Cisco Unified IP Phone 7941G, 7941G-GE, 7942G, 7961G, 7961G-GE, and 7962G Administration Guide for Cisco Unified Communications Manager 9.0 (SCCP and SIP)
Model Information, Status, and Statistics
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Model Information, Status, and Statistics

Model Information, Status, and Statistics

Model Information, Status, and Statistics Overview

This chapter describes how to use the following menus on the Cisco Unified IP Phone 7941G, 7941G-GE, 7942, 7961G-GE, and 7962G to view model information, status messages, and network statistics for the phone:

  • Model Information screen: Displays hardware and software information about the phone. For more information, see Display Model Information Screen.
  • Status menu: Provides access to screens that display the status messages, network statistics, firmware versions, and Expansion Module information. For more information, see Status Menu.
  • Call Statistics screen: Displays counters and statistics for the current call. For more information, see Call Statistics Screen.

You can use the information on these screens to monitor the operation of a phone and to assist with troubleshooting.

You can also obtain much of this information, and obtain other related information, remotely through the phone’s web page. For more information, see Remote Monitoring.

For more information about troubleshooting the Cisco Unified IP Phone 7941G, 7941G-GE, 7942, 7961G-GE, and 7962G, see Troubleshooting and Maintenance.

Display Model Information Screen

Procedure
    Step 1   To display the Model Information screen, press the Settings button and then select Model Information.
    Step 2   To exit the Model Information screen, press Exit.

    Model Information Settings

    Table 1 Model Information Settings

    Option

    Description

    To Change

    Model Number

    Model number of the phone.

    Display only. Cannot configure.

    MAC Address

    MAC address of the phone.

    Display only. Cannot configure.

    Load File

    Identifier of the factory-installed load running on the phone.

    Display only. Cannot configure.

    Boot Load ID

    Identifier of the factory-installed load running on the phone.

    Display only. Cannot configure.

    Serial Number

    Serial number of the phone.

    Display only. Cannot configure.

    MIC

    Indicates whether a manufacturing installed certificate is present on the phone.

    For more information about how to manage the MIC for your phone, see the "Using the Certificate Authority Proxy Function" chapter in Cisco Unified Communications Manager Security Guide.

    LSC

    Indicates whether a locally significant certificate is present on the phone.

    For more information about how to manage the LSC for your phone, see the "Using the Certificate Authority Proxy Function" chapter in Cisco Unified Communications Manager Security Guide.

    Call Control Protocol

    Indicates the call processing protocol used by the phone.

    For more information, see Cisco Unified IP Phones and Different Protocols.

    Status Menu

    The Status menu includes theses options, which provide information about the phone and its operation:

    • Status Messages: Displays the Status Messages screen, which shows a log of important system messages.
    • Network Statistics: Displays the Network Statistics screen, which shows Ethernet traffic statistics.
    • Firmware Versions: Displays the Firmware Versions screen, which shows information about the firmware running on the phone.
    • Expansion Modules: Displays the Expansion Modules screen, which shows information about the Cisco Unified IP Phone Expansion Module, if connected to the phone.

    Display Status Menu

    Procedure
      Step 1   Press Apps.
      Step 2   Select Admin Settings > Status Menu.

      Status Messages Screen

      The Status Messages screen displays the 10 most recent status messages that the phone has generated. You can access this screen at any time, even if the phone has not finished starting up. Status Messages describes the status messages that might appear. This table also includes actions you can take to address errors.

      Display Status Messages Screen

      To display the Status Messages screen, follow these steps:

      Procedure
        Step 1   Press Settings.
        Step 2   Select Status.
        Step 3   Select Status Messages.
        Step 4   To remove current status messages, press Clear.
        Step 5   To exit the Status Messages screen, press Exit.

        Status Messages

        Table 2 Status Messages on the Cisco Unified IP Phone

        Message

        Description

        Possible Explanation and Action

        BootP server used

        The phone obtained its IP address from a BootP server rather than a DHCP server.

        None. This message is informational only.

        CFG file not found

        The name-based and default configuration file was not found on the TFTP Server.

        The Cisco Unified Communications Manager creates a configuration file for the phone with the phone is added to the database. If the phone has not been added to the Cisco Unified Communications Manager database, the TFTP server generates a CFG File Not Found response.

