Cisco Unified IP Phone 7906G and 7911G Administration Guide for Cisco Unified Communications Manager 9.0 (SCCP and SIP)
Remote Monitoring
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Remote Monitoring

Remote Monitoring

Remote Monitoring Overview

Each Cisco Unified IP Phone has a web page from which you can view a variety of information about the phone, including:

  • Device information
  • Network configuration information
  • Network statistics
  • Device logs
  • Streaming statistics

Note


The Cisco Unified IP Phone does not support web access on its IPv6 address.


This chapter describes the information that you can obtain from the phone web page. You can use this information to remotely monitor the operation of a phone and to assist with troubleshooting.

You can also obtain much of this information directly from a phone. For more information, see Model Information, Status, and Statistics.

For more information about troubleshooting the Cisco Unified IP Phone 7906G and 7911G, see Troubleshooting and Maintenance.

Access Web Page for Phone

To access the web page for a Cisco Unified IP Phone, perform the following these steps.


Note


If you cannot access the web page, it may be disabled. See Control Web Page Access for more information.


Procedure
    Step 1   Obtain the IP address of the Cisco Unified IP Phone using one of these methods:
    • Search for the phone in Cisco Unified Communications Manager by choosing Device > Phone. Phones registered with Cisco Unified Communications Manager display the IP address at the top of the Phone Configuration window.
    • On the phone, press the Applications Menu button, choose Network Configuration, and then scroll to the IP Address option.
    Step 2   Open a web browser and enter the following URL, where IP_address is the IP address of the Cisco Unified IP Phone:

    http://IP_address or https://IP_address (depending on the protocol supported by the Cisco Unified IP Phone)


    Phone Web Page Overview

    The web page for Cisco Unified IP Phone includes these hyperlinks:

    • Device Information: Displays device settings and related information for the phone.
    • Network Configuration: Displays network configuration information and information about other phone settings.
    • Network Statistics: Includes the following hyperlinks, which provide information about network traffic:
      • Ethernet Information: Displays information about Ethernet traffic.
      • Access: Displays information about network traffic to and from the PC port on the phone.
      • Network: Displays information about network traffic to and from the network port on the phone.
    • Device Logs: Includes the following hyperlinks, which provide information that you can use for troubleshooting:
      • Console Logs: Includes hyperlinks to individual log files.
      • Core Dumps: Includes hyperlinks to individual dump files.
      • Status Messages: Displays up to the 10 most recent status messages that the phone has generated since it was last powered up.
      • Debug Display: Displays messages that might be useful to the Cisco TAC if you require assistance with troubleshooting.
    • Streaming Statistics: Includes the Stream 1, Stream 2, and Stream 3 hyperlinks, which display a variety of streaming statistics.

    Control Web Page Access

    For security purposes, you may choose to prevent access to the web pages for a phone. If you do so, you will prevent access to the web pages that are described in this chapter and to the User Options web pages of the phone.

    You can enable or disable access to the web pages for an individual phone, a group of phones, or to all phones in the system.

    To enable or disable access to the web pages for all phones on the system, choose System > Enterprise Parameters and select Enabled or Disabled from the Web Access drop-down menu.

    To enable or disable access to the web pages for a group of phones, choose Device > Device Settings > Common Phone Profile to create a new phone profile or to update an existing phone profile, select Enabled or Disabled from the Web Access drop-down menu and select the common phone profile when you configure your phone.

    To enable or disable access to the web pages for a phone, perform these steps from Cisco Unified Communications Manager Administration:

    Procedure
      Step 1   Choose Device > Phone.
      Step 2   Specify the criteria to find the phone and click Find, or click Find to display a list of all phones.
      Step 3   Click the device name to open the Phone Configuration window for the device.
      Step 4   From the Web Access drop-down list box, choose Disable if you want to disable the phone and choose Enabled if you want to enable the phone.
      Step 5   Click Update.
      Note   

      Some features, such as Cisco Quality Report Tool, do not function properly without access to the phone web pages. Disabling web access also affects any serviceability application that relies on web access, such as CiscoWorks.


      Cisco Unified IP Phone and HTTP or HTTPS Protocols

      The Cisco Unified IP Phone can be configured to use:

      • HTTPS protocol only
      • HTTP or HTTPS protocols

      If your Cisco Unified IP Phone is configured to use the HTTP or HTTPS protocols, use http://<IP_address> or https://<IP_address> for phone web access.

      If your Cisco Unified IP Phone is configured to use only HTTPS protocol, use https://<IP_address> for phone web access.

