Cisco Unified CallManager Features and Services Guide, Release 4.2(3)
Cisco WebDialer
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Cisco WebDialer

Table Of Contents

Cisco WebDialer

Introducing Cisco WebDialer

Webdialer Servlet

Redirector Servlet

Redundancy

System Requirements for Cisco WebDialer

Interactions and Restrictions

Interactions

Restrictions

Installing and Activating Cisco WebDialer

Configuring Cisco WebDialer

Cisco WebDialer Configuration Checklist

Configuring the Webdialer Servlet

Setting Service Parameters for the Webdialer Servlet

Configuring the Redirector Servlet (Optional)

Using directory.asp

Configuring Application Dial Rules (Optional)

Creating a Proxy User (Optional)

Troubleshooting

Trace Settings (optional)

Alarms and Perfmon Counters

Where to Find More Information


Cisco WebDialer


Cisco WebDialer, used in conjunction with Cisco Unified CallManager, allows Cisco Unified IP Phone users to make calls from web and desktop applications.

This chapter provides the following information about Cisco WebDialer:

Introducing Cisco WebDialer

Redundancy

System Requirements for Cisco WebDialer

Interactions and Restrictions

Installing and Activating Cisco WebDialer

Configuring Cisco WebDialer

Troubleshooting

Where to Find More Information

Introducing Cisco WebDialer

Cisco WebDialer, which is installed on a Cisco Unified CallManager server and used in conjunction with Cisco Unified CallManager, allows Cisco Unified IP Phone users to make calls from web and desktop applications. For example, Cisco WebDialer uses hyperlinked telephone numbers in a company directory to allow users to make calls from a web page by clicking on the telephone number of the person that they are trying to call.

Cisco WebDialer includes two main components: the Webdialer and Redirector servlets.

Webdialer Servlet

The Webdialer servlet, a Java servlet, allows Cisco Unified CallManager users in a specific cluster to make and end calls, as well as to access their phone and line configuration.

An application can interact with the Webdialer servlet through two interfaces:

The SOAP over HTTP interface—This interface that is based on the Simple Object Access Protocol (SOAP) gets used to develop desktop applications such as Microsoft Outlook Add-in and SameTime Client Plug-in. Developers can use the isClusterUserSoap interface to design multicluster applications that require functionality similar to a Redirector servlet.

HTML over HTTP interface—This interface that is based on the HTTP protocol gets used to develop web-based applications such as the Cisco Unified CallManager directory search page (directory.asp). Developers who use this interface can use the Redirector servlet for designing multicluster applications.

Redirector Servlet

The Redirector servlet, a Java based Tomcat servlet, finds the Cisco Unified CallManager cluster for a request that a Cisco WebDialer user makes. It redirects that request to the specific Cisco WebDialer server that is located in that user Cisco Unified CallManager cluster. Availability of the Redirector servlet occurs only for multicluster applications and only for applications that are developed by using HTML over HTTP interfaces.

Figure 14-1 illustrates how a Redirector servlet redirects a call in a multicluster environment.

Figure 14-1 Multiple Clusters

Example of Cisco WebDialer Using the Redirector Servlet

For example, consider three clusters, each one in a single city such as San Jose (SJ-CM), Dallas (D-CM), and New York (NY-CM). Each cluster contains three Cisco Unified CallManager servers with Webdialer servlets that have been configured for Cisco Unified CallManager servers SJ-CM1, D-CM2, and NY-CM3.

The system administrator configures the Webdialer servlets on any of the Cisco Unified CallManager servers by entering the IP address of that specific Cisco Unified CallManager server in the List of WebDialers service parameter (see the "Setting Service Parameters for the Webdialer Servlet" section). For information on configuring Webdialer and Redirector servlets, refer to the "Configuring the Webdialer Servlet" section and the "Configuring the Redirector Servlet (Optional)" section.

When a user who is located in San Jose clicks on a telephone number in the corporate directory search window that is enabled by Cisco WebDialer, the following actions happen:

1. The Cisco Unified CallManager server sends an initial makeCall HTTP request to the Redirector servlet.

2. If this request is received for the first time, the Redirector servlet reads the Cisco WebDialer server cookie and finds it empty.

For a repeat request, the Redirector servlet reads the IP address of the Cisco WebDialer server that previously serviced the client and sends a isClusterUser HTTP request only to that server.

