Cisco Systems 8945, 8941 manual Halfduxcollisionexceedthreshold

Page 135

Chapter

General Troubleshooting Tips

Table 9-2

Cisco Unified IP Phone Troubleshooting (continued)

 

 

 

Summary

 

Explanation

 

 

Sound sample mismatch between the

The RxSize and the TxSize statistics show the size of the voice packets that are

phone and another device.

being used in a conversation between this Cisco Unified IP phone and the other

 

 

device. The values of these statistics should match.

 

 

See the “Call Statistics Screen” section on page 7-8for information about

 

 

displaying these statistics.

 

 

Gaps in voice calls.

Check the AvgJtr and the MaxJtr statistics. A large variance between these

 

 

statistics might indicate a problem with jitter on the network or periodic high

 

 

rates of network activity.

 

 

See the “Call Statistics Screen” section on page 7-8for information about

 

 

displaying these statistics.

 

 

Loopback condition.

A loopback condition can occur when the following conditions are met:

 

 

• The SW Port Configuration option in the Network Setup menu on the

 

 

phone is set to 10 Half

 

 

(10-BaseT / half duplex)

 

 

• The phone receives power from an external power supply

 

 

• The phone is powered down (the power supply is disconnected)

 

 

In this case, the switch port on the phone can become disabled and the

 

 

following message will appear in the switch console log:

 

 

HALF_DUX_COLLISION_EXCEED_THRESHOLD

 

 

To resolve this problem, re-enable the port from the switch.

 

 

 

One-way audio.

 

When at least one person in a call does not receive audio, IP connectivity

 

 

between phones is not established. Check the configurations in routers and

 

 

switches to ensure that IP connectivity is properly configured.

 

 

Phone call cannot be established

The phone does not have a DHCP IP address, is unable to register to Cisco

 

 

Unified Communications Manager, and shows a Configuring IP or Registering

 

 

message.

 

 

Verify the following:

 

 

1. The Ethernet cable is attached.

 

 

2. The Cisco CallManager service is running on the Cisco Unified

 

 

Communications Manager server.

 

 

3. Both phones are registered to the same Cisco Unified Communications

 

 

Manager.

 

 

4. Audio server debug and capture logs are enabled for both phones. If

 

 

needed, enable Java debug.

 

 

 

 

 

Cisco Unified IP Phone 8941 and 8945 Administration Guide for Cisco Unified Communications Manager 8.5 (SCCP and SIP)

 

 

 

 

 

 

OL-20851-01

 

 

9-11

 

 

 

 

 

