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Table Of Contents

Configuring Caller ID Blocking

Contents

Restrictions for Caller ID Blocking

Information about Caller ID Blocking

Caller ID Blocking on Outbound Calls

How to Configure Caller ID Blocking

Blocking Caller ID For Local Calls From a Directory Number

Blocking Caller ID For All Outbound Calls

Verifying Caller ID Blocking

Configuration Examples for Caller ID Blocking

Caller ID Blocking Code: Example

Caller ID Blocking for Outbound Calls: Example

Additional References

Related Documents

Technical Assistance

Feature Information for Caller ID Blocking


Configuring Caller ID Blocking

Last Updated: March 26, 2007

This chapter describes the caller-ID (CLID) blocking feature in Cisco Unified Communications Manager Express (Cisco Unified CME).

Finding Feature Information in This Module

Your Cisco Unified CME version may not support all of the features documented in this module. For a list of the versions in which each feature is supported, see the "Feature Information for Caller ID Blocking" section.

Contents

• Restrictions for Caller ID Blocking

• Information about Caller ID Blocking

• How to Configure Caller ID Blocking

• Configuration Examples for Caller ID Blocking

• Additional References

• Feature Information for Caller ID Blocking

Restrictions for Caller ID Blocking

Caller ID blocking on outbound calls does not apply to PSTN calls through foreign exchange office (FXO) ports. Caller ID features on FXO-connected subscriber lines are under the control of the PSTN service provider, who may require you to subscribe to their caller ID blocking service.

Information about Caller ID Blocking

To enable Caller ID Blocking, you should understand the following concept:

• Caller ID Blocking on Outbound Calls

Caller ID Blocking on Outbound Calls

Phone users can block caller-ID displays on calls from a particular ephone-dn, or you can selectively choose to block the name or number on outbound calls from a particular dial peer.

The display of caller ID information for outgoing calls from a particular ephone-dn can be blocked on a per-call basis, allowing users to maintain their privacy when necessary. The system administrator defines a code for caller ID blocking in Cisco Unified CME. Users then dial the code before making any call on which they do not want their number displayed on the called-party phone. The caller ID is sent, but its presentation parameter is set to "restricted" so that the caller ID is not displayed.

Blocking CLID displays for local calls from a particular extension tells the far-end gateway device to block display of calling-party information for the calls received from this ephone-dn.

Alternatively, you can allow the local display of CLID information and independently block the CLID name or number on outbound VoIP calls. This configuration has the benefit of allowing caller-ID display for local calls while preventing caller-ID display for external calls going over VoIP. This feature can be used for PSTN calls that go out over ISDN.

How to Configure Caller ID Blocking

This section contains the following tasks:

• Blocking Caller ID For Local Calls From a Directory Number (optional)

• Blocking Caller ID For All Outbound Calls (optional)

• Verifying Caller ID Blocking (optional)

Blocking Caller ID For Local Calls From a Directory Number

To define a code that phone users can dial to block caller ID display on all local calls from a particular ephone-dn, perform the following steps.

SUMMARY STEPS

1. enable

2. configure terminal

3. telephony-service

4. caller-id block code code-string

5. exit

6. ephone-dn dn-tag

7. caller-id block

8. end

DETAILED STEPS

 
Command or Action
Purpose

Step 1 

enable

Example:

Router> enable

Enables privileged EXEC mode.

•Enter your password if prompted.

Step 2 

configure terminal

Example:

Router# configure terminal

Enters global configuration mode.

Step 3 

telephony-service

Example:

Router(config)# telephony-service

Enters telephony-service configuration mode.

Step 4 

caller-id block code code-string

Example:

Router(config-telephony)# caller-id block code *1234

(Optional) Defines a code that users can enter before making calls on which the caller ID should not be displayed.

•code-string—Digit string of up to 16 characters. The first character must be an asterisk (*).

Step 5 

exit

Example:

Router(config-telephony)# exit

Exits telephony-service configuration mode.

Step 6 

ephone-dn dn-tag

Example:

Router(config)# ephone-dn 3

Enters ephone-dn configuration mode.

Step 7 

caller-id block

Example:

Router(config-ephone-dn)# caller-id block

(Optional) Blocks display of all caller-ID information for outbound calls that originate from this ephone-dn.

•By default, caller ID is not blocked on calls that originate from a Cisco Unified IP phone.

•This command tells the far-end gateway device to block display of calling-party information for the calls received from this ephone-dn.

Step 8 

end

Example:

Router(config-dial-peer)# end

Returns to privileged EXEC mode.

Blocking Caller ID For All Outbound Calls

To block the CLID name or number on outbound VoIP calls from a particular dial peer, perform the following steps.

SUMMARY STEPS

1. enable

2. configure terminal

3. dial-peer voice tag [pots | voip]

4. clid strip

5. clid strip name

6. end

DETAILED STEPS

 
Command or Action
Purpose

Step 1 

enable

Example:

Router> enable

Enables privileged EXEC mode.

•Enter your password if prompted.