        • Phone is not registered with Cisco Unified Communications Manager. You must manually add the phone to Cisco Unified Communications Manager if you are not allowing phones to auto-register. See Cisco Unified Communications Manager Administration Phone Addition for details.
        • If you are using DHCP, verify that the DHCP server is pointing to the correct TFTP server.
        • If you are using static IP addresses, check configuration of the TFTP server. See Network Configuration Menu for details on assigning a TFTP server.

        CFG TFTP Size Error

        The configuration file is too large for file system on the phone.

        Power cycle the phone.

        Checksum Error

        Downloaded software file is corrupted.

        Obtain a new copy of the phone firmware and place it in the TFTPPath directory. You should only copy files into this directory when the TFTP server software is shut down, otherwise the files may be corrupted.

        CTL and ITL installed

        The CTL and ITL files are installed on the phone.

        None. This message is informational only. Neither the CTL file nor the ITL file was installed previously.

        For more information about the CTL file, see Cisco Unified Communications Manager Security Guide.

        CTL installed

        The CTL file is installed in the phone.

        None. This message is informational only. The CTL file was not installed previously.

        For more information about the CTL file, see Cisco Unified Communications Manager Security Guide.

        DHCP timeout

        DHCP server did not respond.

        • Network is busy: The errors should resolve themselves when the network load reduces.
        • No network connectivity between the DHCP server and the phone. Verify the network connections.
        • DHCP server is down: Check configuration of DHCP server.
        • Errors persist: Consider assigning a static IP address. See Network Configuration Menu for details on assigning a static IP address.

        Dialplan Parsing Error

        (SIP Phones only)

        The phone could not properly parse the dialplan XML file.

        Problem with the TFTP downloaded dialplan XML file.

        Disabled

        802.1X Authentication is disabled on the phone.

        You can enable 802.1X using the Settings > Security Configuration > 802.1X Authentication option on the phone. For more information, see 802.1X Authentication and Status.

        DNS timeout

        DNS server did not respond.

        • Network is busy: The errors should resolve themselves when the network load reduces.
        • No network connectivity between the DNS server and the phone. Verify the network connections.
        • DNS server is down: Check configuration of DNS server.

        DNS unknown host

        DNS could not resolve the name of the TFTP server or Cisco Unified Communications Manager.

        • Verify that the host names of the TFTP server or Cisco Unified Communications Manager are configured properly in DNS.
        • Consider using IP addresses rather than host names.

        Duplicate IP

        Another device is using the IP address assigned to the phone.

        • If the phone has a static IP address, verify that you have not assigned a duplicate IP address. See Network Configuration Menu section for details.
        • If you are using DHCP, check the DHCP server configuration.

        Erasing CTL and ITL files

        Erasing CTL or ITL files.

        None. This message is informational only.

        For more information about the CTL or ITL files, see Cisco Unified Communications Manager Security Guide.

        Error update locale

        One or more localization files could not be found in the TFTPPath directory or were not valid. The locale was not changed.

        From Cisco Unified Operating System Administration, check that the following files are located within subdirectories in the TFTP File Management:

        • Located in subdirectory with same name as network locale:
          • tones.xml
        • Located in subdirectory with same name as user locale:
          • glyphs.xml
          • dictionary.xml
          • kate.xml

        Failed

        The phone attempted an 802.1X transaction but authentication failed.

        Authentication typically fails for one of the following reasons:

        • No shared secret is configured in the phone or authentication server.
        • The shared secret configured in the phone and the authentication server do not match.
        • Phone has not been configured in the authentication server.

        File auth error

        An error occurred when the phone tried to validate the signature of a signed file. This message includes the name of the file that failed.

        • The file is corrupted. If the file is a phone configuration file, delete the phone from the Cisco Unified Communications Manager database using Cisco Unified Communications Manager Administration. Then add the phone back to the Cisco Unified Communications Manager database using Cisco Unified Communications Manager Administration.
        • There is a problem with the CTL file and the key for the server from which files are obtained is bad. In this case, run the CTL client and update the CTL file, making sure that the proper TFTP servers are included in this file.

        File not found

        The phone cannot locate, on the TFTP server, the phone load file that is specified in the phone configuration file.

        From Cisco Unified Operating System Administration, make sure that the phone load file is on the TFTP server, and that the entry in the configuration file is correct.

        IP address released

        The phone has been configured to release its IP address.

        The phone remains idle until it is power cycled or you reset the DHCP address. See Network Configuration Menu for details.

        ITL installed

        The ITL file is installed in the phone.

        None. This message is informational only. The ITL file was not installed previously.

        For more information about the ITL file, see Cisco Unified Communications Manager Security Guide.