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Contents Text Part Number OL-20851-01 Americas HeadquartersPage N T E N T S Power Outage 802.1X Authentication and Status Troubleshooting and Maintenance Cable Specifications C-2 Network and Access Port Pinouts C-2 Viii Chapter Description OverviewAudience OrganizationCisco Unified Communications Manager Business Edition Cisco Unified Communications Manager AdministrationRelated Documentation Cisco Unified IP Phone 8900 SeriesBoldface font Document ConventionsCisco Product Security Overview Convention DescriptionImportant Safety Instructions An Overview of the Cisco Unified IP Phone Understanding the Cisco Unified IP Phones 8941 Features on the Cisco Unified IP Phone 8941 Networking Protocol Purpose Usage Notes What Networking Protocols are Used?Dhcp Dynamic Host Configuration Protocol chapterAuthentication on Cisco Unified IP Phones section CDPSee the LLDP-MED and Cisco Discovery Protocol Nologieswhitepaper0900aecd804cd46d.shtmlSIP Related Topics Communications Manager Security GuideChapter in the Cisco Unified Communications Manager System GuideFeature Overview Configuring Telephony FeaturesRelated Topic Providing Users with Feature Information Understanding Security Features for Cisco Unified IP PhonesRefer to the Troubleshooting Guide for Cisco Unified Topic ReferenceCommunications Manager Feature Description Overview of Supported Security FeaturesSecurity Profiles section on page 1-13for more information Access section onUnified IP Phones section on page 1-16for more information Configuration Menu section onUnderstanding Security Profiles Identifying Encrypted Phone CallsEstablishing and Identifying Secure Audio Conference Calls Feature Used Initiator’s PhoneResults of Action Overview Supporting 802.1X Authentication on Cisco Unified IP PhonesSecurity Restrictions Configuring Cisco Unified IP Phones in Cisco Unified CM Purpose For More Information Communications Manager Administration Guide Communications Manager Administration Guide, CiscoCisco Communications Manager Communications Manager Administration Guide, End Task Purpose For More InformationUnified Communications Manager See the Footstand section on Installing Cisco Unified IP PhonesSee the Providing Power to the Cisco Unified IP Phone See the Installing the Cisco Unified IP Phone sectionGuide for Cisco Unified Communications Manager Refer to Cisco Unified IP Phone 8941 and 8945 UserTerminology Differences User Guide Administration and System GuidesA P T E R Related Topic Understanding the Phone Startup Process, Network Setup Menu, Providing Power to the Cisco Unified IP PhonePower Guidelines Power OutagePower Type Guidelines Obtaining Additional Information about Power Understanding Phone Configuration FilesAdding Phones to the Cisco Unified CM Database Resolving Startup Problems,Understanding the Phone Startup Process Purpose Related TopicsRefer to the Cisco Unified Communications Manager Taps Adding Phones to the Cisco Unified CM DatabaseAdding Phones with Auto-Registration Requires MAC Method Address?Adding Phones with Auto-Registration and Taps Adding Phones with BAT Adding Phones with Cisco Unified CM AdministrationDetermining the MAC Address for a Cisco Unified IP Phone OL-20851-01 Network Requirements Before You BeginCisco Unified Communications Manager Configuration Network and Access PortsNetwork and Access Ports, Handset, Speakerphone, Headset, Handset SpeakerphoneHeadset Audio Quality Subjective to the User See the Adding Phones to the Cisco Unified CM Installing the Cisco Unified IP PhoneSee the Network and Access Ports section on See the Headset section on page 3-3for supportedCisco Unified IP Phone 8941 and 8945 Cable Connections Footstand Reducing Power Consumption on the PhoneChapter Footstand Higher Viewing Angle Verifying the Phone Startup Process Lower Viewing AngleHold Mute Speaker Configuring Startup Network Settings Configuring Security on the Cisco Unified IP PhoneBefore You Begin Procedure Configuration Menus on the Cisco Unified IP Phone Configuring Settings on the Cisco Unified IP PhoneDisplaying a Configuration Menu Select Administrator SettingsUnlocking and Locking Options, Editing Values, Network Setup Menu, IPv4 Setup Menu Options, Unlocking and Locking OptionsEditing Values Network Setup Menu Option Description To ChangeSelect Configuration PC VlanDevice Phone Phone IPv4 Setup Menu Options Related Topics Trust List Menu Security Configuration Menu802.1X Authentication and Status Device Phone Phone ConfigurationSettings Security Setup Choose Applications AdministratorSettings Security Config Authentication Device AuthenticationOL-20851-01 Configuring Features, Templates, Services, and Users Feature Description Configuration Reference Choose System Service Parameter and selectSet Builtin Bridge Enable to On Configuration System Enterprise Phone Configuration Device Device SettingsCommon Phone Profile Forward Maximum Hop Count service parameter Features and Services Guide, Cisco CallFeatures and Services Guide, Call Display Administration Guide, Directory NumberPark Services Guide, Call Park and Directed CallServices Guide, Monitoring and Recording Understanding Directory NumbersNumbers System Guide, Understanding DirectoryCMC