Cisco Systems 8945, 8941 manual Monitoring the Voice Quality of Calls, Procedure

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Chapter

Monitoring the Voice Quality of Calls

Procedure

Step 1 While powering up the phone, press and hold #.

Step 2 When the light on the mute button and handset light strip turns off and all other lights (line button, headset button, speakerphone button and select button) stay green, press 123456789*0# in sequence.

When you press 1, the lights on the line buttons turn red. The light on the select button flash when a button is pressed.

If you press the buttons out of sequence, the lights on the line button, headset button, speakerphone button, and select button turn green. You will need to start over and press 123456789*0# in sequence again.

After you press these buttons, the phone goes through the factory reset process.

Do not power down the phone until it completes the factory reset process, and the main screen appears.

Monitoring the Voice Quality of Calls

To measure the voice quality of calls that are sent and received within the network, Cisco Unified IP Phones use these statistical metrics that are based on concealment events. The DSP plays concealment frames to mask frame loss in the voice packet stream.

•Concealment Ratio metrics—Show the ratio of concealment frames over total speech frames. An interval conceal ratio is calculated every 3 seconds.

•Concealed Second metrics—Show the number of seconds in which the DSP plays concealment frames due to lost frames. A severely “concealed second” is a second in which the DSP plays more than five percent concealment frames.

•Mean Opinion Score (MOS) for Listening Quality (LQK) Voice Metrics—Uses a numeric score to estimate the relative voice-listening quality. The Cisco Unified IP Phones calculate the MOS LQK based audible-concealment events due to a frame loss in the preceding 8 seconds and includes weighting factors such as codec type and frame size.

MOS LQK scores are produced by a Cisco-proprietary algorithm, the Cisco Voice Transmission Quality (CVTQ) index. Depending on the MOS LQK version number, these scores may comply with the International Telecommunications Union (ITU) standard P.564. (This standard defines evaluation methods and performance accuracy targets that predict listening quality scores based on observation of actual network impairment.)

Note Concealment ratio and concealment seconds are primary measurements based on frame loss. A Conceal Ratio of zero indicates that the IP network is delivering frames and packets on time with no loss.

You can access voice quality metrics from the Cisco Unified IP Phone by using the Call Statistics screen (see the “Call Statistics Screen” section on page 7-8) or remotely by using Streaming Statistics (see the Monitoring the Cisco Unified IP Phone Remotely chapter).

 

 

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

 

 

 

 

 

 

OL-20851-01

 

 

9-13

 

 

 

 

 