        Load Auth Failed

        The phone could not load a configuration file.

        Check that:

        • A good version of the configuration file exists on the applicable server.
        • The phone load file being downloaded has not been altered or renamed.
        • The phone load type is compatible; for example, you cannot place a DEV load configuration file on a REL-signed phone.

        Load ID incorrect

        Load ID of the software file is of the wrong type.

        Check the load ID assigned to the phone (from Cisco Unified Communications Manager, choose Device > Phone). Verify that the load ID is entered correctly.

        Load rejected HC

        The application that was downloaded is not compatible with the phone’s hardware.

        Occurs if you were attempting to install a version of software on this phone that did not support hardware changes on this newer phone.

        Check the load ID assigned to the phone (from Cisco Unified Communications Manager, choose Device > Phone). Enter the load displayed on the phone. See Firmware Version Screen to verify the phone setting.

        Load Server is invalid

        Indicates an invalid TFTP server IP address or name in the Load Server option.

        The Load Server setting is not valid. The Load Server specifies a TFTP server IP address or name from which the phone firmware can be retrieved for upgrades on the phones.

        Check the Load Server entry (from Cisco Unified Communications Manager Administration, choose Device > Phone).

        No default router

        DHCP or static configuration did not specify a default router.

        If the phone has a static IP address, verify that the default router has been configured. See Network Configuration Menu for details.

        If you are using DHCP, the DHCP server has not provided a default router. Check the DHCP server configuration.

        No DNS server IP

        A name was specified but DHCP or static IP configuration did not specify a DNS server address.

        If the phone has a static IP address, verify that the DNS server has been configured. See Network Configuration Menu for details.

        If you are using DHCP, the DHCP server has not provided a DNS server. Check the DHCP server configuration.

        No Trust List installed

        Certificate Trust List (CTL) file or Identity Trust List (ITL) file is not installed in the phone.

        Occurs if the CTL file is not configured on the Cisco Unified Communications Manager and the Cisco Unified Communications Manager does not support security by default.

        For more information about the CTL file or ITL file, see Cisco Unified Communications Manager Security Guide.

        Programming Error

        The phone failed during programming.

        Attempt to resolve this error by power cycling the phone. If the problem persists, contact Cisco technical support for additional assistance.

        Successful: MD5

        The phone attempted an 802.1X transaction and authentication achieved.

        The phone achieved 802.1X authentication.

        TFTP access error

        TFTP server is pointing to a directory that does not exist.

        If you are using DHCP, verify that the DHCP server is pointing to the correct TFTP server.

        If you are using static IP addresses, check configuration of TFTP server. See Network Configuration Menu for details on assigning a TFTP server.

        TFTP error

        The phone does not recognize an error code provided by the TFTP server.

        Contact the Cisco TAC.

        TFTP file not found

        The requested load file (.bin) was not found in the TFTPPath directory.

        Check the load ID assigned to the phone (from Cisco Unified Communications Manager, choose Device > Phone). Verify that the TFTPPath directory contains a .bin file with this load ID as the name.

        TFTP timeout

        TFTP server did not respond.

        Network is busy: The errors should resolve themselves when the network load reduces.

        No network connectivity between the TFTP server and the phone. Verify the network connections.

        TFTP server is down: Check configuration of TFTP server.

        Timed Out

        Supplicant attempted 802.1X transaction but timed out to due the absence of an authenticator.

        Authentication typically times out if 802.1X is not configured on the switch.

        Trust List update failed

        Updating CTL and ITL files failed.

        Phone has CTL and ITL files installed and it failed to update the new CTL and ITL files.

        Possible reasons for failure:

        • Network failure.
        • TFTP server was down.
        • The new security token used to sign CTL file and the TFTP certificate used to sign ITL file are introduced, but are not available in the current CTL and ITL files in the phone.
        • Internal phone failure.

        Possible solutions:

        • Check the network connectivity.
        • Check if the TFTP server is active and functioning normally.
        • If the TVS server is supported on Cisco Unified Communications Manager, check if the TVS server is active and functioning normally.
        • Verify if the security token and the TFTP server are valid.
        • Manually delete the CTL and ITL files if all the above solutions fail, and reset the phone.

        Trust List updated

        The CTL file, the ITL file, or both files are updated.

        None. This message is informational only.

        For more information about the Trust List, see Cisco Unified Communications Manager Security Guide.

        No Trust List installed

        The CTL file or the ITL file is not installed in the phone.