Unified Communications Manager FeaturesServices Guide Services Guide, Cisco Web DialerServices Guide, Do Not Disturb Services Guide, Immediate DivertFeature, see the Cisco Unified Communications Manager Features and Services Guide, HoldAdministration Guide, Hunt Group Manager System Guide, Cisco Unified IP Communications Manager FeatureServices Guide, Intercom Refer to Cisco Unified CommunicationsFeatures and Services Guide, Malicious Administration Guide, Message WaitingServices Guide, Music On Hold Unified IP Phone 8941 and 8945 User Guide Features and Services Guide BargeAdministration Guide, Phone Button Features and Services Guide, QualityCreating Custom Phone Rings section Overview of Supported Security FeaturesAdministration Guide, Conference Bridge ConfigurationServices Administration Guide, Time Period Join and Direct Transfer Policy Bridge Configuration chapterAdministration Guide, Cisco Voice-Mail Port ConfigurationConfiguring Corporate and Personal Directories Configuring Corporate DirectoriesConfiguring Personal Directory Synchronizer Modifying Phone Button TemplatesFor PAB, enter the following URL Configuring Softkey Templates Supported as aDND Setting Up Services Adding Users to Cisco Unified Communications Manager Giving Users Access to the User Options Web Pages Managing the User Options Web PagesClick Add Selected Click Device Association Enter the appropriate search criteria and click FindClick Save Selected/Changes Chapter Managing the User Options Web Pages Chapter Managing the User Options Web Pages Customizing the Cisco Unified IP Phone Customizing and Modifying Configuration FilesDistinctiveRingList File Format Requirements Creating Custom Phone RingsPCM File Requirements for Custom Ring Types Configuring a Custom Phone RingConfiguring the Idle Display Field Description OL-20851-01 Model Information Screen, Status Menu, Model Information ScreenStatus Menu Status Messages ScreenSelect Status Messages Message Description Possible Explanation and Action Phones with Cisco Unified CM AdministrationNetwork Setup Menu section on page 4-4for Address. See the Network Setup Menu sectionMenu section on page 4-4for details Network Setup Menu section onSetup Menu section on page 4-4for details on Select Status Network Statistics Network Statistics ScreenSET Dhcp Coldboot Dhcp DisabledDhcp Reboot Dhcp Waiting Coldboot TimeoutSelect Call Statistics Call Statistics ScreenMOS LQK Voice Quality MetricsSelect Administrator Settings Select Security Setup Security ConfigurationMonitoring the Cisco Unified IP Phone Remotely Http//IPaddress Accessing the Web Page for a PhoneDisabling and Enabling Web Page Access Device InformationChoose Device Phone UDI Network SetupDescription Description Network Statistics Lldp Streaming Statistics Device LogsStream Streaming Statistics Configuring Settings on the Cisco Unified IP Phone chapter Resolving Startup Problems Troubleshooting and MaintenanceChapter Resolving Startup Problems Identifying Error Messages Choose Tools Control Center Feature Services Verifying DNS SettingsSymptom Cisco Unified IP Phone Unable to Obtain IP Address Identifying Intermittent Network Outages Cisco Unified IP Phone Resets UnexpectedlyVerifying Dhcp Settings Verifying the Physical ConnectionEliminating DNS or Other Connectivity Errors Checking Static IP Address SettingsVerifying the Voice Vlan Configuration Verifying that the Phones Have Not Been Intentionally ResetTroubleshooting Cisco Unified IP Phone Security Checking Power ConnectionProblem Possible Cause General Troubleshooting Tips Locking Options section on page 4-3 for details Summary ExplanationHalfduxcollisionexceedthreshold Operation Performing Explanation Resetting or Restoring the Cisco Unified IP PhonePerforming a Basic Reset Performing a Factory ResetMonitoring the Voice Quality of Calls Metric Change Condition Troubleshooting TipsCleaning the Cisco Unified IP Phone Where to Go for More Troubleshooting InformationChapter Cleaning the Cisco Unified IP Phone Providing Information to Users Via a Website How Users Access a Voice Messaging System Installing the Synchronizer How Users Configure Personal Directory EntriesPrograms Cisco Systems TabSync Configuring the SynchronizerSupport for International Call Logging Installing the Cisco Unified CM Locale InstallerOL-20851-01 Specification Value or Range Physical and Operating Environment SpecificationsPin Number Function Cable SpecificationsNetwork and Access Port Pinouts Network Port ConnectorAccess Port Connector OL-20851-01 Example User Information for these Procedures Basic Phone Administration StepsClick Perform Full Sync Now Adding a User to Cisco Unified CMAdding a User From an External Ldap Directory Choose System Ldap Ldap DirectoryConfiguring the Phone Proceed to the section Configuring the Phone, page D-3Example doe Appendix Configuring the Phone Appendix Configuring the Phone Performing Final End User Configuration Steps Choose User Management End UserClick Device Associations Sccp SIP Protocol FeaturesAppendix EFT Draft Cisco Confidential Tool Numerics IN-2 IN-3 IN-4 IN-5 LLDP-MEDCast CDP Dhcp Http Rtcp RTP Sccp SIP Srtp TCP Tftp TLS UDP MICIN-7 IN-8 Srst SrtpIN-9 Vlan
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