Cisco Systems 7970G manual Symptom Cisco Unified IP Phone Unable to Obtain IP Address

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Chapter 9 Troubleshooting and Maintenance

Resolving Startup Problems

•Changing the buttons on a phone button template, or assigning a different phone button template to a phone, may result in directory numbers that are no longer accessible from the phone. The directory numbers are still assigned to the phone in the Cisco Unified CallManager database, but there is no button on the phone with which calls can be answered. These directory numbers should be removed from the phone and deleted if necessary.

Registering the Phone with Cisco Unified CallManager

A Cisco Unified IP Phone can register with a Cisco Unified CallManager server only if the phone has been added to the server or if auto-registration is enabled. Review the information and procedures in the “Adding Phones to the Cisco Unified CallManager Database” section on page 2-13to ensure that the phone has been added to the Cisco Unified CallManager database.

To verify that the phone is in the Cisco Unified CallManager database, choose Device > Find from Cisco Unified CallManager Administration to search for the phone based on its MAC Address. For information about determining a MAC address, see the “Determining the MAC Address of a Cisco Unified IP Phone” section on page 2-20.

If the phone is already in the Cisco Unified CallManager database, its configuration file may be damaged. See the “Creating a New Configuration File” section on page 9-7for assistance.

Symptom: Cisco Unified IP Phone Unable to Obtain IP Address

If a phone is unable to obtain an IP address when it starts up, the phone may be not be on the same network or VLAN as the DHCP server, or the switch port to which the phone is connected may be disabled.

Make sure that the network or VLAN to which the phone is connected has access to the DHCP server, and make sure that the switch port is enabled.

		Cisco Unified IP Phone Administration Guide for Cisco Unified CallManager 5.1 (SIP), Cisco Unified IP Phones