        The Trust List is not configured on the Cisco Unified Communications Manager, which does not support security by default.

        For more information about the Trust List, see Cisco Unified Communications Manager Security Guide.

        Version error

        The name of the phone load file is incorrect.

        Make sure that the phone load file has the correct name.

        XmlDefault corresponding to the phone device name

        Name of the configuration file.

        None. This is an informational message indicating the name of the configuration file for the phone.

        Network Statistics Screen

        The Network Statistics screen displays information about the phone and network performance. Network Statistics Fields describes the information that appears in this screen.

        Display Network Statistics Screen

        To display the Network Statistics screen, perform these steps:

        Procedure
          Step 1   Press Applications.
          Step 2   Select Settings.
          Step 3   Select Status.
          Step 4   Select Network Statistics.
          Step 5   To reset the Rx Frames, Tx Frames, and Rx Broadcasts statistics to 0, press Clear.

          Network Statistics Fields

          Table 3 Network Statistics Message Information

          Item

          Description

          Rx Frames

          Number of packets received by the phone

          Tx Frames

          Number of packets sent by the phone

          Rx Broadcasts

          Number of broadcast packets received by the phone

          One of the following values:

          • Initialized
          • TCP-timeout
          • CM-closed-TCP
          • TCP-Bad-ACK
          • CM-reset-TCP
          • CM-aborted-TCP
          • CM-NAKed
          • KeepaliveTO
          • Failback
          • Phone-Keypad
          • Phone-Re-IP
          • Reset-Reset
          • Reset-Restart
          • Phone-Reg-Rej
          • Load Rejected HC
          • CM-ICMP-Unreach
          • Phone-Abort

          Cause of the last reset of the phone

          Elapsed Time

          Amount of time that has elapsed since the phone last rebooted

          Port 1

          Link state and connection of the PC port (for example, Auto 100 Mb Full-Duplex means that the PC port is in a link-up state and has auto-negotiated a full-duplex, 100-Mbps connection)

          Port 2

          Link state and connection of the Network port

          IPv4

          Information on the DHCP status. This includes the following states:

          • CDP BOUND
          • CDP INIT
          • DHCP BOUND
          • DHCP DISABLED
          • DHCP INIT
          • DHCP INVALID
          • DHCP REBINDING
          • DHCP REBOOT
          • DHCP RENEWING
          • DHCP REQUESTING
          • DHCP RESYNC
          • DHCP UNRECOGNIZED
          • DHCP WAITING COLDBOOT TIMEOUT
          • SET DHCP COLDBOOT
          • SET DHCP DISABLED
          • DISABLED DUPLICATE IP
          • SET DHCP FAST

          IPv6

          Information on the DHCPv6 status. This includes the following states:

          • DHCP6 BOUND;
          • DHCP6 DISABLED
          • DHCP6 RENEW
          • DHCP6 REBIND
          • DHCP6 INIT
          • DHCP6 SOLICIT
          • DHCP6 REQUEST
          • DHCP6 RELEASING
          • DHCP6 RELEASED
          • DHCP6 DISABLING
          • DHCP6 DECLINING
          • DHCP6 DECLINED
          • DHCP6 INFOREQ
          • DHCP6 INFOREQ DONE
          • DHCP6 INVALID
          • DHCP6 DECLINED DUPLICATE IP
          • DHCP6 WAITING COLDBOOT TIMEOUT
          • DHCP6 TIMEOUT USING RESTORED VAL
          • DHCP6 TIMEOUT. CANNOT RESTORE
          • STACK TURNED OFF

          Firmware Version Screen

          The Firmware Version screen displays information about the firmware version that is running on the phone. Firmware Version Items describes the information that displays on this screen.

          Display Firmware Version Screen

          To display the Firmware Version screen, follow these steps:

          Procedure
            Step 1   Press Settings.
            Step 2   Select Status.
            Step 3   Select Firmware Version.
            Step 4   To exit the Firmware Version screen, press Exit.

            Firmware Version Items

            Table 4 Firmware Version Information

            Item

            Description

            Load File

            Load file running on the phone

            App Load ID

            JAR file running on the phone

            JVM Load ID

            Java Virtual Machine (JVM) running on the phone

            OS Load ID

            Operating system running on the phone

            Boot Load ID

            Ffactory-installed load running on the phone

            Expansion Module 1

            Expansion Module 2

            Load running on the Expansion Modules, if connected to a SIP or SCCP phone

            DSP Load ID

            Digital signal processor (DSP) software version used

            Expansion Module Status Screen

            The Expansion Module Status screen displays information about each Cisco Unified IP Phone Expansion Module that is connected to the phone.