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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 Audience OverviewOrganization Chapter DescriptionRelated Documentation Cisco Unified Communications Manager AdministrationCisco Unified IP Phone 8900 Series Cisco Unified Communications Manager Business EditionCisco Product Security Overview Document ConventionsConvention Description Boldface fontImportant 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?Authentication on Cisco Unified IP Phones section Dynamic Host Configuration Protocol chapterCDP DhcpSIP See the LLDP-MED and Cisco Discovery ProtocolNologieswhitepaper0900aecd804cd46d.shtml Chapter in the Cisco Unified Communications Communications Manager Security GuideManager System Guide Related TopicsRelated Topic Feature OverviewConfiguring Telephony Features Providing Users with Feature Information Understanding Security Features for Cisco Unified IP PhonesCommunications Manager Refer to the Troubleshooting Guide for Cisco UnifiedTopic Reference Feature Description Overview of Supported Security FeaturesSecurity Profiles section on page 1-13for more information Access section onUnderstanding Security Profiles Configuration Menu section onIdentifying Encrypted Phone Calls Unified IP Phones section on page 1-16for more informationEstablishing and Identifying Secure Audio Conference Calls Results of Action Feature UsedInitiator’s Phone Overview Supporting 802.1X Authentication on Cisco Unified IP PhonesSecurity Restrictions Configuring Cisco Unified IP Phones in Cisco Unified CM Purpose For More Information Cisco Communications Manager Communications Manager Administration GuideCommunications Manager Administration Guide, Cisco Unified Communications Manager Communications Manager Administration Guide, EndTask Purpose For More Information See the Providing Power to the Cisco Unified IP Phone Installing Cisco Unified IP PhonesSee the Installing the Cisco Unified IP Phone section See the Footstand section onGuide 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 Type Guidelines Power GuidelinesPower Outage Obtaining Additional Information about Power Understanding Phone Configuration FilesUnderstanding the Phone Startup Process Resolving Startup Problems,Purpose Related Topics Adding Phones to the Cisco Unified CM DatabaseRefer to the Cisco Unified Communications Manager Adding Phones with Auto-Registration Adding Phones to the Cisco Unified CM DatabaseRequires MAC Method Address? TapsAdding 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 BeginNetwork and Access Ports, Handset, Speakerphone, Headset, Cisco Unified Communications Manager ConfigurationNetwork and Access Ports Headset HandsetSpeakerphone Audio Quality Subjective to the User See the Network and Access Ports section on Installing the Cisco Unified IP PhoneSee the Headset section on page 3-3for supported See the Adding Phones to the Cisco Unified CMCisco Unified IP Phone 8941 and 8945 Cable Connections Footstand Reducing Power Consumption on the PhoneChapter Footstand Higher Viewing Angle Hold Mute Speaker Verifying the Phone Startup ProcessLower Viewing Angle Before You Begin Configuring Startup Network SettingsConfiguring Security on the Cisco Unified IP Phone Procedure Configuration Menus on the Cisco Unified IP Phone Configuring Settings on the Cisco Unified IP PhoneUnlocking and Locking Options, Editing Values, Displaying a Configuration MenuSelect Administrator Settings Editing Values Network Setup Menu, IPv4 Setup Menu Options,Unlocking and Locking Options Select Network Setup MenuOption Description To Change Device Phone Phone ConfigurationPC Vlan IPv4 Setup Menu Options Related Topics 802.1X Authentication and Status Security Configuration MenuDevice Phone Phone Configuration Trust List MenuSettings Security Config Choose Applications AdministratorAuthentication Device Authentication Settings Security SetupOL-20851-01 Configuring Features, Templates, Services, and Users Set Builtin Bridge Enable to On Feature Description Configuration ReferenceChoose System Service Parameter and select Common Phone Profile Configuration System Enterprise PhoneConfiguration Device Device Settings Features and Services Guide, Call Display Features and Services Guide, Cisco CallAdministration Guide, Directory Number Forward Maximum Hop Count service parameterServices Guide, Monitoring and Recording Services Guide, Call Park and Directed CallUnderstanding Directory Numbers ParkNumbers System Guide, Understanding DirectoryServices Guide Unified Communications Manager FeaturesServices Guide, Cisco Web Dialer CMCServices Guide, Do Not Disturb Services Guide, Immediate DivertAdministration Guide, Hunt Group Feature, see the Cisco Unified CommunicationsManager Features and Services Guide, Hold Services Guide, Intercom Communications Manager FeatureRefer to Cisco Unified Communications Manager System Guide, Cisco Unified IPServices Guide, Music On Hold Features and Services Guide, MaliciousAdministration Guide, Message Waiting Administration Guide, Phone Button Features and Services Guide BargeFeatures and Services Guide, Quality Unified IP Phone 8941 and 8945 User GuideAdministration Guide, Conference Overview of Supported Security FeaturesBridge Configuration Creating Custom Phone Rings sectionServices Administration Guide, Time Period Administration Guide, Cisco Voice-Mail Bridge Configuration chapterPort Configuration Join and Direct Transfer PolicyConfiguring Personal Directory Configuring Corporate and Personal DirectoriesConfiguring Corporate Directories Synchronizer Modifying Phone Button TemplatesFor PAB, enter the following URL DND Configuring Softkey TemplatesSupported as a Setting Up Services Adding Users to Cisco Unified Communications Manager Click Add Selected Giving Users Access to the User Options Web PagesManaging the User Options Web Pages Click Save Selected/Changes Click Device AssociationEnter the appropriate search criteria and click Find 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 ScreenSelect Status Messages Status MenuStatus Messages Screen Network Setup Menu section on page 4-4for Phones with Cisco Unified CM AdministrationAddress. See the Network Setup Menu section Message Description Possible Explanation and ActionMenu 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 ScreenDhcp Reboot Dhcp DisabledDhcp Waiting Coldboot Timeout SET Dhcp ColdbootSelect 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 PhoneChoose Device Phone Disabling and Enabling Web Page AccessDevice Information 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 Verifying Dhcp Settings Cisco Unified IP Phone Resets UnexpectedlyVerifying the Physical Connection Identifying Intermittent Network OutagesVerifying the Voice Vlan Configuration Checking Static IP Address SettingsVerifying that the Phones Have Not Been Intentionally Reset Eliminating DNS or Other Connectivity ErrorsProblem Possible Cause Troubleshooting Cisco Unified IP Phone SecurityChecking Power Connection General Troubleshooting Tips Locking Options section on page 4-3 for details Summary ExplanationHalfduxcollisionexceedthreshold Performing a Basic Reset Resetting or Restoring the Cisco Unified IP PhonePerforming a Factory Reset Operation Performing ExplanationMonitoring 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 SpecificationsNetwork and Access Port Pinouts Cable SpecificationsNetwork Port Connector Pin Number FunctionAccess Port Connector OL-20851-01 Example User Information for these Procedures Basic Phone Administration StepsAdding a User From an External Ldap Directory Adding a User to Cisco Unified CMChoose System Ldap Ldap Directory Click Perform Full Sync NowExample doe Configuring the PhoneProceed to the section Configuring the Phone, page D-3 Appendix Configuring the Phone Appendix Configuring the Phone Click Device Associations Performing Final End User Configuration StepsChoose User Management End User 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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