9-8		OL-11524-01
9-8		OL-11524-01

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Contents Cisco Unified IP Phones 7970G/7971G-GE Page Page Page N T E N T S Products Adding Phones with Cisco Unified CallManager Administration ViiDisabling a Headset ViiiCustomizing and Modifying Configuration Files Configuring a Custom Background Image Troubleshooting and Maintenance Monitoring the Voice Quality of Calls XiiXiii Xiv Overview AudienceOrganization XviCisco Unified IP Phones 7970G/7971G-GE Cisco Unified CallManager AdministrationRelated Documentation XviiCisco.com TroubleshootingObtaining Documentation Product Documentation DVDOrdering Documentation Documentation FeedbackCisco Product Security Overview XixReporting Security Problems in Cisco Products For emergencies only security-alert@cisco.comObtaining Technical Assistance Product Alerts and Field NoticesXxi Cisco Technical Support & Documentation Website XxiiDefinitions of Service Request Severity Submitting a Service RequestXxiii Obtaining Additional Publications and Information XxivBoldface font Document ConventionsConvention Description Italic fontItalic screen font XxviVaroitus Tärkeitä Turvallisuusohjeita Waarschuwing Belangrijke VeiligheidsinstructiesXxvii Avvertenza Importanti Istruzioni Sulla Sicurezza Warnung Wichtige SicherheitshinweiseXxviii Aviso Instruções Importantes DE Segurança XxixVarning! Viktiga Säkerhetsanvisningar XxxXxxi GEM Disse Anvisninger XxxiiXxxiii Xxxiv An Overview of the Cisco Unified IP Phone Understanding the Cisco Unified IP Phones 7970G/7971G-GE Cisco Unified IP PhonePage OL-11524-01 Networking Protocol Purpose Usage Notes What Networking Protocols Are Used?Unified CallManager System Guide Refer to the Supporting Authentication on Cisco Unified IPPhones section on page 1-18 for Network Configuration section on Understanding the SIP Protocol Related TopicsFeature Overview Configuring Telephony Features Providing Users with Feature Information Refer to Cisco Unified CallManager Security Understanding Security Features for Cisco Unified IP PhonesTopic Reference GuideTopic Reference Overview of Supported Security Features Feature Description More information, see the Device Configuration Menu Authentication on Cisco Unified IP Phones section onSelect Security Configuration Identifying Encrypted and Authenticated Phone CallsProcedure Understanding Security ProfilesSupporting 802.1X Authentication on Cisco Unified IP Phones Related TopicRequired Network Components OL-11524-01 Security Restrictions OL-11524-01 Task Purpose For More Information CallManager AdministrationCallManager System Guide Refer to Cisco Unified See the Setting Up Services See the Configuring SoftkeyTemplates section on See the Adding Users to Installing Cisco Unified IP PhonesCisco Unified CallManager Page See the Adjusting See the Providing PowerSee the Installing Placement of the CiscoSettingsNetwork Configuration IP Phone 7970 GuideOL-11524-01 A P T E R OL-11524-01 Telephony Features Available for the Phone, VlanProviding Power to the Phone Phone Power Consumption and Display Brightness Power GuidelinesPower Type Guidelines Brightness Power Outage Obtaining Additional Information about PowerUnderstanding Phone Configuration Files Understanding the Phone Startup Process SIP Dial RulesStep Description Related Topics Unified CallManager Security GuideUnderstanding Files,Adding Phones to the Cisco Unified CallManager Database Requires MAC Method Address?Adding Phones with Auto-Registration Adding Phones with Auto-Registration and Taps Adding Phones with BAT MAC Address of a Cisco Unified IP Phone section onUsing Cisco Unified IP Phones with Different Protocols Converting a New Phone from Sccp to SIP See the Configuring Startup Network Settings section onConverting an In-Use Phone from Sccp to SIP Converting an In-Use Phone from SIP to Sccp Deploying a Phone in an Sccp and SIP EnvironmentDetermining the MAC Address of a Cisco Unified IP Phone Setting Up the Cisco Unified IP Phone Before You Begin Cisco Unified CallManager ConfigurationNetwork Requirements Safety Setting Up the Cisco Unified IP Phone Before You Begin Network and Access Ports, Handset, Speakerphone, Headset, Network and Access PortsHandset Speakerphone HeadsetAudio Quality Subjective to the User Http//plantronics.comUsing External Devices with Your Cisco Unified IP Phone See the Providing Power to Installing the Cisco Unified IP PhoneProcedure Reference See the Headset section onSee the Network and Access Ports section on page 3-5 for130055 Adjusting the Placement of the Cisco Unified IP Phone Adjusting Cisco Unified IP Phone Placement on the DesktopSecuring the Phone with a Cable Lock See -2 belowMounting the Phone to the Wall Before You BeginVerifying the Phone Startup Process Parts Used in Wall Mounting the Cisco Unified IP PhoneOL-11524-01 Configuring Startup Network Settings Settings on the Cisco Unified IP PhoneBefore You Begin From the phone, press the Settings Security Configuration OL-11524-01 Configuring Settings on Cisco Unified IP Phone Related Topics Displaying a Configuration Menu Unlocking and Locking Options Editing Values Overview of Options Configurable from a Phone Category DescriptionNetwork Configuration Menu Values section onOption Description To Change Security Configuration Menu section Refer to Cisco Unified CallManagerOption Description To Change Vlan ID Scroll to the Dhcp Address Option Description To Change PC Vlan Device Configuration Menu State CallManager Configuration MenuBlank Unified CallManager Security Guide Designation DescriptionDevice Pool CallManager Security GuideDevice Device Settings SIP Configuration MenuSIP General Configuration Menu, Line Settings Menu, SIP ProfileUsecallmanager Line Settings Menu Call Preferences Menu This option can also be Http Configuration Menu URL Locale Configuration Menu Configuration Menu,UI Configuration Menu NTP Configuration MenuIncoming call on the same line when Administration System Enterprise Media Configuration MenuParameters Enabled or disabled for the phone. If Whose phone has the Recording Tone Receives. The remote party is the party Power Save Configuration Menu Ethernet Configuration