Cisco CallManager software extends enterprise telephony features and capabilities to packet telephony network devices, such as Cisco IP Phones, media-processing devices, voice over IP (VoIP) gateways, and multimedia applications. Four basic IP phone features do not require configuration in Cisco CallManager and are activated when the user presses a softkey on the IP phone:
Speed Dial and Abbreviated Dial Configuration
Speed dialing provides quick access to frequently dialed numbers. Abbreviated dialing, introduced in Cisco CallManager Release 4.0, extends speed dial functionality by enabling a user to configure up to 99 speed dial entries on a telephone. When a user lifts the handset, the AbbrDial softkey appears. The user can access any speed dial entry by entering the appropriate index, either one or two digits, followed by pressing the AbbrDial softkey.
You can configure speed dials or abbreviated dials in Cisco CallManager Administration. You can access this configuration by clicking Device > Phone, selecting the phone you want to configure, and clicking the Add/Update Speed Dials link in the upper-right corner. A window similar to that shown in Figure 16-1 opens. Configure abbreviated dials just as you would configure speed dials. Users (or administrators) can configure speed dials from the User Options web page (https:///ccmuser).
Figure 16-1. Configuring IP Phone Speed Dials
Auto Answer Configuration
Auto Answer is a feature that causes the speakerphone or headset to go off hook automatically when an incoming call is received. You can program this feature on a telephone-by-telephone basis. To configure Auto Answer, choose the device that you want to enable, and then choose Auto Answer under the Directory Number Settings. A window appears similar to that shown in Figure 16-2. You can choose Auto Answer Off, Auto Answer with Headset, or Auto Answer with Speakerphone. Using the Auto Answer with Headset feature works well for support desks because it delays the call by one second and plays a tone in the ear of the user with the headset to notify them of an incoming call.
Figure 16-2. Configuring Auto Answer
Call Forward and Configurable Call Forward Display Configuration
Call forwarding allows an administrator or user to configure a Cisco IP Phone so that all calls that are destined for that IP phone ring at another telephone or go directly to voice mail. To access the call forwarding options, choose Device > Phone, then select a phone and select a line to display the call forwarding parameters shown in Figure 16-3.
Figure 16-3. Configuring Call Forwarding
The call forwarding options are as follows:
- Voice Mail Check this check box to use settings in the Voice Mail Profile Configuration window. When this check box is checked, Cisco CallManager ignores the settings in the Coverage/Destination and Calling Search Space fields.
- Coverage/Destination This setting indicates the DN to which all calls are forwarded. Use any dialable phone number, including an outside destination.
- Calling Search Space This setting allows you to specify different calling restrictions for call forwarding. Otherwise, the same calling restrictions applied in the IP phone calling search space also apply to call forwarding.
Call Forward Busy, Call Forward No Answer, and Call Forward No Coverage for external and internal calls and the interaction of the No Coverage option is covered in detail in Chapter 12, "Configuring Hunt Groups and Call Coverage."
Part I: Cisco CallManager Fundamentals
Introduction to Cisco Unified Communications and Cisco Unified CallManager
Cisco Unified CallManager Clustering and Deployment Options
Cisco Unified CallManager Installation and Upgrades
Part II: IPT Devices and Users
Cisco IP Phones and Other User Devices
Configuring Cisco Unified CallManager to Support IP Phones
Cisco IP Telephony Users
Cisco Bulk Administration Tool
Part III: IPT Network Integration and Route Plan
Cisco Catalyst Switches
Configuring Cisco Gateways and Trunks
Cisco Unified CallManager Route Plan Basics
Cisco Unified CallManager Advanced Route Plans
Configuring Hunt Groups and Call Coverage
Implementing Telephony Call Restrictions and Control
Implementing Multiple-Site Deployments
Part IV: VoIP Features
Configuring User Features, Part 1
Configuring User Features, Part 2
Configuring Cisco Unified CallManager Attendant Console
Configuring Cisco IP Manager Assistant
Part V: IPT Security
Securing the Windows Operating System
Securing Cisco Unified CallManager Administration
Preventing Toll Fraud
Hardening the IP Phone
Understanding Cryptographic Fundamentals
Understanding the Public Key Infrastructure
Understanding Cisco IP Telephony Authentication and Encryption Fundamentals
Configuring Cisco IP Telephony Authentication and Encryption
Part VI: IP Video
Introducing IP Video Telephony
Configuring Cisco VT Advantage
Part VII: IPT Management
Introducing Database Tools and Cisco Unified CallManager Serviceability
Configuring Alarms and Traces
Using Additional Management and Monitoring Tools
Part VIII: Appendix
Appendix A. Answers to Review Questions