Cisco Unified IP Phone 8961, 9951, and 9971 Administration Guide for Cisco Unified Communications Manager 9.0 (SIP)
Model Information, Status, and Statistics
Downloads: This chapterpdf (PDF - 1.32MB) The complete bookPDF (PDF - 7.22MB) | The complete bookePub (ePub - 2.24MB) | The complete bookMobi (Mobi - 4.21MB) | Feedback

Model Information, Status, and Statistics

Model Information, Status, and Statistics

Model Information, Status, and Statistics Overview

This chapter describes how to view model information, status messages, and network statistics on the Cisco Unified IP Phone 8961, 9951, and 9971.

  • Model Information: Displays hardware and software information about the phone.
  • Status menu: Provides access to screens that display the status messages, network statistics, and statistics for the current call.

You can use the information that displays 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 web page. For more information, see Remote Monitoring.

For more information about troubleshooting the Cisco Unified IP Phone 8961, 9951, and 9971, see Troubleshooting and Maintenance.

Display Model Information Screen

To display the Model Information screen, follow these steps.

Procedure
    Step 1   Press Applications and then select Phone Information.

    If the user is connected to a secure or authenticated server, a corresponding icon (lock or certificate) displays in the Phone Information Screen to the right of the server option. If the user is not connected to a secure or authenticated server, no icon appears.

    The Model Information screen includes the options that are described in Model Information Fields.

    Step 2   To exit the Model Information screen, press Exit.

    Model Information Fields

    The following table describes the Model Information settings.

    Table 1 Model Information settings for the Cisco Unified IP Phone

    Option

    Description

    To change

    Model Number

    Model number of the phone.

    Display only. Cannot configure.

    IP Address

    IP address of the phone.

    Display only. Cannot configure.

    Host name

    Host name of the phone.

    Display only. Cannot configure.

    Active Load

    Version of firmware currently installed on the phone. The user can press Details for more information.

    Display only. Cannot configure.

    Inactive Load

    Inactive Load appears only when a download is in progress. A download icon and a status of "Upgrade in Progress" or "Upgrade Failed" also display. If a user presses Details during an upgrade, the download filename and components are listed.

    A new firmware image can be set to download in advance of a maintenance window. Thus instead of waiting for all of the phones to download the firmware, the system switches more rapidly between resetting an existing load to Inactive status and installing the new load.

    When the download is complete, the icon changes to indicate the completed status; and a check mark displays for a successful download, or an "X" displays for a failed download. If possible, the rest of the loads continue to download.

    Display only. Cannot configure.

    Last Upgrade

    Date of the most recent firmware upgrade.

    Display only. Cannot configure.

    Active Server

    Domain name of the server to which the phone is registered.

    Display only. Cannot configure.

    Stand-by Server

    Domain name of the standby server.

    Display only. Cannot.

    Status Menu

    The Status menu includes the following options, which provide information about the phone and phone operations:

    • Status Messages: Displays the Status Messages screen, which shows a log of important system messages.
    • Ethernet Statistic: Displays the Ethernet Statistics screen, which shows Ethernet traffic statistics.
    • WLAN Statistics: Displays the WLAN Statistics screen, if applicable.
    • Call Statistics: Displays counters and statistics for the current call.
    • Current Access Point: Displays the Current Access Point screen, if applicable.

    Display Status Menu

    To display the Status menu, perform these steps:

    Procedure
      Step 1   To display the Status menu, press Applications.
      Step 2   Select Administrator Settings > Status.
      Step 3   To exit the Status menu, press Exit.

      Status Messages Screen

      The Status Messages screen displays the 30 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 Applications .
        Step 2   Select Administrator Settings.
        Step 3   Select Status.
        Step 4   Select Status Messages. See Status Messages for a description of the status messages.
        Step 5   To remove current status messages, press Clear List.
        Step 6   To exit the Status Messages screen, press Exit.

        Status Messages

        The following table describes the status messages that display on the Status Messages screen of the phone.

        Table 2 Status messages on the Cisco Unified IP Phone

        Message

        Description

        Possible explanation and action

        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 trust list, see Cisco Unified Communications Manager Security Guide.

        CTL Installed

        A certificate trust list (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 the Cisco Unified Communications Manager Security Guide.

        CTL update failed

        The phone could not update the certificate trust list (CTL) file.

        Problem with the CTL file on the TFTP server.

        For more information, see the 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 the Ethernet Setup Menu for details about assigning a static IP address.

        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 the 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 that is assigned to the phone.

        If the phone has a static IP address, verify that you did not assigned a duplicate IP address. See Ethernet Setup Menu for details.

        If you are using DHCP, check the DHCP server configuration.

        Erasing CTL and ITL files

        Erasing CTL or ITL file.

