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How do I troubleshoot the inability to activate the Call Back feature on Cisco IP phones?

April 26, 2017activate Cisco feature inability IP phones troubleshoot

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How do I troubleshoot the inability to activate the Call Back feature on Cisco IP phones?

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A. In order to resolve this issue, perform these steps: • Restart the Cisco Extended Functions (CEF) service on all servers. On the CCMAdministrator page, choose Application > Cisco CallManager Serviceability > Tools > Control Center. Check if the CEF is live. If it is not, choose this service and start it. If it indicates that it is live, choose the service and restart it. For more information, refer to Cisco Extended Functions Service Dependency. • Restart these services: • Computer Telephony Integration (CTI) manager service • Cisco Tomcat service • IIS Admin service • If the problem persists, reset the CCMSysUser password with the CCMPWDChanger utility as indicated in Enabling Cisco IP Services.