Guest

Cisco Unified Communications Manager (CallManager)

Unified Communications Manager 5.x and 6.x: Caller ID Blocking Configuration Example

Document ID: 109644

Updated: Mar 11, 2009

   Print

Introduction

Cisco IP Phone users can block or mask caller ID displays for calls from a particular phone. The display of caller ID information for outgoing calls from a particular phone or gateway can be blocked or masked on a per-call basis, which allows users to maintain their privacy when necessary.

This document describes how to block or hide the caller ID or transform the caller ID for the outgoing calls on Cisco Unified Communications Manager 5.x and 6.x.

Prerequisites

Requirements

Cisco recommends that you have knowledge of Cisco Unified Communications Manager Administration.

Components Used

The information in this document is based on Cisco Unified Communications Manager 5.x and 6.x.

The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command.

Conventions

Refer to the Cisco Technical Tips Conventions for more information on document conventions.

Configure

Cisco Unified Communications Manager provides flexible configuration options to allow and to restrict the display of the directory number and name information for both calling and called or connected parties.

Calling ID or called party display/hide/transform feature can be configured through the Cisco Unified Communications Manager Administration from any one these locations:

Directory Number Configuration Page

From the Directory Number Configuration page, you can configure and display the calling party ID that appears on the called party phone when a call is placed from the line numbers (directory numbers) that are assigned to a specific phone.

  1. Choose Device > Phone.

    The Find and List Phones page appears.

  2. Select the phone that you want to configure.

    The Phone Configuration page appears.

  3. From the Association Information area on the left side of the page, select the phone directory number for which you want to configure this feature.

    The Directory Number Configuration page appears.

    The External Phone Number Mask field on this page indicates the phone number (or mask) that is used to send Caller ID information when a call is placed from this phone line.

    caller_ID_blocking01.gif

    You can enter a maximum of 24 numbers and X characters. The Xs represent the directory number and must appear at the end of the pattern.

    For example, if you specify a mask of 975767XXXX, an external call from extension 1234 displays a caller ID number of 9757671234. This value applies only to the current device unless you check the Update Shared Device Settings check box located to the right of the field and then click Propagate Selected. (The Update Shared Device Settings check box displays only if other devices share this directory number.)

  4. Click Save in order to save the changes, and then click Reset in order to apply the changes to this phone.

    Note: Repeat the same procedure for all available phones and their respective directory numbers.

Refer to the Directory Number Configuration section of the Cisco Unified Communications Manager System Guide for more information.

Route Pattern Configuration Page

You can configure this feature through the Route Pattern Configuration page.

Note: The route pattern configuration overrides the directory number configuration.

  1. Choose Call Routing > Route/Hunt > Route Pattern.

    The Find and List Route Patterns page appears.

  2. Find and locate the route pattern that you use currently for routing calls to the PSTN, and then scroll down to the Calling Party Transformations section.

  3. Check or uncheck the Use Calling Party's External Phone Number Mask check box.

    • If you check the Use Calling Party's External Phone Number Mask check box, CallManager uses the number that you configured on the Directory Number Configuration page as the caller ID.

    • If you uncheck the Use Calling Party's External Phone Number Mask check box, then you can configure the Calling Party Transform Mask. For example, you can enter the number 989898XXXX, and Cisco CallManager replaces XXXX with the phone's 4-digit extension.

    caller_ID_blocking02.gif

  4. Click Save in order to save your changes.

Refer to the Understanding Route Plans section of the Cisco Unified Communications Manager System Guide for more information.

Route List Detail Configuration Page

You can configure this same feature through the Route List Detail Configuration page.

Note: The route list configuration overrides the settings that you configured on the Route Pattern Configuration page and on the phone (Directory Number Configuration page).

  1. Choose Call Routing > Route/Hunt > Route List.

    The Find and List Route Lists page appears.

  2. Find and locate the route list that you currently use for routing calls to the outside.

  3. Scroll down to the Calling Party Transformations section.

    caller_ID_blocking03.gif

  4. Enter the appropriate value in the Use Calling Party's External Phone Number Mask field.

    • If you enter On, the number that you configured in the Directory Number Configuration page is used as the caller ID.

    • If you enter Off, you must configure the Calling Party Transform Mask field for the caller ID.

  5. Click Save in order to save your changes.

Refer to the Route List Configuration section of the Cisco Unified Communications Manager System Guide for more information.

Gateway Configuration Page

You can configure this feature through the Gateway Configuration page.

Note: The gateway configuration overrides all the previous configurations.

Complete these steps to transform the calling party ID that appears on the called party phone.

  1. Choose Device > Gateway.

    The Find and List Gateway page appears.

  2. Select the PRI that you use for outgoing calls from the list of records that display.

  3. Scroll down to the Call Routing Information - Outbound Calls section of the Gateway Configuration page.

  4. Enter a number in the Caller ID DN field.

    For example, 978858XXXX (CallManager fills out the XXXX with phone's 4-digit extension while the user makes calls).

  5. Choose Allowed from the Calling Party Presentation drop-down list.

    The Allowed option allows CallManager to display the calling party number or name.

    caller_ID_blocking04.gif

  6. Click Save in order to save the changes to CallManager, and then click Reset in order to reset the gateway for the changes to take effect.

Complete these steps in order to hide or block the calling party ID that appears on the called party phone:

  1. Choose Device > Gateway.

    The Find and List Gateway page appears.

  2. Select the PRI that you use for outgoing calls from the list of records that display.

  3. Scroll down to the Call Routing Information - Outbound Calls section of the Gateway Configuration page.

  4. Choose Restricted from the Calling Party Presentation drop-down list.

    The Restricted option is used to block the display of the calling party number or name.

    caller_ID_blocking05.gif

  5. Click Save in order to save your changes to CallManager, and click Reset in order to reset the gateway to take effect the changes.

This configuration hides the calling ID that appears on the called party phone. On the called ID side, calling ID appears as the text Private Number, instead of the calling number. The user on the called side is unable to see the calling number.

Refer to the Gateway Configuration section of the Cisco Unified Communications Manager System Guide for more information.

How to Block Caller ID on Shared Lines

Complete these steps in order to block caller ID on shared lines:

  1. In the Cisco Unified Communications Manager Administration Page, choose System > Service Parameters.

  2. From the Server drop-down list, choose the server.

  3. From the Service drop-down list, choose Cisco Callmanager Service.

  4. Under the Clusterwide Parameters (Device - Phone) section, scroll down to Privacy Setting, set this parameter to True, and click Update.

    The Privacy Setting parameter determines whether the Privacy feature is enabled for phones that use the Default value in the Privacy setting on the Phone Configuration window in Cisco CallManager Administration. Privacy removes the call information from all phones that share lines and blocks other shared lines from barging in on its calls. Valid values specify True (Privacy is enabled) or False (Privacy is disabled). Affected IP phone(s) must be reset for the parameter change to take effect.

  5. Reset the affected IP phone(s) or click Save on the affected Remote Destination Profile(s) in order for the parameter change to take effect.

Verify

Here are a few things to remember in order to verify that your configuration works properly:

  • If the Calling Party Presentation field is set to Allowed in the gateway configuration, the transformation of digits occur. For example, if a user from the extension 3000 calls a remote location user, that remote user can see the calling number as 9788583000.

  • If the Calling Party Presentation field is set to Restricted in the gateway configuration, the CallManager hides the calling number while the user makes calls to outside. For example, if a user from the extension 3000 calls a remote location user, that remote user sees Private number only. The remove user is unable to see the calling number.

Related Information

Updated: Mar 11, 2009
Document ID: 109644