CHA PTER
8
Monitoring the Cisco Unified IP Phone
Remotely
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
This chapter describes the information that you can obtain from the phone’s 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 Chapter 7, “Viewing Model Information, Status, and Statistics
on the Cisco Unified IP Phone.”
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For more information about troubleshooting the Cisco Unified IP Phone 7970
Series, see Chapter 9, “Troubleshooting and Maintenance.”
This chapter includes these topics:
• Accessing the Web Page for a Phone, page 8-2
• Disabling and Enabling Web Page Access, page 8-3
• Device Information, page 8-4
• Network Configuration, page 8-6
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Chapter 8 M onitoring the Cisco UnifiedIP Phone Remotely
Accessing the Web Page for a Phone
• Network Statistics, page 8-11
• Device Logs, page 8-14
• Streaming Statistics, page 8-15
Accessing the Web Page for a 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 the “Disabling and
Enabling Web Page Access” section on page 8-3 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 web
page.
• 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:
8-2
http://IP_address
The web page for a Cisco Unified IP Phone 7970 Series includes these hyperlinks:
• Device Information—Displays device settings and related information for
the phone. For more information, see the “Device Information” section on
page 8-4.
• Network Configuration—Displays network configuration information and
information about other phone settings. For more information, see the
“Network Configuration” section on page 8-6.
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• Network Statistics—Includes the following hyperlinks, which provide
information about network traffic:
–
Ethernet Information—Displays information about Ethernet traffic.
For more information, see the “Network Statistics” section on page 8-11.
–
Access—Displays information about network traffic to and from the PC
port on the phone. For more information, see the “Network Statistics”
section on page 8-11.
–
Network—Displays information about network traffic to and from the
network port on the phone. For more information, see the “Network
Statistics” section on page 8- 11.
• Device Logs—Includes the follo wing hyperlinks, which p rovide information
that you can use for troubleshooting:
–
Console Logs—Includes hyperlinks to individual log files. For more
information, see the “Device Logs” section on page 8-14.
–
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. For more
information, see the “Device Logs” section on page 8-14.
Disabling and Enabling Web Page Access
–
Debug Display—Displays messages that might be useful to the Cisco
TAC if you require assistance with troubleshooting. For more
information, see the “Device Logs” section on page 8-14.
• Streaming Statistics—Includes the Stream 1, Stream 2, and Stream 3
hyperlinks, which display a variety of streaming statistics. For more
information, see the “Streaming Statistics” section on page 8-15.
Disabling and Enabling 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 phone’s User Options web pages.
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Device Information
Step 1 Choose Device > Phone.
Step 2 Specify the criteria to f ind the phone and click Find, or click Find to disp lay a list
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 one of these options:
Step 5 Click Update.
Chapter 8 M onitoring the Cisco UnifiedIP Phone Remotely
To control access to the web pages for a phone, follow these steps from
Cisco Unified Communications Manager Administration:
of all phones.
• Disabled—Prevents access to web pages for a phone.
• Enabled—Allows access to web pages for a phone.
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.
Device Information
The Device Information area on a phone’s web page displays device settings and
related information for the phone. Table 8-1 describes these items.
To display the Device Information area, access the web page for the phone as
described in the “Accessing the Web Page for a Phone” section on page 8-2, and
then click the Device Information hyperlink.
Table 8-1 Device Informatio n Area Items
Item Description
MAC Address Media Access Control (MAC) address of the phone
Host Name Unique, fixed name that is automatically assigned to
Phone DN Directory number assigned to the phone
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the phone based on its MAC address
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Chapter 8 Monitoring the Cisco Unified IPPhone Remotely
Table 8-1 Device Inform ation Area Items (continued)
Item Description
App Load ID Identifier of the firmware running on the phone
Boot Load ID Identifier of the factory-installed load running on the
Version Version of the firmware running on the phone
Expansion Module 1 Phone load ID for the first Cisco Unified IP Phone
Expansion Module 2 Phone load ID for the second Cisco Unified IP 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
UDI Displays the following Cisco Unique Device Identifier
Device Information
phone
Expansion Module 7914, if connected to a SCCP
phone
Expansion Module 7914, if connected to a SCCP
phone
line for this phone
(UDI) information about the phone:
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• 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
1
—Represents the hardware
version of the phone
• Serial Number—Displays the phone’s unique
serial number
Time Time obtained from the Date/Time Group in
Cisco Unified Communications Manager to which the
phone belongs
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Network Configuration
Table 8-1 Device Inform ation Area Items (continued)
Item Description
Time Zone Timezone obtained from the Date/Time Group in
Date Date obtained from the Date/Time Group in
1. The Version Identifier field might display blank if using an older model Cisco Unified IP Phone
because the hardware does not provide this information.