Step 2 

configure terminal

Example:

Router# configure terminal

Enters global configuration mode.

Step 3 

dial-peer voice tag [pots | voip]

Example:

Router(config)# dial-peer voice 3 voip

Enters dial-peer configuration mode.

Note You can configure caller-ID blocking on POTS dial peers if the POTS interface is ISDN. This feature is not available on FXO/CAS lines.

Step 4 

clid strip

Example:

Router(config-dial-peer)# clid strip

(Optional) Removes the calling-party number from the CLID information being sent with VoIP calls.

Step 5 

clid strip name

Example:

Router(config-dial-peer)# clid strip name

(Optional) Removes the calling-party name from the CLID information being sent with VoIP calls.

Step 6 

end

Example:

Router(config-dial-peer)# end

Returns to privileged EXEC mode.

Verifying Caller ID Blocking

Step 1 Use the show running-config command to display caller ID blocking parameters, which may appear in the telephony-service, ephone-dn, or dial-peer portions of the output.

Router# show running-config

dial-peer voice 450002 voip
translation-profile outgoing 457-456
destination-pattern 457
session target ipv4:10.43.31.81
dtmf-relay h245-alphanumeric
codec g711ulaw
no vad
 clid strip
!
telephony-service
fxo hook-flash
 load 7960-7940 P00305000600
load 7914 S00103020002
 max-ephones 100
max-dn 500
ip source-address 10.115.34.131 port 2000
max-redirect 20
no service directed-pickup
timeouts ringing 10
system message XYZ Company
voicemail 7189
max-conferences 8 gain -6
moh music-on-hold.au
 caller-id block code *1234
web admin system name cisco password cisco
dn-webedit
time-webedit
transfer-system full-consult
transfer-pattern 92......
transfer-pattern 91..........
transfer-pattern 93......
transfer-pattern 94......
transfer-pattern 95......
transfer-pattern 96......
transfer-pattern 97......
transfer-pattern 98......
 transfer-pattern .T
secondary-dialtone 9
after-hours block pattern 1 91900 7-24
after-hours block pattern 2 9976 7-24
!
create cnf-files version-stamp 7960 Jul 13 2004 03:39:28
!
ephone-dn 2 dual-line
number 126
 preference 1
call-forward busy 500
caller-id block

Configuration Examples for Caller ID Blocking

This section contains the following examples:

• Caller ID Blocking Code: Example

• Caller ID Blocking for Outbound Calls: Example

Caller ID Blocking Code: Example

The following example defines a code of *1234 for phone users to enter to block caller ID on their outgoing calls:

telephony-service
 caller-id block code *1234

Caller ID Blocking for Outbound Calls: Example

The following example sets CLID blocking for the ephone-dn with tag 3.

ephone-dn 3
 number 2345
 caller-id block

The following example blocks the display of CLID name and number on VoIP calls but allows CLID display for local calls:

ephone-dn 3
 number 2345
dial-peer voice 2 voip
 clid strip
 clid strip name

Additional References

The following sections provide references related to Cisco Unified CME features.

Related Documents

Related Topic
Document Title

Cisco Unified CME configuration

• Cisco Unified CME Command Reference

• Cisco Unified CME Documentation Roadmap

Cisco IOS commands

• Cisco IOS Voice Command Reference

• Cisco IOS Software Releases 12.4T Command References

Cisco IOS configuration

• Cisco IOS Voice Configuration Library

• Cisco IOS Software Releases 12.4T Configuration Guides

Phone documentation for Cisco Unified CME

• Quick Reference Cards

• User Guides


Technical Assistance

Description
Link

The Cisco Support website provides extensive online resources, including documentation and tools for troubleshooting and resolving technical issues with Cisco products and technologies. Access to most tools on the Cisco Support website requires a Cisco.com user ID and password. If you have a valid service contract but do not have a user ID or password, you can register on Cisco.com.

http://www.cisco.com/techsupport


Feature Information for Caller ID Blocking

Table 35 lists the features in this module and enhancements to the features by version.

To determine the correct Cisco IOS release to support a specific Cisco Unified CME version, see the Cisco Unified CME and Cisco IOS Software Version Compatibility Matrix at http://www.cisco.com/en/US/products/sw/voicesw/ps4625/products_documentation_roadmap09186a0080189132.html.

Use Cisco Feature Navigator to find information about platform support and software image support. Cisco Feature Navigator enables you to determine which Cisco IOS software images support a specific software release, feature set, or platform. To access Cisco Feature Navigator, go to http://www.cisco.com/go/cfn. An account on Cisco.com is not required.

Note Table 35 lists the Cisco Unified CME version that introduced support for a given feature. Unless noted otherwise, subsequent versions of Cisco Unified CME software also support that feature.

Table 35 Feature Information for Caller ID Blocking

Feature Name
Cisco Unified CME
Version
Feature Information

Caller ID Blocking

3.0

Caller ID blocking per local call was introduced.

1.0

Caller ID blocking for outbound calls was introduced.


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Posted: Wed Aug 15 13:51:08 PDT 2007
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