Cisco Systems 7911G, 7906G manual Eliminating DNS or Other Connectivity Errors

Page 193

Chapter 9 Troubleshooting and Maintenance

Cisco Unified IP Phone Resets Unexpectedly

Eliminating DNS or Other Connectivity Errors

If the phone continues to reset, follow these steps to eliminate DNS or other connectivity errors:

Step 1 Use the Erase softkey to reset phone settings to their default values. See the “Resetting or Restoring the Cisco Unified IP Phone” section on page 9-15for details.

Step 2 Modify DHCP and IP settings.

a.Disable DHCP. See the “Network Configuration Menu” section on page 4-7 for instructions.

b.Assign static IP values to the phone. See the “Network Configuration Menu” section on page 4-7for instructions. Use the same default router setting used for other functioning Cisco Unified IP Phones.

c.Assign TFTP server. See the “Network Configuration Menu” section on page 4-7 for instructions. Use the same TFTP server used for other functioning Cisco Unified IP Phones.

Step 3 On the Cisco Unified CallManager server, verify that the local host files have the correct Cisco Unified CallManager server name mapped to the correct IP address. Refer to Configuring The IP Hosts File on a Windows 2000 CallManager Server, available at this URL: http://www.cisco.com/warp/customer/788/AVVID/cm_hosts_file.html

Step 4 From Cisco Unified CallManager, choose System > Server and verify that the server is referred to by its IP address and not by its DNS name.

Step 5 From Cisco Unified CallManager, choose Device > Phone and verify that you have assigned the correct MAC address to this Cisco Unified IP Phone. For information about determining a MAC address, see the “Determining the MAC Address of a Cisco Unified IP Phone” section on page 2-15.

Step 6 Power cycle the phone.

 

 

Cisco Unified IP Phone 7906G and 7911G Administration Guide for Cisco Unified CallManager

 

 

 

 

 

 

OL-10008-01

 

 

9-11

 

 

 