Network Configuration
The Network Configuration area on a phone’s web page displays network
configuration information and information about other phone settings. Table 8-2
describes this information.
You can view and set many of these items from the Network Conf iguration Menu
and the Device Configuration Menu on the Cisco Unified IP Phone. For more
information, see Chapter 5, “Configuring Features, Templates, Services, and
Users.”
Chapter 8 M onitoring the Cisco UnifiedIP Phone Remotely
Cisco Unified Communications Manager to which the
phone belongs
Cisco Unified Communications Manager to which the
phone belongs
8-6
To display the Network Configuration area, access the web page for the phone as
described in the “Accessing the Web Page for a Phone” section on page 8-2, and
then click the Network Configuration hyperlink.
Table 8-2 Network Configuration Area Items
Item Description
DHCP Server IP address of the Dynamic Host Configuration
Protocol (DHCP) server from which the phon e 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.
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Table 8-2 Network Configuration Area Items (continued)
Item Description
Host Name Host name that the DHCP server assigned to the
Domain Name Name of the Domain Name System (DNS) domain in
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
Default Router 1–5 Default router used by the phone (Default Router 1)
DNS Server 1–5 Primary Domain Name System (DNS) server (DNS
Operational VLAN ID Auxiliary Virtual Local Area Network (VLAN)
Admin. VLAN ID Auxiliary VLAN in which the phone is a member.
Network Configuration
phone.
which the phone resides.
used by the phone.
and optional backup routers (Default Router 2–5.
Server 1) and optional backup DNS servers (DNS
Server 2–5) used by the phone.
configured on a Cisco Catalyst switch in which the
phone is a member.
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Network Configuration
Chapter 8 M onitoring the Cisco UnifiedIP Phone Remotely
Table 8-2 Network Configuration Area Items (continued)
Item Description
CallManager 1–5 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 U nified 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 swit ches if th e
current server becomes unavailable.
8-8
• Blank—No current connection to this
Cisco U nified 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.
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.
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Table 8-2 Network Configuration Area Items (continued)
Item Description
Messages URL URL of the server from which the phone obtains
Services URL URL of the server from which the phone obtains
DHCP Enabled Indicates whether DHCP is being used by the phone.
DHCP Address
Released
Alternate TFTP Indicates whether the phone is using an alternative
Idle URL URL that the phone displays when the phone has not
Idle URL Time Number of seconds that the phone has not been used
Proxy Server URL URL of proxy server, which makes HTTP requests to
Authentication URL URL that the phone uses to validate requests made to
SW Port Configuration Speed and duplex of the switch port, where:
Network Configuration
message services.
Cisco Unified IP Phone services.
Indicates the setting of the DHCP Address Released
option on the phone’s Network Configuration menu.
TFTP server.
been used for the time specified by Idle URL T ime and
no menu is open.
and no menu is open before the XML service specified
by Idle URL is activated.
non-local host addresses on behalf of the phone HTTP
client and provides responses from the non-local host
to the phone HTTP client.
the phone web server.
• A—Auto Negotiate
• 10H—10-BaseT/half duplex
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• 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
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Network Configuration
Chapter 8 M onitoring the Cisco UnifiedIP Phone Remotely
Table 8-2 Network Configuration Area Items (continued)
Item Description
PC 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 PC port
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. Identif ies 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 b utton is enabled on the
phone.
User Locale Version Version of the user locale loaded on the phone.
Network Locale
Version
PC Port Disabled Indicates whether the PC port on the phone is enabled
Speaker Enabled Indicates whether the speakerphone is enabled on the
GARP Enabled Indicates whether the phone learns MAC addresses
Version of the network locale loaded on the phone.
or disabled.
phone.
from Gratuitous ARP responses.
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Chapter 8 Monitoring the Cisco Unified IP Phone Remotely
Table 8-2 Network Configuration Area Items (continued)
Item Description
Video Capability
Enabled
Voice VLAN Enabled Indicates whether the phone allows a device attached
Auto Line Select Indicates whether the phone shifts the c all focus to
DSCP for Call Control DSCP IP classification for call control signaling.
DSCP for
Configuration
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 whethe r web access is enabled (Yes) or
Span to PC Port Indicates whether the phone will forward packets
PC VLAN VLAN used to identify and remove 802.1P/Q tags
Network Statistics
Indicates whether the phone can participate in video
calls when connected to an appropriately equipped PC.
to the PC port to access the Voice VLAN.
incoming calls on all lines.
