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, see Troubleshooting and Maintenance.

Access Web Page for Phone

To access the web page for a Cisco Unified IP Phone, perform 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 by using one of these methods:

  1. 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.

  2. On the phone, press the Settings 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)

Cisco Unified IP Phone Web Page Information

The web page for a 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

    • 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, Stream 3, Stream 4 , and Stream 5 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 Cisco Unified Communications Manager User Options web pages.

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, follow 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

Scroll down to the Product Specific Configuration section. From the Web Access drop-down list box, choose Disabled 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 phone 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 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 its 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

Expansion Module 1

Phone load ID for the first Cisco Unified IP Phone Expansion Module.

Expansion Module 2

Phone load ID for the second Cisco Unified IP Phone Expansion Module.

Hardware Revision

Revision value of the phone hardware

Serial Number

Serial number of the phone

Model Number

Model number of the phone

Message Waiting

Indicator of a voice message on any line of 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 that is 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

Time zone 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.

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.

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 this information.

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 to 5

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

DNS Server 1 to 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 CM 1 to 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 item may also include the Survivable Remote Site Telephony (SRST) designation, which identifies 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 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
  • 1000H = 1000-BaseT/half duplex
  • 1000F = 1000-BaseT/full duplex
  • No Link = No connection to the switch port

PC Port Configuration

Speed and duplex of the switch port, where:

  • A = Autonegotiate
  • 10H = 10-BaseT/half duplex
  • 10F = 10-BaseT/full duplex
  • 100H = 100-BaseT/half duplex
  • 100F = 100-BaseT/full duplex
  • 1000H = 1000-BaseT/half duplex
  • 1000F = 1000-BaseT/full duplex
  • No Link = No connection to the PC port

To configure the setting on multiple phones simultaneously, configure the Remote Port Configuration in the 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.

Headset enabled

Indicates whether the Headset button is enabled on 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

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

Speaker Enabled

Indicates whether the speakerphone is enabled on the phone.

GARP Enabled

Indicates whether the phone learns MAC addresses from Gratuitous ARP responses.

Video Capability Enabled

Indicates whether the phone can participate in video calls when connected to an appropriately equipped PC.

Voice VLAN Enabled

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

Auto Line Select

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

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

PC VLAN

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

Forwarding Delay

Indicates whether the internal switch begins forwarding packets between the PC port and switched port on the phone when the phone becomes active.

CDP: PC Port

Indicates whether CDP is supported on the PC port.

CDP: SW Port

Indicates whether CDP is supported on the switch port.

LLDP-MED: SW Port

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

LLDP: PC Port

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

LLDP Asset ID

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

Wireless Headset Hookswitch Control

Enables users to receive notifications of incoming calls and answer or end calls while working in a wireless environment.

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

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.

  • Access area: Displays information about network traffic to and from the PC port on the phone.

  • Network area: Displays information about network traffic to and from the network port on the phone.

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

Ethernet Information Area

Table 3. Ethernet Information Area Items

Item

Description

Tx Frames

Total number of packets that the phone transmits

Tx broadcast

Total number of broadcast packets that the phone transmits

Tx multicast

Total number of multicast packets that the phone transmits

Tx unicast

Total number of unicast packets that the phone transmits

Rx Frames

Total number of packets the phone receives

Rx broadcast

Total number of broadcast packets the phone receives

Rx multicast

Total number of multicast packets the phone receives

Rx unicast

Total number of unicast packets the phone receives

RxPacketNoDes

Total number of shed packets that a missing Direct Memory Access (DMA) descriptor causes

Access and Network Areas

Table 4. Access Area and Network Area Items

Item

Description

Rx totalPkt

Total number of packets that the phone receives

Rx crcErr

Total number of packets that are received with CRC failed

Rx alignErr

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

Rx multicast

Total number of multicast packets that the phone receives

Rx broadcast

Total number of broadcast packets that the phone receives

Rx unicast

Total number of unicast packets that the phone receives

Rx shortErr

Total number of FCS error packets or Align error packets that are received with less than 64 bytes in size

Rx shortGood

Total number of good packets that the phone receives are less than 64 bytes size

Rx longGood

Total number of good packets that the phone receives are greater than 1522 bytes in size

Rx longErr

Total number of FCS error packets or Align error packets that the phone receives 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 that the phone receives, including bad packets, that are between 65 and 127 bytes in size

Rx size128to255

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

Rx size256to511

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

Rx size512to1023

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

Rx size1024to1518

Total number of packets that the phone receives, 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) that the phone receives

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 that a phone transmits

Tx multicast

Total number of multicast packets that a phone transmits

Neighbor Device ID

Identifier of a device connected to this port

Neighbor IP Address

IP address of the neighbor device

Neighbor Port

Neighbor device port to which the phone is connected

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 that a phone receives

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 that 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 Screen describes the status messages that can appear.

    To display the Status Messages, access the web page for the phone as described in 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 Access Web Page for Phone, and then click the Stream 1, the Stream 2, or the Stream 3 hyperlink (Cisco Unified IP Phones 7975G, 7965G, and 7945G also include Stream 4 and Stream 5 hyperlinks).

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 indicating 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 indicating 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:

For Cisco Unified IP Phone 7975G, 7965G, and 7945G:

  • G.711 gives 4.5.

  • G.722 gives 4.5.

  • G.728/iLBC gives 3.9.

  • G.729 A/AB gives 3.8.

For Cisco Unified IP Phone 7971G-GE and 7970G:

  • 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.

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.

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:

For Cisco Unified IP Phone 7975G, 7965G, and 7945G:

  • G.711 gives 4.5.

  • G.722 gives 4.5.

  • G.728/iLBC gives 3.9.

  • G.729 A/AB gives 3.8.

For Cisco Unified IP Phone 7971G-GE and 7970G:

  • 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 and thus displays as 0.