      Device Information Area

      The Device Information area on a phones web page displays device settings and related information for the phone. The following table describes these items.

      To display the Device Information area, access the web page for the phone as described in the Access Web Page for Phone, and then click the Device Information hyperlink.

      Table 1 Device Information Area Items

      Item

      Description

      MAC Address

      Media Access Control (MAC) address of the phone

      Host Name

      Unique, fixed name that is automatically assigned to the phone based on the MAC address

      Phone DN

      Directory number assigned to the phone

      App Load ID

      Identifier of the firmware running on the phone

      Boot Load ID

      Identifier of the factory-installed load running on the phone

      Version

      Version of the firmware running on the phone

      Hardware Revision

      Revision value of the phone hardware

      Serial Number

      Serial number of the phone

      Model Number

      Model number of the phone

      Message Waiting

      Indicates if there is a voice message waiting on any line for this phone

      UDI

      Displays the following Cisco Unique Device Identifier (UDI) information about the phone:

      • Device Type: Indicates hardware type. For example, phone displays for all phone models
      • Device Description: Displays the name of the phone associated with the indicated model type
      • Product Identifier: Specifies the phone model
      • Version Identifier: Represents the hardware version of the phone The Version Identifier field might display blank if using an older model Cisco Unified IP Phone because the hardware does not provide this information.
      • Serial Number: Displays the unique serial number of the phone

      Time

      Time obtained from the Date/Time Group in Cisco Unified Communications Manager to which the phone belongs

      Time Zone

      Timezone obtained from the Date/Time Group in Cisco Unified Communications Manager to which the phone belongs

      Date

      Date obtained from the Date/Time Group in Cisco Unified Communications Manager to which the phone belongs

      Network Configuration Area

      The Network Configuration area on a phone web page displays network configuration information and information about other phone settings. The following table describes these items.

      You can view and set many of these items from the Network Configuration Menu and the Device Configuration Menu on the Cisco Unified IP Phone. For more information, see Features, Templates, Services, and Users.

      To display the Network Configuration area, access the web page for the phone as described in the Access Web Page for Phone, and then click the Network Configuration hyperlink.

      Table 2 Network Configuration Area Items

      Item

      Description

      DHCP Server

      IP address of the Dynamic Host Configuration Protocol (DHCP) server from which the phone obtains its IP address.

      BOOTP Server

      Indicates whether the phone obtains its configuration from a Bootstrap Protocol (BootP) server.

      MAC Address

      Media Access Control (MAC) address of the phone.

      Host Name

      Host name that the DHCP server assigned to the phone.

      Domain Name

      Name of the Domain Name System (DNS) domain in which the phone resides.

      IP Address

      Internet Protocol (IP) address of the phone.

      Subnet Mask

      Subnet mask used by the phone.

      TFTP Server 1

      Primary Trivial File Transfer Protocol (TFTP) server used by the phone.

      Default Router 1–5

      Default router used by the phone (Default Router 1) and optional backup routers (Default Router 2–5).

      DNS Server 1–5

      Primary Domain Name System (DNS) server (DNS Server 1) and optional backup DNS servers (DNS Server 2–5) used by the phone.

      Operational VLAN ID

      Auxiliary Virtual Local Area Network (VLAN) configured on a Cisco Catalyst switch in which the phone is a member.

      Admin. VLAN ID

      Auxiliary VLAN in which the phone is a member.

      Unified CM1–5

      Host names or IP addresses, in prioritized order, of the Cisco Unified Communications Manager servers with which the phone can register. An item can also show the IP address of an SRST router that is capable of providing limited Cisco Unified Communications Manager functionality, if such a router is available.

      For an available server, an item will show the Cisco Unified Communications Manager server IP address and one of the following states:

      • Active: Cisco Unified Communications Manager server from which the phone is currently receiving call-processing services.
      • Standby: Cisco Unified Communications Manager server to which the phone switches if the current server becomes unavailable.
      • Blank: No current connection to this Cisco Unified Communications Manager server.

      An option may also include the Survivable Remote Site Telephony (SRST) designation, which indicates an SRST router capable of providing Cisco Unified Communications Manager functionality with a limited feature set. This router assumes control of call processing if all other Cisco Unified Communications Manager servers become unreachable. The SRST Cisco Unified Communications Manager always appears last in the list of servers, even if it is active. You configure the SRST router address in the Device Pool section in Cisco Unified Communications Manager Configuration window.

      Information URL

      URL of the help text that appears on the phone.

      Directories URL

      URL of the server from which the phone obtains directory information.