DSCP IP classification for any phone configuration
transfer.
disabled (No) for the phone.
transmitted and received on the network port to the
access port.
from packets sent to the PC.
Network Statistics
These network statistics areas on a phone’s web page provide information about
network traffic on the phone:
• Ethernet Information area—Displays information about Ethernet traffic.
Table 8-3 describes the items in this area.
• Access area—Displays information about network traffic to and from the PC
port on the phone. Table 8-4 describes the items in this area.
• Network area—Displays information about network traffic to and from the
network port on the phone. Table 8-4 describes the items in this area.
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Network Statistics
Chapter 8 M onitoring the Cisco UnifiedIP Phone Remotely
To display a network statistics area, access the web page for the phone as
described in the “Accessing the Web Page for a Phone” section on page 8-2, and
then click the Ethernet Information, the Access, and or the Network hyperlink.
Table 8-3 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 DMA
descriptor
8-12
Table 8-4 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 T otal number of p ackets recei ved between 64 and 1522
bytes in length that have a bad FCS
Rx multicast Total number of multicast packets received by the
phone
Rx broadcast Total number of broadcast packets received by the
phone
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Chapter 8 Monitoring the Cisco Unified IP Phone Remotely
Table 8-4 Access Area and Network Area Items (continued)
Item Description
Rx unicast Total number of unicast packets received by the phone
Rx shortErr Total number of FCS error packets or Align error
Rx shortGood Total number of good packets received that are less
Rx longGood Total number of good packet s recei v ed that are greater
Rx longErr Total number of FCS error packets or Align error
Rx size64 Total number of packets received, including bad
Rx size65to127 Total number of packets received, including bad
Rx size128to255 Total number of packets received, including bad
Rx size256to511 Total number of packets received, including bad
Rx size512to1023 Total number of packets received, including bad
Rx size1024to1518 Total number of packets received, including bad
Rx tokenDrop Total number of packets dropped due to lack of
Tx excessDefer Total number of packets delayed from transmitting due
Tx lateCollision Number of times that collisions occurred later than 512
Tx totalGoodPkt Total number of good packets (multicast, broadcast,
Network Statistics
packets received that are less than 64 bytes in size
than 64 bytes size
than 1522 bytes in size
packets received that are greater than 1522 bytes in
size
packets, that are between 0 and 64 bytes in size
packets, that are between 65 and 127 bytes in size
packets, that are between 128 and 255 bytes in size
packets, that are between 256 and 511 bytes in size
packets, that are between 512 and 1023 bytes in size
packets, that are between 1024 and 1518 bytes in size
resources (for example, FIFO overflow)
to medium being busy
bit times after the start of packet transmission
and unicast) received by the phone
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Device Logs
Device Logs
Chapter 8 M onitoring the Cisco UnifiedIP Phone Remotely
Table 8-4 Access Area and Network Area Items (continued)
Item Description
Tx Collisions T otal 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
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
8-14
The Device Logs area on a phone’ s web page provides informatio n you can use to
help monitor and troubleshoo t the pho ne.
• 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—Displa ys 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. Table 7-2
describes the status messages that can appear.
To display the Status Messages, access the web page for the phone as
described in the “Accessing the Web Page for a Phone” section on page 8-2,
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.
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Chapter 8 Monitoring the Cisco Unified IP Phone Remotely
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 a call or running a
service that sends or receives audio or data.
The streaming statistics areas on a phone’s 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 “Accessing the Web Page for a Phone” section on page 8-2, and
then click the Stream 1, the Stream 2, or the Stream 3 hyperlink.
Table 8-5 describes the items in the Streaming Statistics areas.
Table 8-5 Streaming Statistics Area Items
Item Description
Remote Address IP address and UDP port of the destination of the
Local Address IP address and UPD port of the phone.
Start Time Internal time stamp indicating when
Stream Status Indication of whether streaming is active or not.
Host Name Unique, fixed name that is automatically assigned to
Sender Packets Total number of RTP data packets transmitted by the
Sender Octets Total number of payload octets transmitted in R TP data
Sender Codec Type of audio encoding used for the transmitted
Streaming Statistics
stream.
Cisco Unified Communications Manager requested
that the phone start transmitting packets.
the phone based on its MAC address.
phone since starting this connection. The value is 0 if
the connection is set to receive only mode.
packets by the phone since starting this connection.
The value is 0 if the connection is set to receive only
mode.
stream.