            Expansion Module Status Fields explains the information that is displayed on this screen for each connected expansion module. You can use this information to troubleshoot the expansion module, if necessary. In the Expansion Module Stats screen, a statistic preceded by "A" is for the first expansion module. A statistic preceded by "B" is for the second expansion module.

            Display Expansion Module Status Screen

            To display the Expansion Module Status screen, follow these steps:

            Procedure
              Step 1   Press Settings.
              Step 2   Select Status.
              Step 3   Select Expansion Module.
              Step 4   To exit the Expansion Module screen, press Exit.

              Expansion Module Status Fields

              Table 5 Expansion Module Statistics

              Item

              Description

              Link State

              Overall expansion module status

              RX Discarded Bytes

              Number of bytes discarded due to errors

              RX Length Err

              Number of packets discarded due to improper length

              RX Checksum Err

              Number of packets discarded due to invalid checksum information

              RX Invalid Message

              Number of packets that have been discarded because a message was invalid or unsupported

              TX Retransmit

              Number of packets that have been retransmitted to the expansion module

              TX Buffer Full

              Number of packets discarded because the expansion module was not able to accept new messages

              Call Statistics Screen

              You can access the Call Statistics screen on the phone to display counters, statistics, and voice-quality metrics in the following ways:

              • During call: You can view the call information by rapidly pressing the ? button twice.
              • After the call: You can view the call information captured during the last call by displaying the Call Statistics screen.

                Note


                You can also remotely view the call statistics information by using a web browser to access the Streaming Statistics web page. This web page contains additional RTCP statistics not available on the phone. For more information about remote monitoring, see Remote Monitoring


              A single call can have multiple voice streams, but data is captured for only the last voice stream. A voice stream is a packet stream between two endpoints. If one endpoint is put on hold, the voice stream stops even though the call is still connected. When the call resumes, a new voice packet stream begins, and the new call data overwrites the former call data.

              Display Call Statistics Screen

              To display the Call Statistics screen for information about the last voice stream, follow these steps:

              Procedure
                Step 1   Press Settings.
                Step 2   Select Status.
                Step 3   Select Call Statistics.

                Call Statistics Fields

                The following table describes the items displayed on the Call Statistics screen:

                Table 6 Call Statistics Items

                Item

                Description

                Rcvr Codec

                Type of voice stream received (RTP streaming audio from codec): G.729, G.728/iLBC, G.711 u-law, G.711 A-law, or Lin16k.

                Sender Codec

                Type of voice stream transmitted (RTP streaming audio from codec): G.729, G.728/iLBC, G.711 u-law, G.711 A-law, or Lin16k.

                Rcvr Size

                Size of voice packets, in milliseconds, in the receiving voice stream (RTP streaming audio).

                Sender Size

                Size of voice packets, in milliseconds, in the transmitting voice stream.

                Rcvr Packets

                Number of RTP voice packets received since voice stream was opened.

                Note   

                This number is not necessarily identical to the number of RTP voice packets received since the call began because the call might have been placed on hold.

                Sender Packets

                Number of RTP voice packets transmitted since voice stream was opened.

                Note   

                This number is not necessarily identical to the number of RTP voice packets transmitted since the call began because the call might have been placed on hold.

                Avg Jitter

                Estimated average RTP packet jitter (the dynamic delay that a packet encounters when going through the network) observed since the receiving voice stream was opened.

                Max Jitter

                Maximum jitter observed since the receiving voice stream was opened.

                Rcvr Discarded

                Number of RTP packets in the receiving voice stream that have been discarded.

                Note   

                The phone discards payload type 19 comfort noise packets that are generated by Cisco Gateways, which increment this counter.

                Rcvr Lost Packets

                Missing RTP packets (lost in transit).

                Voice Quality Metrics

                MOS LQK

                Score that is an objective estimate of the mean opinion score (MOS) for listening quality (LQK) that rates from 5 (excellent) to 1 (bad). This score is based on audible concealment events due to frame loss in the preceding 8-second interval of the voice stream. For more information, see Voice Quality Monitoring.

                Note   

                The MOS LQK score can vary based on the type of codec that the Cisco Unified IP Phone uses.

                Avg MOS LQK

                Average MOS LQK score observed for the entire voice stream.

                Min MOS LQK

                Lowest MOS LQK score observed from start of the voice stream.

