Network and Feature Services

A CUCM cluster can consist of up to 20 servers. Each server can fulfill different tasks, such as running a TFTP or DHCP server, being the database publisher, processing calls, providing media resources, and so on.

Depending on the usage of a server, different services have to be activated on the system. There are two types of services on CUCM servers:

■ Network services: Network services are automatically activated and are required for the operation of the server. Network services cannot be activated or deactivated by the administrator, but they can be stopped, started, or restarted from the Cisco Unified Serviceability web interface. Just choose Control Center > Network Services.

■ Feature services: Feature services can be selectively activated or deactivated per server to assign specific tasks or functions (call processing, TFTP, and so on) to a certain server. Feature services can be activated and deactivated by the administrator from the Cisco Unified Serviceability web interface (Tools > Service Activation). Feature services can be started, stopped, or restarted from the Cisco Unified Serviceability web interface (Control Center > Feature Services).

Network Services

Network services are the operating system services that CUCM relies on. Network services are summarized as follows:

■ Performance and monitoring services: Cisco CallManager Serviceability RTMT, Cisco RTMT Reporter

■ Backup and restore services: Cisco DRF Master, Cisco DRF Local System Services: Cisco CallManager Serviceability, Cisco CDP, Cisco Trace Collection Service

■ Platform services: Cisco Database, Cisco Tomcat, SNMP Master Agent

■ DB services: Cisco Database Layer Monitor

■ SOAP services: SOAP Real Time Service APIs and so on

■ CM services: Cisco CallManager Personal Directory, Cisco Extension Mobility Application, Cisco CallManager Cisco IP Phone Services

■ CDR services: Cisco CDR Repository Manager, CDR Agent

■ Admin services: Cisco CallManager Admin

Feature Services

Feature services are the CUCM-related services that run on top of the operating system and database. Feature services are summarized as follows:

■ Database and admin services: Cisco AXL Web Service, Cisco Bulk Provisioning Service, Cisco TAPS Service

■ Performance and monitoring services: Cisco Serviceability Reporter, Cisco CallManager SNMP Service

■ CM services: Cisco CallManager, Cisco TFTP, Cisco CTIManager, Cisco Extension Mobility

■ CTI services: Cisco CallManager Attendant Console Server, Cisco IP Manager Assistant, Cisco WebDialer Web Service

■ CDR services: Cisco SOAP, including CDRonDemand Service, Cisco CAR Scheduler, Cisco CAR Web Service

■ Security services: Cisco CTL Provider, Cisco Certificate Proxy Function

■ Directory Services: Cisco DirSync

■ Voice Quality Reporter Services: Cisco Extended Functions Service Activation

To activate or deactivate feature services for a server, follow these steps in the Cisco Unified Serviceability web interface:

Step 1 Go to Tools > Service Activation.

Step 2 Select the server where you want to activate or deactivate a service.

Step 3 Check or uncheck the check box for each service you want to modify, and save the changes.

Step 4 Use the Control Center to verify that the service has been started (Tools > Control Center - Feature Services).

Figure 5-9 illustrates the Service Activation configuration page in CUCM. The Related Links drop-down menus in the upper-right portion of the CUCM web pages hyperlink to different areas of CUCM configuration. Learning how to leverage the related links can increase the speed in which you can provision services in CUCM.

Control Center

The Control Center for feature services is used to start, stop, or restart services. It is also used to verify the current status and the activation status of feature services per server in the cluster.

Figure 5-9 Service Activation

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Figure 5-10 illustrates the process of viewing a service status and runtime. The figure also shows the process of selecting the radio button related to a particular service so that the service can be started, stopped, restarted, or refreshed.

Global Server Settings

Two types of settings parameters can be changed in CUCM globally across a server or globally across the cluster: enterprise parameters and service parameters.

Enterprise Parameters

Enterprise parameters are used to define cluster-wide system settings, and they apply to all devices and services in the cluster. After installation, enterprise parameter default values should be verified and modified if required before deploying endpoints. Some enterprise parameters will specify initial values of device defaults.

CAUTION Only change enterprise parameters if you are fully aware of the impact of your modifications or if instructed to do so by Cisco Technical Assistance Center (TAC).

Figure 5-10 Control Center

Start, stop, restart, refresh selected service

Activation status Current status

Service start time and up time

Figure 5-10 Control Center

Start, stop, restart, refresh selected service

Service start time and up time

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Select service to start, stop, or restart

You can modify many enterprise parameters. Table 5-3 displays some frequently modified enterprise parameters.

Table 5-3 Enterprise Parameters

Parameter

Description

Default Value

Auto Registration Phone Protocol

Specifies the protocol that auto-registered phones should boot with during initialization

SCCP

Enable Dependency Records

Determines whether to display dependency records

False

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Table 5-3 Enterprise Parameters (Continued)

Parameter

Description

Default Value

CCMUser Parameters

Display or hide certain user-configurable settings from the CCMUser web page

Not applicable

Phone URL Parameters

URLs for IP phone authentication, Directory button, Services button, and so on

Hostnames rather than IP addresses

User Search Limit

Specifies the maximum number of users to be retrieved from a search in the Corporate Directory feature on the phone

64

Dependency records are a feature of CUCM that enable an administrator to view configuration database records that reference the currently displayed record. Dependency record reports can be run by using the Related Links drop-down menu in most configuration pages throughout CUCM Administration. Dependency record reports search the database and return links to all configuration items that include the configuration detail in question. Dependency record reports are useful when CUCM will not allow a configuration element to be deleted because it is in use somewhere in the system but should no longer be in use. Because dependency records could cause a CPU spike in the server platform, it is not recommended that they be run during high-usage periods.