      Messages URL

      URL of the server from which the phone obtains message services.

      Services URL

      URL of the server from which the phone obtains Cisco Unified IP Phone services.

      DHCP Enabled

      Indicates whether DHCP is being used by the phone.

      DHCP Address Released

      Indicates the setting of the DHCP Address Released option on the phone’s Network Configuration menu.

      Alternate TFTP

      Indicates whether the phone is using an alternative TFTP server.

      Idle URL

      URL that the phone displays when the phone has not been used for the time specified by Idle URL Time, and no menu is open.

      Idle URL Time

      Number of seconds that the phone has not been used and no menu is open before the XML service specified by Idle URL is activated.

      Proxy Server URL

      URL of proxy server, which makes HTTP requests to non-local host addresses on behalf of the phone HTTP client and provides responses from the non-local host to the phone HTTP client.

      Authentication URL

      URL that the phone uses to validate requests made to the phone web server.

      SW Port Configuration

      Speed and duplex of the switch port, where:

      • A: Auto Negotiate
      • 10H: 10-BaseT/half duplex
      • 10F: 10-BaseT/full duplex
      • 100H: 100-BaseT/half duplex
      • 100F: 100-BaseT/full duplex
      • No Link: No connection to the switch port

      PC Port Configuration (applies to 7911G only)

      Speed and duplex of the switch port, where:

      • A: Auto Negotiate
      • 10H: 10-BaseT/half duplex
      • 10F: 10-BaseT/full duplex
      • 100H: 100-BaseT/half duplex
      • 100F: 100-BaseT/full duplex
      • No Link: No connection to the PC port

      To configure the setting on multiple phones simultaneously, configure Remote Port Configuration in Enterprise Phone Configuration (System > Enterprise Phone Configuration).

      Note   

      If the ports are configured for Remote Port Configuration in Unified CM, the data cannot be changed on the phone.

      TFTP Server 2

      Backup TFTP server that the phone uses if the primary TFTP server is unavailable.

      User Locale

      User locale associated with the phone user. Identifies a set of detailed information to support users, including language, font, date and time formatting, and alphanumeric keyboard text information.

      Network Locale

      Network locale associated with the phone user. Identifies a set of detailed information to support the phone in a specific location, including definitions of the tones and cadences used by the phone.

      User Locale Version

      Version of the user locale loaded on the phone.

      Network Locale Version

      Version of the network locale loaded on the phone.

      PC Port Disabled (applies to 7911G only)

      Indicates whether the PC port on the phone is enabled or disabled.

      Speaker Enabled

      Indicates whether the speakerphone is enabled on the phone.

      Group Listen

      Enables both the handset and speaker to be active at the same time, so that one user can talk into the handset while other users listen over the speaker.

      GARP Enabled

      Indicates whether the phone learns MAC addresses from GARP responses.

      Voice VLAN Enabled (applies to 7911G only)

      Indicates whether the phone allows a device attached to the PC port to access the Voice VLAN.

      Auto Line Select Enabled

      Indicates whether the phone shifts the call focus to incoming calls on all lines.

      DSCP for Call Control

      DSCP IP classification for call control signaling.

      DSCP for Configuration

      DSCP IP classification for any phone configuration transfer.

      DSCP for Services

      DSCP IP classification for phone-based services.

      Security Mode

      Displays the security mode that is set for the phone.

      Web Access Enabled

      Indicates whether web access is enabled (Yes) or disabled (No) for the phone.

      Span to PC Port (applies to 7911G only)

      Indicates whether the phone will forward packets transmitted and received on the network port to the access port.

      PC VLAN (applies to 7911G only)

      VLAN used to identify and remove 802.1P/Q tags from packets sent to the PC.

      CDP: PC Port

      (applies to 7911G only)

      Indicates whether CDP is enabled on the PC port (default is enabled).

      LLDP: PC Port

      Indicates whether Link Layer Discovery Protocol (LLDP) is enabled on the PC port.

      LLDP-MED: SW Port

      Indicates whether Link Layer Discovery Protocol Media Endpoint Discovery (LLDP-MED) is enabled on the switch port.

      LLDP Power Priority

      Advertises the phone power priority to the switch, enabling the switch to appropriately provide power to the phones. Settings include:

      • Unknown (default)
      • Low
      • High
      • Critical

      LLDP Asset ID

      Identifies the asset ID assigned to the phone for inventory management.

      SSH Access Enabled

      Indicated whether the phone accepts or blocks the SSH connections.