        None. This message is informational only.

        For more information about the CTL and ITL files, see the 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

        File not found <Cfg File>

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

        The configuration file for a phone is created when the phone is added to the Cisco Unified Communications Manager database. If the phone does not exist in 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 autoregister. 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 Ethernet Setup Menu for details about assigning a TFTP server.

        File Not Found <CTLFile.tlv>

        This message displays on the phone when the Cisco Unified Communications Manager cluster is not in secure mode.

        No impact; the phone can still register to Cisco Unified Communications Manager.

        IP address released

        The phone is configured to release the IP address.

        The phone remains idle until it is power cycled or until you reset the DHCP address. See Ethernet Setup 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 rejected HC

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

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

        Check the load ID that is assigned to the phone (from Cisco Unified Communications Manager, choose Device > Phone). Reenter the load that displays on the 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 is configured. See Ethernet Setup 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 is configured. See Ethernet Setup 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

        The CTL file or the ITL file is not installed on 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 the Cisco Unified Communications Manager Security Guide.

        Restart requested by Cisco Unified Communications Manager

        The phone is restarting due to on a request from Cisco Unified Communications Manager.

        Configuration changes were likely made to the phone in Cisco Unified Communications Manager, and Apply was pressed so that the changes take effect.

        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 Ethernet Setup Menu for details about assigning a TFTP server.

        TFTP error

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

        Contact Cisco TAC.

        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

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

        Possible solutions:

        • Check network connectivity.
        • Check whether the TFTP server is active and functioning normally.
        • If the Transactional Vsam Services (TVS) server is supported on Cisco Unified Communications Manager, check whether the TVS server is active and functioning normally.
        • Verify whether the security token and the TFTP server are valid.

        Manually delete the CTL and ITL files if all the preceding solutions fail; 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 the 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.cnf.xml, or .cnf.xml corresponding to the phone device name

        Name of the configuration file.

        None. This message indicates the name of the configuration file for the phone.

        Display Ethernet Statistics Screen

        The Ethernet Statistics screen displays information about the phone and network performance. Ethernet Statistics Information describes the information that appears on this screen.

        To display the Ethernet Statistics screen, follow these steps:

        Procedure
          Step 1   Press Applications .
          Step 2   Select Administrator Settings.
          Step 3   Select Status.
          Step 4   Select Status > Ethernet Statistics. See Ethernet Statistics Information for a description of the Ethernet statistics.
          Step 5   To reset the Rx Frames, Tx Frames, and Rx Broadcasts statistics to 0, press Clear List.
          Step 6   To exit the Ethernet Statistics screen, press Exit.

          Ethernet Statistics Information

          The following table describes the information in the Ethernet Statistics screen.

          Table 3 Ethernet Statistics information for the Cisco Unified IP Phone

          Item

          Description

          Rx Frames

          Number of packets that the phone received.

          Tx Frames

          Number of packets that the phone sent.

          Rx Broadcasts

          Number of broadcast packets that the phone received.

          Restart Cause

          Cause of the last reset of the phone. Specifies 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

          Elapsed Time

          Amount of time that has elapsed since the phone last rebooted.

          Port 1

          Link state and connection of the Network port. For example, Auto 100 Mb Full-Duplex means that the Network port is in a link-up state and has autonegotiated a full-duplex, 100-Mbps connection.

          Port 2

          Link state and connection of the PC port.

          IPv4

          Information about 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

          Display WLAN Statistics Screen

          The WLAN Statistics screen displays statistics about the wireless Cisco Unified IP Phone 9971.

          To display the WLAN Statistics screen, follow these steps:

          Procedure
            Step 1   Press Applications .
            Step 2   Select Administrator Settings.
            Step 3   Select Status.
            Step 4   Select WLAN Statistics. See WLAN Statistics for a description of the WLAN statistics.
            Step 5   To reset the WLAN statistics to 0, press Clear List.
            Step 6   To exit the WLAN Statistics screen, press Exit.

            WLAN Statistics

            The following table describes the WLAN statistics on the phone.

            Table 4 WLAN Statistics on the Cisco Unified IP Phone

            Item

            Description

            Transmit Frames

            Number of packets that the phone transmitted.

            Directed Frames Received

            Number of directed packets that the phone received.

            Multicast Frames Received

            Number of multicast packets that the phone received.

            Broadcast Frames Received

            Number of broadcast packets that the phone received.

            Receive Errors

            Number of packets with errors that the phone received.

            Receive No Buffers

            The phone has no buffers available to receive the packet.

            Frame Checksum (FCS) Errors

            Increments when an FCS error is detected in a received MPDU.

            Duplicate Frames

            Number of duplicate packets received by the phone.

            Fragments Received

            Number of fragmented packets that the phone received.