3. The Redirector servlet sends a response that asks for information, which results in the authentication dialog box opening for the user.

4. The user enters the Cisco Unified CallManager user ID and password and clicks the Submit button.

5. The Redirector servlet reads only the user identification from this information and sends an isClusterUser HTTP request to each Cisco WebDialer server that the system administrator has configured.

Figure 14-1 illustrates how this request is sent to the Webdialer servlets that have been configured for SJ-CM1, D-CM2, and NY-CM3. Depending on the geographical location of the calling party, the Webdialer servlet from the cluster that represents that location responds positively to the Redirector servlet. The remaining Webdialer servlets that were contacted return a negative response. The Webdialer servlet SJ-CM1 responds positively to the request because the calling party is located in San Jose (SJ-CM).

6. The Redirector servlet redirects the original request from the user to SJ-CM1.

Redundancy

Because redundancy is important for applications that are running in a multicluster environment, this section describes one method to achieve that redundancy.

If a single Redirector servlet is supporting multiple Cisco WebDialers in a multicluster environment, it provides a single point of failure. For example, in Figure 14-1, a Redirector servlet runs on the San Jose cluster and also services the New York and Dallas clusters. If this Redirector servlet fails to run on the San Jose cluster, the users who are serviced by all three clusters cannot use Cisco WebDialer.

To avoid this single point of failure, configure Redirector servlets for each cluster. If the directory search window points to a URL such as http://SanJoseCluster.company.com/webdialer/Redirector, change that URL to a virtual link such as http://webdialer-service.company.com/webdialer/Redirector. This virtual link points to a virtual machine that is using a Cisco DistributedDirector. All the Redirector servlets operate behind this virtual link.

For more information on installing and configuring Cisco DistributedDirector, refer to the suite of documents for Cisco DistributedDirector.

System Requirements for Cisco WebDialer

Cisco WebDialer requires the following software component:

Cisco Unified CallManager 4.0(1) or later

The following phones support Cisco WebDialer:

Cisco Unified IP Phones 7900 models

To configure your company directory search window for Cisco WebDialer or the Cisco Unified CallManager directory search window, you must

Install and configure Cisco Unified CallManager.

Configure Cisco WebDialer.

For documentation on installing and configuring Cisco Unified CallManager, refer to the "Where to Find More Information" section.

Interactions and Restrictions

The following sections describe the interactions and restrictions for Cisco WebDialer:

Interactions

Restrictions

Interactions

The following interactions apply to Cisco WebDialer:

Cisco WebDialer uses the Cisco Tomcat Service that hosts the Cisco Unified CallManager Extension Mobility and Cisco Unified CallManager Assistant features.

When using Client Matter Codes (CMC), the user must enter the proper code at the tone; otherwise, the IP phone disconnects, and the user receives reorder tone.

When using Forced Authorization Codes (FMC), the user must enter the proper code at the tone; otherwise, the IP phone disconnects, and the user receives reorder tone.

Restrictions

Cisco WebDialer only supports Skinny Client Control Protocol (SCCP) based phones that Cisco Computer Telephony Integration (CTI) supports.

Installing and Activating Cisco WebDialer

Cisco WebDialer automatically installs on the server on which you installed Cisco Unified CallManager.

Perform the following procedure to activate Cisco WebDialer on the Cisco Unified CallManager server.

Procedure


Step 1 Choose Application > Cisco Unified CallManager Serviceability.

Step 2 Choose Tools > Service Activation.

Step 3 Choose the Cisco Unified CallManager server that is listed in the Servers pane.

Step 4 Check the box next to Cisco WebDialer.

Step 5 Click Update.


Note Do not restart the Cisco Tomcat Service.



Configuring Cisco WebDialer

This section contains the following information:

Cisco WebDialer Configuration Checklist

Configuring the Webdialer Servlet

Setting Service Parameters for the Webdialer Servlet

Configuring the Redirector Servlet (Optional)

Cisco WebDialer Configuration Checklist

Table 14-1 provides a configuration checklist for Cisco WebDialer.

Table 14-1 Cisco WebDialer Configuration Checklist 

Configuration Steps
Related procedures and topics

Step 1 

Install and activate the Cisco WebDialer service.