                Max MOS LQK

                Baseline or highest MOS LQK score observed from start of the voice stream.

                These codecs provide the following maximum MOS LQK score under normal conditions with no frame loss:

                • G.711 gives 4.5
                • G.722 gives 4.5
                • G.728/iLBC gives 3.9
                • G.729 A/AB gives 3.8

                MOS LQK Version

                Version of the Cisco proprietary algorithm used to calculate MOS LQK scores.

                Cumulative Conceal Ratio

                Total number of concealment frames divided by total number of speech frames received from start of the voice stream.

                Interval Conceal Ratio

                Ratio of concealment frames to speech frames in preceding 3-second interval of active speech. If using voice activity detection (VAD), a longer interval might be required to accumulate 3 seconds of active speech.

                Max Conceal Ratio

                Highest interval concealment ratio from start of the voice stream.

                Conceal Secs

                Number of seconds that have concealment events (lost frames) from the start of the voice stream. This includes severely concealed seconds.

                Severely Conceal Secs

                Number of seconds that have more than 5 percent concealment events (lost frames) from the start of the voice stream.

                Latency

                (see note)

                Estimate of the network latency, expressed in milliseconds. Represents a running average of the round-trip delay, measured when RTCP receiver report blocks are received.

                Network Protocol

                Identifies the current Network Protocol.


                Note


                When the RTP Control Protocol is disabled, no data generates for this field and thus displays as 0.


                Test Tone

                The Cisco Unified IP Phone supports a test tone, which allows you to troubleshoot echo on a call as well as to test low volume levels.

                To use a test tone, you must:

                • Enable the tone generator
                • Create a test tone

                Enable Tone Generator

                To enable the tone generator, follow these steps:

                Procedure
                  Step 1   Verify that the phone is unlocked.

                  When options are inaccessible for modification, a locked padlock icon appears on the configuration menus. When options are unlocked and accessible for modification, an unlocked padlock icon appears on these menus.

                  To unlock or lock options on the Settings menu, press **# on the phone keypad. This action either locks or unlocks the options, depending on the previous state.

                  Note   

                  If a Settings Menu password has been provisioned, SIP phones present an "Enter password" prompt after you enter **#.

                  Make sure to lock options after you have made your changes.

                  Caution   

                  Do not press **#** to unlock options and then immediately press **#** again to lock options. The phone will interpret this sequence as **#**, which will reset the phone. To lock options after unlocking them, wait at least 10 seconds before you press **# again.

                  Step 2   While offhook, press Help twice to invoke the Call Statistics screen, or press Settings > Status > Call Statistics to invoke the Call Statistics screen.
                  Step 3   Look for the Tone softkey.

                  When the Tone softkey is visible, the softkey remains enabled for as long as this Cisco Unified IP phone is registered with Cisco Unified Communications Manager.

                  Step 4   If the Tone softkey is present, proceed to Create Test Tone.
                  Step 5   If the Tone softkey is not present, exit the Call Statistics screen and enter the Setting Menu.
                  Step 6   Press **3 on the phone keypad to enable (toggle) the Tone softkey.
                  Note   

                  If you press **# **3 consecutively, with no pause, you will inadvertently reset the phone because of the **#** sequence.

                  Step 7   While offhook, press the Help button twice to invoke the Call Statistics screen, or press Settings > Status > Call Statistics to invoke the Call Statistics screen.
                  Step 8   Verify that the Tone softkey is present.

                  When the Tone softkey is visible, the softkey remains enabled for as long as this Cisco Unified IP Phone is registered with Cisco Unified Communications Manager.


                  Create Test Tone


                  Note


                  When measuring echo, make sure you first set the input and output levels to 0 dB gain/attenuation on the trunk. This is set for the gateway (in Cisco Unified Communications Manager for MGCP) or under IOS CLI for H.323 or SIP.


                  To create a test tone, follow these steps:

                  Procedure
                    Step 1   Place a call.
                    Step 2   After the call is established, press Help twice, or press Settings > Status > Call Statistics.

                    The Call Statistics screen and Tone softkey should appear.

                    Step 3   Press Tone.

                    The phone generates a 1004 Hz tone at -15 dBm.

                    • For a good network connection, the tone sounds at the call destination only.
                    • For a bad network connection, the phone generating the tone may receive echo from the destination phone.
                    Step 4   To stop the tone, end the call.

                    For information on interpreting the results of test tone for volume and echo, see Echo Analysis for Voice over IP.