            Beacons Received

            Number of beacons that the phone received.

            Association Rejected

            Number of AP association rejections that the phone received.

            Association Timeouts

            Number of AP association timeouts that the phone received.

            Authentication Rejects

            Number of authentication rejects that the phone received.

            Authentication Timeouts

            Number of authentication timeouts that the phone received.

            QOS Null Frames

            Number of QOS null packets that the phone received.

            The following WLAN Statistics items display these AP queues: Background (BK), Best Effort (BE), Video (VI), and Voice (VO)

            QOS Data Received

            Number of QOS packets that the phone received.

            Transmit Ok

            Number of packets that the phone transmitted without error.

            Transmit Errors

            Number of packets with errors that the phone transmitted.

            Direct Frames Transmitted

            Number of direct packets that the phone transmitted.

            Multicast Frames Transmitted

            Number of multicast packets that the phone transmitted.

            Broadcast Frames Transmitted

            Number of broadcast packets that the phone transmitted.

            RTS Failed

            A corresponding CTS was not received.

            ACK Failed

            AP did not acknowledge a transmission.

            Retries

            Counter of total retries.

            Multiple Retries

            Transmission of packet required two or more retries before success.

            Retry Failures

            Transmission of packet failed.

            Transmit Timeouts

            Transmission of packet failed due to queue time.

            Success Counter

            Counter of successful transmissions.

            Max Retry Failure

            Counter of successive transmission failures that caused a roaming attempt.

            Display Call Statistics Screen

            You can access the Call Statistics screen on the phone to display counters, statistics, and voice-quality metrics of the most recent call.


            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 that are not available on the phone. For more information about remote monitoring, see Remote Monitoring.


            A single call can use 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.

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

            Procedure
              Step 1   Press Applications.
              Step 2   Select Administrator Settings.
              Step 3   Select Status.
              Step 4   Select Call Statistics. See Call Statistics for a description of the Call Statistics fields.
              Step 5   To exit the Call Statistics screen, press Exit.

              Call Statistics

              The following table describes the items on the Call Statistics screen.

              Table 5 Call Statistics items for the Cisco Unified Phone

              Item

              Description

              Rcvr Codec

              Type of received voice stream (RTP streaming audio from codec): G.729, G.722, G.711 mu-law, G.711 A-law, and iLBC.

              Sender Codec

              Type of transmitted voice stream (RTP streaming audio from codec): G.729, G.722, G.711 mu-law, G.711 A-law, and iLBC.

              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 that were received since voice stream opened.

              Note   

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

              Sender Packets

              Number of RTP voice packets that were transmitted since voice stream opened.

              Note   

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

              Avg Jitter

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

              Max Jitter

              Maximum jitter, in milliseconds, that was observed since the receiving voice stream opened.

              Rcvr Discarded

              Number of RTP packets in the receiving voice stream that were discarded (bad packets, too late, and so on).

              Note   

              The phone discards payload type 19 comfort noise packets that Cisco Gateways generate, because they 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 eight-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 that was observed for the entire voice stream.

              Min MOS LQK

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

              Max MOS LQK

              Baseline or highest MOS LQK score that was 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 yields a score of 4.5.
              • G.729 A /AB yields a score of 3.7.

              MOS LQK Version

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

              Cumulative Conceal Ratio

              Total number of concealment frames divided by total number of speech frames that were 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 (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

              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.

              Display Video Statistics Screen

              You can access the Video Statistics screen on the phone to display counters, statistics of the most recent call.


              Note


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


              A video stream is a frame stream between two endpoints. If one endpoint pauses the video streaming, the video stream stops even though the call is still connected. When the video streaming resumes, a new video frame stream begins, and the new video data overwrites the former video data.

              To display the Video Statistics screen for information about the latest video stream, follow these steps:

              Procedure
                Step 1   Press Applications .
                Step 2   Select Administrator Settings.
                Step 3   Select Call Statistics.
                Step 4   Select Video. See Video Statistics for a description of the Video statistics.
                Step 5   To exit the Video screen, press Exit.

                Video Statistics

                The following table describes the Video Statistics fields.

                Table 6 Video Statistics items for the Cisco Unified Phone

                Item

                Description

                Rcvr Codec

                Type of received video stream (RTP streaming video from codec).

                Sender Codec

                Type of transmitted video stream (RTP streaming video from codec).

                Rcvr Packets

                Number of RTP video packets that were received since the video stream opened.

                Note   

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

                Sender Packets

                Number of RTP video packets that were transmitted since the video stream opened.

                Note   

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

                Avg Jitter

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

                Max Jitter

                Maximum jitter, in milliseconds, observed since the receiving video stream opened.

                Rcvr Discarded

                Number of RTP packets in the receiving video stream that were discarded (bad packets, too late, and so on).