Installing and Activating Cisco WebDialer

Step 2 

Configure the Webdialer servlet.

Setting Service Parameters for the Webdialer Servlet

Step 3 

(Optional) Configure the Redirector servlet.

Configuring the Redirector Servlet (Optional)

Step 4 

(Optional) Configure the application dial rules for multiple cluster applications.

Configuring Application Dial Rules (Optional)

Step 5 

(Optional) Create a proxy user.

Creating a Proxy User (Optional)

Configuring the Webdialer Servlet

To configure the Webdialer servlet

Activate the Cisco WebDialer service. See the "Installing and Activating Cisco WebDialer" section.

Set trace settings (optional). See the "Trace Settings (optional)" section.

Set the Cisco WebDialer service parameters. See the "Setting Service Parameters for the Webdialer Servlet" section.

Setting Service Parameters for the Webdialer Servlet

Cisco Unified CallManager provides the following service parameters for the Webdialer servlet:

List of WebDialers—This parameter lists IP addresses for all Cisco WebDialers in your corporation. To enter new values, enter the IP address of the Cisco Unified CallManager server on which Cisco WebDialer is enabled.

Ensure that each IP address is separated by a space. Ensure that only one Webdialer servlet per cluster is enabled. If more than one Webdialer servlet per cluster is enabled, a drop-down menu on the computer displays when the user clicks the telephone number of the person that the user wants to call.

This drop-down menu contains the different locations where the calling party (end user making the call) is located. The end user chooses the appropriate location and proceeds to make the call.

Primary Cisco CTIManagerEnter the IP address of the primary Cisco CTIManager.

The default IP address of the CTI Manager specifies 127.0.0.1, which is the local host server that is used to set up Cisco WebDialer.

The maximum length specifies 15 digits.

Backup Cisco CTIManager—Enter the IP address of the backup Cisco CTIManager. The maximum length specifies 15 digits. No IP address implies that no backup Cisco CTI Manager exists.

User Session Expiry (in hours)—Enter the duration, in hours, for which the user login session is valid.

A default value of 0 indicates that the login session is valid for an indefinite time, until Cisco Tomcat Service is restarted the next time.

The minimum length specifies 0 hours, and the maximum length specifies 168 hours.

Duration of End Call Dialog (in seconds)—Enter the duration, in seconds, to display the dialog to end a call. This dialog indicates that the user must end the call if the user dialed out in error.

The default value specifies 15 seconds, with a maximum value of 60 seconds and a minimum value of 10 seconds.

To disable the Duration of End Call Dialog service parameter, the user checks the Disable Auto-Close check box in the User Options window. If the Disable Auto-Close check box is checked, the End Call dialog does not close automatically, and the Hangup button returns the user to the Make Call window.

Use the following procedure initially to set or modify existing service parameters for the Webdialer servlet.

Procedure


Step 1 Choose Service > Service Parameters.

Step 2 From the Service Parameters Configuration window, choose the Cisco Unified CallManager server.

Step 3 Choose the Cisco WebDialer service.

Default values already exist for the parameters Primary Cisco CTIManager, Duration of End Call Dialog, and User SessionExpiry (InHours). Enter new values if required by your application.

The parameter Backup Cisco CTIManager does not have any default values assigned to it. Enter values for this parameter if your application requires a backup Cisco CTIManager.

Step 4 For the new parameter values to take effect, restart the Cisco Tomcat Service.


Configuring the Redirector Servlet (Optional)

Configure the Redirector servlet only if your applications require multiple clusters. For single-cluster applications, use the Cisco Unified CallManager directory search window (directory.asp) that is bundled with Cisco Unified CallManager.

Perform the following procedure to configure the Redirector servlet.

Procedure


Step 1 Choose Service > Service Parameters.

Step 2 From the Service Parameters Configuration window, choose the Cisco Unified CallManager server.

Step 3 Choose the Cisco WebDialer service.

Step 4 For the parameter, List of WebDialers, enter new values as required by your application. See the "Setting Service Parameters for the Webdialer Servlet" section for a description of this service parameter.