      Network Statistics Area

      These network statistics areas on a phone web page provide information about network traffic on the phone:

      • Ethernet Information area: Displays information about Ethernet traffic. Ethernet Information Area Fields describes the items in this area.
      • Access area: Displays information about network traffic to and from the PC port on the phone. Access and Network Area Fields describes the items in this area.
      • Network area: Displays information about network traffic to and from the network port on the phone. Access and Network Area Fields describes the items in this area.

      To display a network statistics area, access the web page for the phone as described in the Access Web Page for Phone, and then click the Ethernet Information, the Access, and or the Network hyperlink.

      Ethernet Information Area Fields

      Table 3 Ethernet Information Area Items

      Item

      Description

      Tx Frames

      Total number of packets transmitted by the phone

      Tx broadcast

      Total number of broadcast packets transmitted by the phone

      Tx multicast

      Total number of multicast packets transmitted by the phone

      Tx unicast

      Total number of unicast packets transmitted by the phone

      Rx Frames

      Total number of packets received by the phone

      Rx broadcast

      Total number of broadcast packets received by the phone

      Rx multicast

      Total number of multicast packets received by the phone

      Rx unicast

      Total number of unicast packets received by the phone

      RxPacketNoDes

      Total number of shed packets caused by no direct memory access (DMA) descriptor

      Access and Network Area Fields

      Table 4 Access Area and Network Area Items

      Item

      Description

      Rx totalPkt

      Total number of packets received by the phone

      Rx crcErr

      Total number of packets received with CRC failed

      Rx alignErr

      Total number of packets received between 64 and 1522 bytes in length that have a bad Frame Check Sequence (FCS)

      Rx multicast

      Total number of multicast packets received by the phone

      Rx broadcast

      Total number of broadcast packets received by the phone

      Rx unicast

      Total number of unicast packets received by the phone

      Rx shortErr

      Total number of frame check sequence (FCS) error packets or Align error packets received that are less than 64 bytes in size

      Rx shortGood

      Total number of good packets received that are less than 64 bytes size

      Rx longGood

      Total number of good packets received that are greater than 1522 bytes in size

      Rx longErr

      Total number of FCS error packets or Align error packets received that are greater than 1522 bytes in size

      Rx size64

      Total number of packets received, including bad packets, that are between 0 and 64 bytes in size

      Rx size65to127

      Total number of packets received, including bad packets, that are between 65 and 127 bytes in size

      Rx size128to255

      Total number of packets received, including bad packets, that are between 128 and 255 bytes in size

      Rx size256to511

      Total number of packets received, including bad packets, that are between 256 and 511 bytes in size

      Rx size512to1023

      Total number of packets received, including bad packets, that are between 512 and 1023 bytes in size

      Rx size1024to1518

      Total number of packets received, including bad packets, that are between 1024 and 1518 bytes in size

      Rx tokenDrop

      Total number of packets dropped due to lack of resources (for example, FIFO overflow)

      Tx excessDefer

      Total number of packets delayed from transmitting due to medium being busy

      Tx lateCollision

      Number of times that collisions occurred later than 512 bit times after the start of packet transmission

      Tx totalGoodPkt

      Total number of good packets (multicast, broadcast, and unicast) received by the phone

      Tx Collisions

      Total number of collisions that occurred while a packet was being transmitted

      Tx excessLength

      Total number of packets not transmitted because the packet experienced 16 transmission attempts

      Tx broadcast

      Total number of broadcast packets transmitted by the phone

      Tx multicast

      Total number of multicast packets transmitted by the phone

      LLDP FramesOutTotal

      Total number of LLDP frames sent out from the phone

      LLDP AgeoutsTotal

      Total number of LLDP frames that have been time out in cache

      LLDP FramesDiscardedTotal

      Total number of LLDP frames that are discarded when any of the mandatory TLVs is missing or out of order or contains out of range string length.

      LLDP FramesInErrorsTotal

      Total number of LLDP frames that received with one or more detectable errors

      LLDP FramesInTotal

      Total number of LLDP frames received on the phone.

      LLDP TLVDiscardedTotal

      Total number of LLDP TLVs that are discarded.

      LLDP TLVUnrecognizedTotal

      Total number of LLDP TLVs that are not recognized on the phone.

      CDP Neighbor Device ID

      Identifier of a device connected to this port discovered by CDP protocol.

      CDP Neighbor IP Address

      IP address of the neighbor device discovered by CDP protocol.

      CDP Neighbor Port

      Neighbor device port to which the phone is connected discovered by CDP protocol.

      LLDP Neighbor Device ID

      Identifier of a device connected to this port discovered by LLDP protocol.

