park numbers that are registered in the database, click Find without entering any search text.


A list of discovered call park numbers displays by

Call Park Number icon

Call Park Number

Partition

Description

CallManager

Step 4 From the list of records, click the Call Park Number that matches your search criteria.

The window displays the call park number that you choose.


Additional Information

See the "Related Topics" section.

Configuring a Call Park Number

This section describes how to add, copy, and update a single call park extension number or range of extension numbers.

Procedure


Step 1 Choose Call Routing > Call Park.

Step 2 Perform one of the following tasks:

To add a new Call Park Number, click Add New.

To copy a Call Park Number, use the procedure in the "Finding a Call Park Number" section to locate the call park number or range of numbers. Click the Copy icon.

To update a Call Park Number, use the procedure in the "Finding a Call Park Number" section to locate the call park number or range of numbers.

The Call Park Number Configuration window displays.

Step 3 Enter or update the appropriate settings as described in Table 10-2.

Step 4 To save the new or changed call park numbers in the database, click Save.


Additional Information

See the "Related Topics" section.

Call Park Configuration Settings

Table 10-2 describes the call park configuration settings. For related procedures, see the "Related Topics" section.

Table 10-2 Call Park Configuration Settings 

Field
Description

Call Park Number/Range

Enter the call park extension number. You can enter literal digits or the wildcard character X (the system allows one or two Xs). For example, enter 5555 to define a single call park extension number of 5555 or enter 55XX to define a range of call park extension numbers from 5500 to 5599.

Note You can create a maximum of 100 call park numbers with one call park range definition. Make sure that the call park numbers are unique.

Note You cannot overlap call park numbers between Cisco Unified CallManager servers. Ensure that each Cisco Unified CallManager server has its own number range.

Description

Provide a brief description of this call park number.

Partition

If you want to use a partition to restrict access to the call park numbers, choose the desired partition from the drop-down list box. If you do not want to restrict access to the call park numbers, choose <None> for the partition.

You can configure the number of partitions that display in this drop-down list box by using the Max List Box Items enterprise parameter. If more partitions exist than the Max List Box Items enterprise parameter specifies, the ellipsis button (...) displays next to the drop-down list box. Click the ... button to display the Select Partition window. Enter a partial partition name in the List items where Name contains field. Click the desired partition name in the list of partitions that displays in the Select item to use box and click OK.

Note To set the maximum list box items, choose System > Enterprise Parameters and update the Max List Box Items field under CCMAdmin Parameters.

Note Make sure that the combination of call park extension number and partition is unique within the Cisco Unified CallManager cluster.

Cisco Unified CallManager

Using the drop-down list box, choose the Cisco Unified CallManager to which these call park numbers apply.

Note You can create a maximum of 100 call park numbers with one call park range definition. Make sure that the call park numbers are unique.

Note You cannot overlap call park numbers between Cisco Unified CallManager servers. Ensure that each Cisco Unified CallManager server has its own number range.


Deleting a Call Park Number

This section describes how to delete call park numbers from the Cisco Unified CallManager database.

Procedure


Step 1 Using the procedure in the "Finding a Call Park Number" section, locate the call park number or range of numbers.

Step 2 Click the call park number or range of numbers that you want to delete.

Step 3 Click Delete.


Note You can delete multiple call park numbers from the Find and List Call Park Numbers window by checking the check boxes next to the appropriate call park numbers and clicking Delete Selected. You can delete all call park numbers in the window by clicking Select All and then clicking Delete Selected.



Additional Information

See the "Related Topics" section.

Troubleshooting Call Park

Table 10-3 provides troubleshooting recovery tips for common call park problems.

Table 10-3 Troubleshooting Tips for Call Park 

Problem Description
Recommended Action

User cannot park calls. When the user presses the Park softkey or feature button, the call does not get parked.

Ensure that a unique call park number is assigned to each Cisco Unified CallManager in the cluster. See the "Configuring a Call Park Number" section.

The partition that is assigned to the call park number does not match the partition that is assigned to the phone directory number. See the "Configuring a Call Park Number" section and the "Configuring a Directory Number" section in the Cisco Unified CallManager Administration Guide.

The call park number does not display long enough for the user.

Set the Call Park Display Timer to a longer duration. See the "Setting the Service Parameters for Call Park" section.


Additional Information

See the "Related Topics" section.

Related Topics

Call Park

Configuring a Call Park Number

Finding a Call Park Number

Deleting a Call Park Number

Troubleshooting Call Park

Phone Button Template Configuration, Cisco Unified CallManager Administration Guide

Cisco Unified IP Phone Configuration, Cisco Unified CallManager Administration Guide

Partition Configuration, Cisco Unified CallManager Administration Guide

Media Termination Point Configuration, Cisco Unified CallManager Administration Guide

Route Plan Report, Cisco Unified CallManager Administration Guide

Softkey Template Configuration, Cisco Unified CallManager Administration Guide

End User Configuration, Cisco Unified CallManager Administration Guide

User Group Configuration, Cisco Unified CallManager Administration Guide

Clustering, Cisco Unified CallManager System Guide

Cisco Unified IP Phone Administration Guide for Cisco Unified CallManager

Cisco Unified IP Phone user documentation and release notes (all models)