Page 192 Page 194
Image 193
Page 192 Page 194
Contents Cisco Unified IP Phone 7906G and 7911G Page Copyright 2006 Cisco Systems, Inc. All rights reserved Page N T E N T S Security Restrictions Vii SafetyViii Configuring Features, Templates, Services, and UsersPNG File Requirements for Custom Background Images Symptom The Cisco Unified IP Phone Does Not Register with Supporting International Users B-1 Xii Audience OverviewXiii Xiv OrganizationCisco Unified CallManager Administration Appendix C, Technical SpecificationsRelated Documentation Appendix B, Supporting International UsersCisco.com Obtaining DocumentationXvi Product Documentation DVD Ordering Documentation Documentation FeedbackXvii Xviii Cisco Product Security OverviewFor Emergencies only security-alert@cisco.com Reporting Security Problems in Cisco ProductsXix Cisco Technical Support & Documentation Website Obtaining Technical AssistanceDefinitions of Service Request Severity Submitting a Service RequestXxi Xxii Obtaining Additional Publications and InformationXxiii Convention Description Document ConventionsXxiv Varoitus Tärkeitä Turvallisuusohjeita Waarschuwing Belangrijke VeiligheidsinstructiesXxv Avvertenza Importanti Istruzioni Sulla Sicurezza Warnung Wichtige SicherheitshinweiseXxvi Xxvii Aviso Instruções Importantes DE SegurançaXxviii Varning! Viktiga SäkerhetsanvisningarXxix Xxx GEM Disse AnvisningerXxxi Xxxii An Overview Cisco Unified IP Phone Understanding the Cisco Unified IP Phones 7906G and 7911G Cisco Unified IP Phones 7906G and 7911G What Networking Protocols Are Used? Dhcp Networking Protocol Purpose Usage NotesSrtp UDP What Features are Supported?Related Topics Feature Overview Telephony Features Available for the Phone, Configuring Telephony FeaturesRelated Topic Providing Users with Feature Information Understanding Security Features for Cisco Unified IP PhonesTopic Reference See the Troubleshooting Cisco Unified IP Overview of Supported Security FeaturesSee the Resetting or Restoring Phone Security section onConfiguring Security on the Cisco Unified IP Phone Feature DescriptionSection on page 3-17 for more information Capf Device Configuration Menu section on Identifying Encrypted and Authenticated Phone CallsGarp Security Restrictions Cisco Unified CallManager Database section on OL-10008-01 Task Purpose For More Information Phone Configuration window CallManager database See the Setting Up See the ConfiguringServices section on Softkey TemplatesSee the Adding Users to Installing Cisco Unified IP PhonesCisco Unified CallManag Er section onSee the Installing See the Providing PowerCisco Unified IP Phones 7906G and 7911GConfiguration Menu Startup Network SettingsSecurity on Providing Information to See Appendix aUsers OL-10008-01 Preparing to Install Cisco Unified IP Phone on Your Network OL-10008-01 Vlan Power Outage Providing Power to Cisco Unified IP Phones 7906G and 7911GObtaining Additional Information about Power Power GuidelinesPower Type Guidelines URL Understanding Phone Configuration FilesUnderstanding the Phone Startup Process Vlan Step Description Related TopicsCisco Unified CallMan See the Understanding Phone ConfigurationRequires MAC Method Address? Adding Phones to the Cisco Unified CallManager DatabaseAdding Phones with Auto-Registration Adding Phones with Auto-Registration and Taps MAC Address of a Cisco Unified IP Phone section on Adding Phones with Cisco Unified CallManager AdministrationAdding Phones with BAT Determining the MAC Address of a Cisco Unified IP PhoneOL-10008-01 Before You Begin Setting Up the Cisco Unified IP PhoneNetwork Requirements Handset, Speaker, Installing the Cisco Unified IP Phone,Safety Cisco Unified CallManager ConfigurationSetting Up the Cisco Unified IP Phone Before You Begin Network and Access Ports, Handset, Speaker, Headset, Network and Access PortsHandset Speaker Monitor ModeActivating Group Listen on the Phone HeadsetAudio Quality Subjective to User Connecting a Headset Installing the Cisco Unified IP PhoneProcedure Reference 154887 154389 Cisco Unified IP Phone Model 7906G Cable Connections Cisco Unified IP Phone Model 7911G Cable Connections Mounting the Phone to a Wall ProcedureBefore You Begin Verifying the Phone Startup Process Configuring Startup Network SettingsSettings on the Cisco Unified IP Phone Configuring Security on the Cisco Unified IP PhoneCisco Unified CallManager Administration Guide Related Topic OL-10008-01 Configuring Settings on Cisco Unified IP Phone Displaying a Configuration Menu Unlocking and Locking Options Editing the Values of an Option Setting Overview of Options Configurable from a Phone Category Description Option Network Configuration MenuOption Description To Change Network Configuration MenuOption Description To Change CTL File Screen section on To the CTL File Screen section Vlan ID Option Description To Change Option Description To Change PC Vlan CallManager Configuration Menu Device Configuration MenuState Srst Designation DescriptionTftp URL Http Configuration MenuLocale Configuration Menu Media Configuration Menu UI Configuration MenuSecurity Configuration Menu Ethernet Configuration Menu10 Security Configuration Menu Options Displaying a Configuration Menu, Network Configuration Menu, QoS Configuration MenuNetwork Configuration Configuring Features, Templates Services, and Users Feature Description Configuration Reference Telephony Features Available for the PhoneSystem Guide, Understanding Administration Guide, Feature Call CMC System Guide, Call Pickup FACMcid Administration Guide , Meet-MeMlpp System Guide, Voice MailQRT Button Templates section onAdministration Guide, Time Templates section on See the Configuring SoftkeyConfiguring Personal Directory Configuring Corporate DirectoriesModifying Phone Button Templates Configuring Softkey TemplatesSetting Up Services Adding Users to Cisco Unified CallManager Specifying Options that Appear on the User Options Web Pages OL-10008-01 Creating Custom Phone Rings Customizing Cisco Unified IP PhoneRing CiscoIPPhoneRingList RingList.xml File Format RequirementsPCM File Requirements for Custom Ring Types Configuring a Custom Phone RingList.xml File Format Requirements Creating Custom Background ImagesList.xml Example PNG File Requirements for Custom Background Images Configuring a Custom Background ImageOL-10008-01 OL-10008-01 A P T E R Security Configuration Menu CTL File Screen CTL File Information Trust List Screen Model Information Screen CTL Status MenuMIC LSCPress the Applications Menu button Status Messages ScreenStatus Network Configuration Menu section CallManager Administration section onMessage Description Possible Explanation and Action Adding Phones with Cisco UnifiedAddress Configuration Menu section onMenu section on page 4-7 section for Address. See the Network ConfigurationPhone. See the Firmware Versions Screen Network Configuration Menu section onSection on page 7-19 to verify the phone Section on page 4-7 section for details See the Network Configuration MenuOn page 4-7for details on assigning a Network Statistics Screen Select Network Statistics PC port is in a link up state and has auto-negotiated Firmware Versions Screen OL-10008-01 Monitoring the Cisco Unified IP Phone Remotely Device Logs, Streaming Statistics, Accessing the Web Page for a PhoneDisabling Web Page Access Device Information Monitoring the Cisco Unified IP Phone Remotely UDI Network Configuration Description Description Description Description Network Statistics Ethernet Information Area Items OL-10008-01 Device Logs Streaming Statistics Streaming Statistics OL-10008-01 Troubleshooting and Maintenance Resolving Startup Problems Troubleshooting and Maintenance Resolving Startup Problems Identifying Error Messages Verifying Tftp Server Settings Verifying DNS Settings Creating a New Configuration File Cisco Unified IP Phone Resets Unexpectedly Verifying Physical Connection Verifying Dhcp SettingsIdentifying Intermittent Network Outages Verifying Voice Vlan Configuration Checking Static IP Address SettingsEliminating DNS or Other Connectivity Errors Problem Possible Cause General Troubleshooting TipsSummary Explanation Halfduxcollisionexceedthreshold Unlocking and Locking Options section on page 4-3 forPerforming a Basic Reset, Performing a Factory Reset, Performing a Basic ResetOperation Performing Explanation Locking Options section on Performing a Factory ResetUnlocking and Locking Options Section on page 4-3 . The pressUsing the Quality Report Tool Where to Go for More Troubleshooting Information Cleaning the Cisco Unified IP PhoneHow Users Obtain Support for the Cisco Unified IP Phone Providing Information to UsersHow Users Get Copies of Cisco Unified IP Phone Manuals How Users Subscribe to Services and Configure Phone FeaturesCisco Unified CallManager section on How Users Access a Voice Messaging SystemHow Users Configure Personal Directory Entries Supporting International Users Appendix B Supporting International Users Specification Value or Range Technical SpecificationsNetwork and Access Port Pinouts Cable SpecificationsNetwork Port Connector Pin Number FunctionRD+ Access Port ConnectorOL-10008-01 IN-1 NumericsIN-2 IN-3 IN-4 IN-5 IN-6 IN-7 IN-8 IN-9 IN-10 IN-11 IN-12 Wall mounting Web Access Enabled 4-22webPage USA
Related manuals
Manual 20 pages 35.53 Kb Manual 5 pages 42.55 Kb