To modify enterprise parameters, follow these steps in the CUCM Administration web interface:

Step 1 Navigate to System > Enterprise Parameters.

Step 2 Change the enterprise parameter values as desired and save the changes.

NOTE To obtain additional information about specific enterprise parameters, click the ? symbol in the upper-right corner of the screen. The same help system is available by clicking the hyperlink of the enterprise parameter name.

Figure 5-11 shows the procedure to hide configuration elements from the CCMUser configuration pages. A business might not want end users to be able to change the Call

Forward All options of their phone in the CCMUser configuration pages, but the option exists in the page by default. Using the enterprise parameter options shown in Figure 5-11, the administrator can choose to remove the hyperlink to Call Forward All in the CCMUser section of the Enterprise Parameters Configuration page. All default settings appear on the right side of the Enterprise Parameter Configurations page.

Figure 5-11 Enterprise Parameter Configuration

2. Save the changes

Figure 5-11 Enterprise Parameter Configuration

2. Save the changes

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1. Select the new setting

Default setting

1. Select the new setting

Default setting

When you are removing DNS reliance, all hostnames within enterprise URL parameters have to be changed to IP addresses. Phone URL parameters change the website that the phone launches when the settings, services, or directories buttons are clicked on the Cisco IP Phone. The phone URL parameters are part of the enterprise parameters. Figure 5-12 shows the configuration of the phone URL parameters.

Figure 5-12 Phone URL Parameters

Figure 5-12 Phone URL Parameters

Service Parameters

Service parameters are used to define settings for a specific service (for example, the call-processing CallManager service). They can be configured separately for each server in the cluster. After installation (or activation of feature services), service parameter default values should be verified and modified if required, before deploying endpoints. The most important service parameters for the CallManager service are as follows:

■ T302 timer: The T.303 interdigit timeout specifies the interdigit timeout value used to route calls when there are multiple possible matches in the database. Multiple possible matches is a condition that will exist when variable-length numbers (international) or overlapping dial plans are being analyzed by CUCM. Reducing the default T.302 value will accelerate the call-routing decision of CUCM when users dial international phone numbers or a phone number that overlaps with another. The default T.302 timer is 15,000-ms (15 seconds). A value of 15 seconds is too long for most environments. Best practice is to reconfigure this timer to a value of 5000 ms (5 seconds). An example of an overlapping dial plan is extension 1500 and extension 15001. CUCM would not know whether it was done receiving digits if the digits of 1500 were received. The user might dial another 1, which would direct the call to a different extension. In this situation, CUCM waits for the T.302 timer to expire and then extends the call to extension 1500.

■ CDR and CMR: CDRs are the basis for call reporting, accounting, and billing. The service parameters are used to enable CDRs and CMRs. CMRs report QoS information related to the phone call (lost packets, average jitter, maximum jitter, and so forth).

■ Cisco Unified Extension Mobility maximum login time: After expiration of this timer, a user is logged out of Cisco Unified Extension Mobility.

■ Cisco Unified Attendant Console username: Specifies the application username that is used by the Cisco Unified Attendant Console application when logging in to the CUCM Computer Telephony Integration (CTI) interface.

By default, not all service parameters display. To see the complete list of service parameters, click the Advanced button. The Change B-Channel Maintenance Status service parameter is an example of a CallManager service parameter that does not show by default. Table 5-4 includes some frequently modified service parameters. Hundreds of service parameters are available to CUCM, many of which you will never encounter. The best way to find one of the parameters listed in Table 5-4 is to use the Find function of your web browser to locate the option on the page.

Table 5-4 Service Parameter Examples

Parameter

Description

Default Value

CDR Enabled Flag

This parameter determines whether CDRs are generated.

False

Station Keepalive Interval

This parameter designates the interval between keepalive messages sent from Cisco IP Phones to the primary CUCM.

30 seconds

T302 Timer

This parameter specifies an interdigit timer for sending the setup acknowledgment message. When this timer expires, CUCM routes the dialed digits.

15 seconds

Automated Alternate Routing Enable

This parameter determines whether to use automated alternate routing when the system does not have enough bandwidth.

False

Change B-Channel Maintenance Status (click Advanced button first)

This parameter allows CUCM to change individual B channel maintenance status for PRI and CAS interfaces in real time for troubleshooting.

No default

To modify service parameters, follow these steps in the CUCM Administration web interface:

Step 1 Navigate to System > Service Parameters.

Step 2 Select the server and the service for which you want to change service parameters.

Step 3 Change the service parameter values as desired and save the changes. Step 4 Click Save.

Steps 2 through 4 are illustrated in Figures 5-13 and 5-14.

Figure 5-13 Service Parameters: Server and Service Selection

Figure 5-13 Service Parameters: Server and Service Selection

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Figure 5-14 Service Parameters: Configuration

2. Save the changes

Optional: Click Advanced to show hidden service parameters

Figure 5-14 Service Parameters: Configuration

2. Save the changes

Optional: Click Advanced to show hidden service parameters

1. Select the new setting

Default setting

1. Select the new setting

Default setting

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