      LLDP Neighbor IP Address

      IP address of the neighbor device discovered by LLDP protocol.

      LLDP Neighbor Port

      Neighbor device port to which the phone is connected discovered by LLDP protocol.

      Device Logs Area

      The Device Logs area on a phone web page provides information you can use to help monitor and troubleshoot the phone.

      • Console Logs: Includes hyperlinks to individual log files. The console log files include debug and error messages received on the phone.
      • Core Dumps: Includes hyperlinks to individual dump files.
      • Status Messages area: Displays up to the 10 most recent status messages that the phone has generated since it was last powered up. You can also see this information from the Status Messages screen on the phone. Status Messages describes the status messages that can appear. To display the Status Messages, access the web page for the phone as described in the Access Web Page for Phone, and then click the Status Messages hyperlink.
      • Debug Display area: Displays debug messages that might be useful to Cisco TAC if you require assistance with troubleshooting.

      Streaming Statistics

      A Cisco Unified IP Phone can stream information to and from up to three devices simultaneously. A phone streams information when it is on a call or running a service that sends or receives audio or data.

      The streaming statistics areas on a phone web page provide information about the streams. Most calls use only one stream (Stream 1), but some calls use two or three stream. For example, a barged call uses Stream 1 and Stream 2.

      To display a Streaming Statistics area, access the web page for the phone as described in the Access Web Page for Phone, and then click the Stream 1, the Stream 2, or the Stream 3 hyperlink.

      The following table describes the items in the Streaming Statistics areas.

      Table 5 Streaming Statistics Area Items

      Item

      Description

      Remote Address

      IP address and UDP port of the destination of the stream.

      Local Address

      IP address and UPD port of the phone.

      Start Time

      Internal time stamp indicating when Cisco Unified Communications Manager requested that the phone start transmitting packets.

      Stream Status

      Indication of whether streaming is active.

      Host Name

      Unique, fixed name that is automatically assigned to the phone based on its MAC address.

      Sender Packets

      Total number of RTP data packets transmitted by the phone since starting this connection. The value is 0 if the connection is set to receive only mode.

      Sender Octets

      Total number of payload octets transmitted in RTP data packets by the phone since starting this connection. The value is 0 if the connection is set to receive only mode.

      Sender Codec

      Type of audio encoding used for the transmitted stream.

      Sender Reports Sent

      (see note)

      Number of times the RTCP Sender Reports have been sent.

      Sender Report Time Sent

      (see note)

      Internal time stamp indication when a RTCP Sender Report was sent.

      Rcvr Lost Packets

      Total number of RTP data packets that have been lost since starting receiving data on this connection. Defined as the number of expected packets less the number of packets actually received, where the number of received packets includes any that are late or duplicate. The value displays as 0 if the connection was set to send-only mode.

      Avg Jitter

      Estimate of mean deviation of the RTP data packet inter-arrival time, measured in milliseconds. The value displays as 0 if the connection was set to send-only mode.

      Rcvr Codec

      Type of audio encoding used for the received stream.

      Rcvr Reports Sent

      (See note)

      Number of times the RTCP Receiver Reports have been sent.

      Rcvr Report Time Sent

      (see note)

      Internal time stamp indication when a RTCP Receiver Report was sent.

      Rcvr Packets

      Total number of RTP data packets received by the phone since starting receiving data on this connection. Includes packets received from different sources if this is a multicast call. The value displays as 0 if the connection was set to send-only mode.

      Rcvr Octets

      Total number of payload octets received in RTP data packets by the device since starting reception on the connection. Includes packets received from different sources if this is a multicast call. The value displays as 0 if the connection was set to send-only mode.

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

      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 (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.

      Max Jitter

      Maximum value of instantaneous jitter, in milliseconds.

      Sender Size

      RTP packet size, in milliseconds, for the transmitted stream.

      Sender Reports Received

      (see note)

      Number of times RTCP Sender Reports have been received.

      Sender Report Time Received

      (see note)

      Last time at which an RTCP Sender Report was received.

      Rcvr Size

      RTP packet size, in milliseconds, for the received stream.

      Rcvr Discarded

      RTP packets received from network but discarded from jitter buffers.

      Rcvr Reports Received

      (see note)

      Number of times RTCP Receiver Reports have been received.

      Rcvr Report Time Received

      (see note)

      Last time at which an RTCP Receiver Report was received.

      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.

      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.729 A /AB gives 3.7

      MOS LQK Version

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

      Cmltve 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 (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.


      Note


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