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Streaming Statistics
Chapter 8 M onitoring the Cisco UnifiedIP Phone Remotely
Table 8-5 Streaming Statistics Area Items (continued)
Item Description
Sender Reports Sent1Number of times the RTCP Sender Reports have been
sent.
Sender Report Time
1
Sent
Rcvr Lost Packets Total number of RTP data packets that have been lost
Avg Jitter Estimate of mean deviation of the RTP data packet
Rcvr Codec Type of audio encoding used for the received stream.
Rcvr Reports Sent
Rcvr Report Time
1
Sent
Rcvr Packets Total number of RTP data packets received by the
Rcvr Octets Total number of payload octets received in RTP data
Internal time stamp indicating when a RTCP Sender
Report was sent.
since starting receiving data on this connection.
Defined as the number of expected packets less the
number of packets actua lly 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.
inter-arriv al time, measured in milliseconds. The v alue
displays as 0 if the connection was set to send-only
mode.
1
Number of times the RTCP Receiver Reports have
been sent.
Internal time stamp indicating when a RTCP Receiver
Report was sent.
phone since starting receiving dat a on this connect ion.
Includes packets received from dif ferent sources if this
is a multicast call. The value displays as 0 if the
connection was set to send-only mode.
packets by the device since starting reception on the
connection. Includes packets received from different
sources if this is a multicast call. The v alue displays as
0 if the connection was set to send-only mode.
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Chapter 8 Monitoring the Cisco Unified IP Phone Remotely
Table 8-5 Streaming Statistics Area Items (continued)
Item Description
MOS LQK Score that is an objecti ve esti mate of the mean opinion
A vg MOS LQK A verage MOS LQK score observed for the entire v oice
Min MOS LQK Lowest MOS LQK score observed from start of the
Max MOS LQK Baseline or highest MOS LQK score observed from
Streaming Statistics
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 the “Monitoring the Voice
Quality of Calls” section on page 9-24.
Note The MOS LQK score can vary based on the
type of codec that the Cisco Unified IP Phone
uses.
stream.
voice stream.
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
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• 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 detect ion (VAD), a longer interval mi ght
be required to accumulate 3 seconds of active speech.
Max Conceal Ratio Highest interval concealment ratio from start of the
voice stream.
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Streaming Statistics
Chapter 8 M onitoring the Cisco UnifiedIP Phone Remotely
Table 8-5 Streaming Statistics Area Items (continued)
Item Description
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
Max Jitter Maximum value of instantaneous jitter, in
Sender Size RTP packet size, in milliseconds, for the transmitted
Sender Reports
Received
Sender Report Time
Received
Rcvr Size RTP packet size, in milliseconds, for the received
Rcvr Discarded RTP pack ets received from n etwork but discarded fro m
Rcvr Reports
Received
Rcvr Report Time
Received
1
Estimate of the network latency, expressed in
milliseconds. Represents a running average of the
round-trip delay, measured when R TCP recei ver report
blocks are received.
milliseconds.
stream.
Number of times RTCP Sender Reports have been
1
received.
Last time at which an RTCP Sender Report was
1
received.
stream.
jitter buffers.
1
1
Number of times RTCP Receiver Reports have been
received.
Last time at which an RTCP Receiver Report was
received.
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Table 8-5 Streaming Statistics Area Items (continued)
Item Description
Voice Quality Metrics
MOS LQK Score that is an objecti ve esti mate of the mean opinion
A vg MOS LQK A verage MOS LQK score observed for the entire v oice
Min MOS LQK Lowest MOS LQK score observed from start of the
Max MOS LQK Baseline or highest MOS LQK score observed from
Streaming Statistics
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 the “Monitoring the Voice
Quality of Calls” section on page 9-24.
Note The MOS LQK score can vary based on the
type of codec that the Cisco Unified IP Phone
uses.
stream.
voice stream.
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
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• 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 detect ion (VAD), a longer interval mi ght
be required to accumulate 3 seconds of active speech.
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Streaming Statistics
Chapter 8 M onitoring the Cisco UnifiedIP Phone Remotely
Table 8-5 Streaming Statistics Area Items (continued)
Item Description
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.
1. When the RTP Control Protocol is disabled, no data generates for this field and thus displays as 0.
Related Topics
• “Configuring Settings on the Cisco Unified IP Phone” chapter
• “Configuring Features, Templates, Services, and Users” chapter
• “Call Statistics Screen” section on page 7-18
8-20
• “Monitoring the Voice Quality of Calls” section on page 9-24
Cisco Unified IP Phone 7970G/7971G-GE for Cisco Unified Communications Manager 6.0
OL-12232-01
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