Cisco Systems 7900 manual Phone Failover and Fallback, Phone Configuration Checklist, 43-31

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Chapter 43 Cisco Unified IP Phones

Phone Failover and Fallback

Phone Failover and Fallback

This section describes how phones fail over and fall back if the Cisco Unified CallManager to which they are registered becomes unreachable. This section also covers conditions that can affect calls that are associated with a phone, such as reset or restart.

Cisco Unified CallManager Fails or Becomes Unreachable

The active Cisco Unified CallManager designation applies to the Cisco Unified CallManager from which the phone receives call-processing services. The active Cisco Unified CallManager usually serves as the primary Cisco Unified CallManager for that phone (unless the primary machine is not available).

If the active Cisco Unified CallManager fails or becomes unreachable, the phone attempts to register with the next available Cisco Unified CallManager in the Cisco Unified CallManager Group that is specified for the device pool to which the phone belongs.

The phone device reregisters with the primary Cisco Unified CallManager as soon as it becomes available after a failure. See the “Maximum Phone Fallback Queue Depth Service Parameter” section on page 43-30for information about phone registration during failover.

Note Phones do not fail over or fall back while a call is in progress.

Phone is Reset

If a call is in progress, the phone does not reset until the call finishes.

Phone Configuration Checklist

Table 43-5provides steps to manually configure an SCCP phone in Cisco Unified CallManager Administration. If you are using autoregistration, Cisco Unified CallManager adds the phone and automatically assigns the directory number.

Table 43-6provides steps to manually configure a SIP phone in Cisco Unified CallManager Administration. If you are using autoregistration, Cisco Unified CallManager adds the phone and automatically assigns the directory number.

Table 43-5

 

Phone Configuration Checklist for SCCP Protocol

 

 

 

 

 

 

 

 

Configuration Steps

Procedures and Related Topics

 

 

 

 

 

Step 1

Gather the following information about the phone:

Phone Search, page 43-27

 

 

Model

 

 

 

 

 

 

MAC address

 

 

 

 

 

 

Physical location of the phone

 

 

 

 

 

 

Cisco Unified CallManager user to associate with the phone

 

 

 

 

 

 

Partition, calling search space, and location information, if

 

 

 

 

 

 

 

used

 

 

 

 

 

 

Number of lines and associated DNs to assign to the phone

 

 

 

 

 

 

 

 

 

Step 2

Add and configure the phone.

Configuring Cisco Unified IP Phones, Cisco

 

 

 

 

Unified CallManager Administration Guide

 

 

 

 

 

 

 

 

 

 

 

Cisco Unified CallManager System Guide

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OL-14153-01

 

 

 

 

43-31

 

 

 

 

 

 

 

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Contents 43-1 Cisco Unified IP PhonesDescription Supported Cisco Unified IP Phones43-2 43-3 43-4 43-5 43-6 LAN43-7 Clients and CTI Ports Cisco SIP IP Phones43-8 43-9 Cisco IP CommunicatorCisco Unified Personal Communicator Cisco TelePresence43-10 Phone Button TemplatesTemplate Description Default Phone Button Templates43-11 43-12 43-13 43-14 Guidelines for Customizing Phone Button Templates Feature Description43-15 43-16 Add Application Softkey Templates43-17 Call State Description Configure Softkey Layout43-18 Sample Softkey Layout 43-19Common Phone Profiles Softkey Template Operation43-20 43-21 Phone FeaturesMethods for Adding Phones User/Phone AddCall Forward Barge and Privacy43-22 Call Pickup Call Park43-23 Onhook Call Transfer Call SelectConference List Direct TransferQuality Report Tool Immediate DivertJoin Malicious Call Identification McidService URL Call Diagnostics and Voice-Quality Metrics43-26 43-27 Phone Administration TipsPhone Association Phone Search43-28 43-29 Messages ButtonDirectories Button Finding All Phones in the Database43-30 Maximum Phone Fallback Queue Depth Service ParameterCisco Unified CallManager User Options Dependency Records43-31 Phone Configuration ChecklistConfiguration Steps Procedures and Related Topics Phone Failover and Fallback43-32 Guide43-33 Related Topics Where to Find More Information43-34 43-35 Additional Cisco Unified CallManager Documentation43-36

7900 specifications

Cisco Systems has long been a pioneering force in the realm of networking and telecommunications, and among its notable offerings is the Cisco 7900 series of IP phones. These devices are designed to deliver high-quality voice communications and are widely used in business environments. The Cisco 7900 series encompasses several models, each tailored to specific user needs, ensuring that organizations can find the right fit for their communication requirements.

One of the standout features of the Cisco 7900 series is its wideband audio technology, which provides crystal-clear voice quality, enhancing the calling experience. The inclusion of high-definition voice capabilities allows users to communicate with greater clarity, making it easier to understand nuances during conversations. This feature is particularly valuable in business settings, where misunderstandings can lead to costly errors.

The Cisco 7900 series also integrates seamlessly with Cisco Unified Communications Manager, allowing for robust call management features and advanced functionalities. Users can enjoy features such as call transfer, conference calling, and voicemail integration, all of which streamline communication efforts. The phones support multiple lines and programmable feature keys, giving users the flexibility to manage their calls efficiently.

In terms of design, the Cisco 7900 series features an intuitive user interface with a large, backlit display for easy navigation. The devices are equipped with various connectivity options, including Ethernet and PoE (Power over Ethernet), enabling straightforward integration into existing network infrastructures without the need for additional power adapters.

Security is another critical aspect of the Cisco 7900 series. The phones support a range of security protocols, including Secure Real-Time Transport Protocol (SRTP) and Transport Layer Security (TLS), ensuring that conversations remain confidential and secure from eavesdropping. This focus on security is essential for businesses that handle sensitive information.

Furthermore, the Cisco 7900 series is designed with compatibility in mind. It supports various unified communications applications, making it a versatile choice for organizations looking to enhance their communication tools. With features like XML applications, users can customize their phone experience to complement their workflow.

In conclusion, the Cisco 7900 series of IP phones stands out as a reliable and feature-rich communication solution. With its emphasis on audio quality, user-friendly design, security, and integration capabilities, it has become a staple in business environments. As organizations continue to prioritize effective communication, the Cisco 7900 series remains a leading choice for facilitating seamless interactions.