Using directory.asp

For single-cluster applications, access Cisco WebDialer through the Cisco Unified CallManager directory search window (directory.asp), which is bundled with Cisco Unified CallManager and which you can access at the following URL:

http://<CallManager_server_on_which_Cisco WebDialer is configured>/CCMuser/directory.asp

You can also access Cisco WebDialer through customized directory search applications that can be developed by using Simple Object Access Protocol (SOAP) or HTML interfaces. For information on these interfaces, refer to the Cisco WebDialer API Reference Guide.

Configuring Application Dial Rules (Optional)

Ensure that the application dial rules are configured for multiple cluster applications of Cisco WebDialer. You do not need to configure these dial rules if you are using the Cisco Unified CallManager directory search window (directory.asp) for single-cluster applications.

For information on configuring these application dial rules, refer to Adding a Dial Rule in the Cisco Unified CallManager Administration Guide.

Creating a Proxy User (Optional)

Create a proxy user if you are using the makeCallProxy HTML over HTTP interface to develop an application for using Cisco WebDialer. For information on the makeCallProxy interface, refer to the makeCallProxy section in the Cisco WebDialer API Reference Guide.

You can enable authentication proxy rights for either an existing user or a new user.

Authentication Proxy Rights for Existing User

Perform the following procedure to enable authentication proxy rights for an existing user.

Procedure


Step 1 Choose User > Global Directory.

Step 2 Enter the name of the Cisco Unified CallManager user and click Search.

A user information window that lists the Last Name, First Name, User ID, and Department of the user opens.

Step 3 Click any field that is listed in Step 2.

A user configuration window displays for that user.

Step 4 Click the Extension Mobility link from the left panel.

The Extension Mobility window displays for that user.

Step 5 Click the Enable Authentication Proxy Rights check box.

Step 6 Click Update Selected.


Authentication Proxy Rights for New User

Perform the following procedure to enable authentication proxy rights for a new user.

Procedure


Step 1 Choose User > Add New User.

Step 2 Enter the following mandatory fields:

First Name; Last Name; User ID; User Password; Confirm Password; PIN; and Confirm PIN.

Step 3 Click Insert.

Step 4 Click the Extension Mobility link from the left panel. The Extension Mobility window displays for that user.

Step 5 Check the Enable Authentication Proxy Rights check box.

Step 6 Click Update Selected.


Troubleshooting

For information about troubleshooting tools, error messages, and how to recover from Cisco WebDialer problems, refer to the Troubleshooting Guide for Cisco Unified CallManager. For information about trace settings, see the "Trace Settings (optional)" section. For information about alarms and perfmon counters, see the "Alarms and Perfmon Counters" section.

Trace Settings (optional)

Perform the following procedure to enable debug traces for Cisco WebDialer.

Procedure


Step 1 Choose Application > Cisco Unified CallManager Serviceability.

Step 2 Choose Trace > Configuration.

Step 3 Choose the Cisco Unified CallManager server that is listed in the Servers pane.

The window displays the service names for the server that you chose.

Step 4 Choose the Cisco WebDialer service.

Step 5 In the Trace Configuration window, change the trace settings according to your troubleshooting requirements. For more information on traces, refer to the Cisco Unified CallManager Serviceability Administration Guide.

Step 6 Click Update.


Note Do not restart the Cisco Tomcat Service.



Alarms and Perfmon Counters

Cisco WebDialer generates its own alarms and has its own perfmon counters. For more information on alarms and perfmon counters for Cisco WebDialer, refer to the Cisco Unified CallManager Serviceability System Guide.

Where to Find More Information

This section lists documents that provide information on additional Cisco technology.

Related Topics

Service Parameters Configuration, Cisco Unified CallManager Administration Guide

Cisco Unified IP Phone Configuration, Cisco Unified CallManager Administration Guide

Application Dial Rules Configuration, Cisco Unified CallManager Administration Guide

Additional Cisco Documentation

Cisco Unified CallManager Release 4.2—This suite of documents relates to the installation and configuration of Cisco Unified CallManager. Refer to the Cisco Unified CallManager Documentation Guide for Release 4.2 for a list of documents on installing and configuring Cisco Unified CallManager 4.2.

Cisco Unified IP Phones and Services—This suite of documents relates to the installation and configuration of Cisco Unified IP Phones.

Customizing Your Cisco Unified IP Phone on the Web—This document describes how to use the Cisco Unified CallManager User Options windows. It provides information on Cisco WebDialer, so the user can make calls from the web by clicking a telephone number that is linked to the company directory.