7906G, 7911G specifications

The Cisco Systems 7911G is a versatile IP phone designed to enhance communication in enterprise environments. Targeting workers in various organizational settings, this model is known for its reliability, ease of use, and robust features that cater to both basic and advanced telephony requirements.

One of the key features of the Cisco 7911G is its support for Voice over IP (VoIP) technology. Using this technology allows for the transmission of voice signals over the internet rather than through traditional telephone lines. This not only reduces telephony costs but also offers enhanced functionality that integrates seamlessly with existing communication systems.

The phone is equipped with a monochrome graphical display that provides users with clear visibility of their call status, directory information, and menu options. With a resolution of 128x64 pixels, the screen is large enough to offer important information without overwhelming the user. This simplicity makes it an ideal choice for users who require straightforward functionality without the complexity of advanced features.

Ergonomically designed, the Cisco 7911G features a comfortable keypad with dedicated buttons for frequently used functions such as mute, hold, and transfer. It supports multiple lines, providing users with the ability to manage multiple calls simultaneously. Additionally, it offers programmable line keys that can be customized for speed dial or as soft keys for quick access to features.

The device supports Power over Ethernet (PoE), which allows the phone to receive power through the network cable rather than needing a separate power source. This feature not only simplifies installation but also enhances mobility within the workspace, as it reduces cable clutter.

Another significant characteristic of the Cisco 7911G is its compatibility with Cisco Unified Communications Manager, which ensures centralized management of telephony systems. It also supports a range of audio codecs that help in delivering high-quality audio during calls, reducing latency and improving overall communication quality.

Security is also a focus with the Cisco 7911G, as it features a secure access feature that includes Transport Layer Security (TLS) and Secure Real-Time Transport Protocol (SRTP) for encrypted voice communications. This ensures that sensitive conversations are protected from eavesdropping.

Overall, the Cisco Systems 7911G is a reliable, feature-rich IP phone that provides an excellent solution for organizations looking to upgrade their communication systems. Its combination of user-friendly design, powerful integrations, and security features makes it a cornerstone in the suite of Cisco telecommunications solutions.
Top Page Image Contents