                Rcvr Lost Packets

                Missing RTP video packets (lost in transit).

                Rcvr Size

                Size of video frames, in milliseconds, in the receiving video stream (RTP streaming video).

                Sender Size

                Size of video frames, in milliseconds, in the transmitting video stream.

                Sender Frames

                Number of video frames that by the camera/phone transmitted since the video stream opened.

                Sender Partial Frames

                Number of P-frames that the camera sent since the video stream opened.

                Sender IFrames

                Number of I-frames that the camera sent since the video stream opened.

                Sender Frame Rate

                Rate at which video frames are transmitted (in frames per second).

                Sender Bandwidth

                Bandwidth of the transmitted video steam in kbps (kilo bits per second).

                Sender Resolution

                Resolution of the video stream that the camera transmits.

                VGA(640x480), CIF (352x288), QCIF (176x144)

                Rcvr Frames

                Number of video frames that the phone received since the video stream opened.

                Rcvr Partial Frames

                Number of P-frames that the phone received since the video stream opened.

                Rcvr IFrames

                Number of I-frames that the phone received since the video stream opened.

                Rcvr IFrames Req

                Number of IDR requests that the phone sent to the remote endpoint since the video stream opened.

                Rcvr Frame Rate

                Rate at which video frames are received (in frames per second).

                Rcvr Frame Errors

                Number of errors that the video decoder reported since the video stream opened.

                Rcvr Bandwidth

                Bandwidth of the received video steam in kbps (kilo bits per second).

                Rcvr Resolution

                Resolution of the video stream that the phone received from the remote endpoint. VGA(640x480), CIF (352x288), QCIF (176x144), and so forth.

                Sender Start Time

                Time stamp that indicates when the first RTP packet is sent to the network.

                Rcvr Start Time

                Time stamp that indicates when the first RTP packet is received from the network.

                Latency

                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.

                Display Current Access Point Screen

                The Current Access Point screen displays statistics about the current access point on the wireless Cisco Unified IP Phone 9971. Current Access Point describes the information that appears in this screen.

                To display the Current Access Point screen, follow these steps:

                Procedure
                  Step 1   Press Applications .
                  Step 2   Select Administrator Settings.
                  Step 3   Select Status.
                  Step 4   Select Current Access Point.
                  Step 5   To exit the Current Access Point screen, press Exit.

                  Current Access Point

                  The following table describes the fields in the Current Access Point screen.

                  Table 7 Current Access Point items on the Cisco Unified IP Phone 9971

                  Item

                  Description

                  AP Name

                  Name of the AP, if it is CCX-compliant; otherwise, the MAC address displays here.

                  MAC Address

                  MAC address of the AP.

                  Frequency

                  The latest frequency where this AP was observed.

                  Last RSSI

                  The latest RSSI in which this AP was observed.

                  Beacon Interval

                  Number of time units between beacons. A time unit is 1.024 ms.

                  Capability

                  This field contains a number of subfields that are used to indicate requested or advertised optional capabilities.

                  Basic Rates

                  Data rates that the AP requires and the AP at which the station must be capable of operating.

                  Optional Rates

                  Data rates that the AP supports and the AP that are optional for the station to operate at.

                  Current Channel

                  The latest channel where this AP was observed.

                  dtime Period

                  Every nth beacon is a dtime period. After each DTIM beacon, the AP sends any broadcast or multicast packets that are queued for power-save devices.

                  Country Code

                  A two-digit country code. Country information might not be display if the country information element (IE) is not present in the beacon.

                  Channels

                  A list of supported channels (from the country IE).

                  Power Constraint

                  The amount of power by which the maximum transmit power should be reduced from the regulatory domain limit.

                  Power Limit

                  Maximum transmit power in dBm that is permitted for that channel.

                  Channel Utilization

                  The percentage of time, normalized to 255, in which the AP sensed the medium was busy, as indicated by the physical or virtual carrier sense (CS) mechanism.

                  Station Count

                  Data rates that the AP requires and at which the station must be capable of operating.

                  Admission Capacity

                  An unsigned integer that specifies the remaining amount of medium time that is available through explicit admission control, in units of 32 microseconds per second.

                  If the value is 0, the AP does not support this information element and the capacity is unknown.

                  WMM Supported

                  Support for Wi-Fi multimedia extensions.

                  UAPSD Supported

                  The AP supports Unscheduled Automatic Power Save Delivery. May only be available if WMM is supported. This feature is critical for talk time and for achieving maximum call density on the wireless IP Phone.

                  Proxy ARP

                  CCX-compliant AP supports responding to IP ARP requests on behalf of the associated station. This feature is critical to standby time on the wireless IP Phone.

                  CCX Version

                  If the AP is CCX compliant, this field shows the CCX version.