Menu Security Configuration MenuResponses. Disabling the phone’s QoS Configuration Menu Network ConfigurationWAN by storing images locally Security Configuration Menu Call Statistics Screen, Streaming Statistics,List Screen section on CTL File Screen section onCisco Unified CallManager Security CTL File Screen See the 802.1X AuthenticationStatus section on Configuration Menu section on Unlocking the CTL FileTrust List Screen 802.1X Authentication and Status Authentication Device Choose Settings SecurityConfiguration Authentication802.1X Authentication Real-Time Status Configuring Features, Templates Services, and Users Telephony Features Available for the Phone Feature Description Configuration ReferenceFeatures and Services Guide Administration GuideSystem Guide, Call Pickup CallManager Features System GuideChanged Information Guide Administration Guide, CallCisco Unified CallManager New Release 5.11, Cisco UnifiedText, on the phone screen DND Features and Services Guide section New and Changed InformationSystem Guide, Music on Administration Guide, MusicServices Guide, Presence CallManager System Guide, CiscoAdministration Guide , Cisco Unified CallManager SystemCreating Custom Phone Rings section onSystem Guide, Time-of-Day Administration Guide, TimeService Application Development Refer to the Cisco Unified IP PhoneConfiguring Corporate Directories and Personal Directories Configuring Corporate Directories Configuring Personal DirectoryConfiguring Softkey Templates Modifying Phone Button TemplatesSetting Up Services Adding Users to Cisco Unified CallManager Managing the User Options Web PagesGiving Users Access to the User Options Web Pages User Management End UserCustomizing the Cisco Unified IP Phone Creating Custom Phone Rings Ringlist.xml File Format Requirements Configuring a Custom Phone Ring PCM File Requirements for Custom Ring TypesCreating Custom Background Images List.xml File Format RequirementsPNG File Requirements for Custom Background Images List.xml ExampleConfiguring a Custom Background Image Configuring Wideband Headset Codec Configuring the Idle Display OL-11524-01 Page Field Description Field Description OL-11524-01 A P T E R Model Information Screen CTLStatus Menu See the Using Cisco Unified IPPhones with Different Protocols Status Messages Screen Select Status MessagesMessage Description Possible Explanation and Action CallManager Administration section onNetwork Configuration Menu section Adding Phones with Cisco UnifiedUnified CallManager Administration Guide Authentication and Status section on Settings Security Configuration802.1X Authentication option on the phone Address. See the Network ConfigurationMessage Description Possible Explanation and Action Network Configuration Menu section on Section on page 7-15 to verify the phone Phone. See the Firmware Versions ScreenDevice Phone See the Network Configuration Menu Section on page 4-7 section for detailsMessage Description Possible Explanation and Action Network Statistics Screen Select Network StatisticsPC port is in a link up state and has auto-negotiated Firmware Versions Screen Select Firmware VersionsCall Statistics Screen Select Call StatisticsMOS LQK Monitoring the Voice Quality of Calls section onOL-11524-01 Monitoring the Cisco Unified IP Phone Remotely Network Statistics, Device Logs, Streaming Statistics, Accessing the Web Page for a PhoneHttp//IPaddress Disabling and Enabling Web Page Access Device Information Choose Device PhoneUDI Network Configuration Network Configuration Description Description Description Network Statistics Ethernet Information Area Items Description Device Logs Streaming Statistics MOS LQK Streaming Statistics Related Topics Page OL-11524-01 Troubleshooting and Maintenance Resolving Startup Problems Troubleshooting and Maintenance Resolving Startup Problems Identifying Error Messages Verifying IP Addressing and Routing Cisco CallManager Serviceability Choose Tools Control CenterCreating a New Configuration File Symptom Cisco Unified IP Phone Unable to Obtain IP Address Verifying Physical Connection Cisco Unified IP Phone Resets UnexpectedlyIdentifying Intermittent Network Outages Checking Static IP Address Settings Verifying Dhcp SettingsVerifying Voice Vlan Configuration Eliminating DNS or Other Connectivity Errors Verifying that the Phones Have Not Been Intentionally ResetChecking Power Connection Problem Possible Cause802.1X Enabled on Phone but Not Authenticating 802.1X Not Enabled General Troubleshooting Tips Summary ExplanationUnlocking and Locking Options section on page 4-4 for See the Call Statistics Screen section on page 7-16 forPerforming a Basic Reset, Performing a Factory Reset, HalfduxcollisionexceedthresholdLocking Options section on Performing a Basic ResetOperation Performing Explanation Unlocking and Locking OptionsPerforming a Factory Reset Using the Quality Report Tool Monitoring the Voice Quality of CallsUsing Voice Quality Metrics Troubleshooting Tips Condition Cleaning the Cisco Unified IP Phone Where to Go for More Troubleshooting InformationWebsite Providing Information to Users Via aHow Users Access the Online Help System on the Phone How Users Obtain Support for the Cisco Unified IP PhoneHow Users Get Copies of Cisco Unified IP Phone Manuals How Users Access a Voice Messaging System Unified CallManager section onHow Users Configure Personal Directory Click Next Configuring the Synchronizer OL-11524-01 P E N D I X B Features Cisco Unified IP PhoneCMC Calling Features Cisco Unified IP Phone 7970G/7971G-GE Development Notes for Release 4.13 or Cisco IP Phone Service ApplicationCisco Ipma User Guide User Guide Cisco CallManager Features and ServicesCisco CallManager Attendant Console Cisco IP Phone Expansion ModuleSupporting International Users Adding Language Overlays to Phone ButtonsInstalling the Cisco Unified CallManager Locale Installer Technical Specifications Specification Value or RangeCable Specifications Network and Access Port PinoutsAccess Port Connector Network Port ConnectorPin Number Function Numerics IN-1IN-2 IN-3 IN-4 IN-5 IN-6 IN-7 IN-8 IN-9 IN-10 IN-11 IN-12 Vlan IN-13IN-14

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