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Voice Quality Metrics, Cisco Unified IP Phone uses.

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Chapter 6 Viewing Model Information, Status, Statistics, and Security Information on the Cisco Unified IP Phone Call Statistics Screen Table 6-4 Call Statistics Items (continued) Item Avg Jtr Max Jtr RxDisc RxLost Voice Quality Metrics MOS LQK Avg MOS LQK Min MOS LQK Max MOS LQK MOS LQK Version Cmltve Conceal Ratio Interval Conceal Ratio Max Conceal Ratio Conceal Secs Severely Conceal Secs Description Estimated average RTP packet jitter (dynamic delay that a packet encounters when going through the network) observed since the receiving voice stream was opened. Maximum jitter observed since the receiving voice stream was opened. Number of RTP packets in the receiving voice stream that have been discarded (bad packets, too late, and so on). Note The phone will discard payload type 19 comfort noise packets that are generated by Cisco Gateways, which will increment this counter. Missing RTP packets (lost in transit). 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 the "Monitoring the Voice Quality of Calls" section on page 8-15. Note The MOS LQK score can vary based on the type of codec that the Cisco Unified IP Phone uses. Average MOS LQK score observed for the entire voice stream. Lowest MOS LQK score observed from start of the voice stream. 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 Version of the Cisco proprietary algorithm used to calculate MOS LQK scores. Total number of concealment frames divided by total number of speech frames received from start of the voice stream. 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. Highest interval concealment ratio from start of the voice stream. Number of seconds that have concealment events (lost frames) from the start of the voice stream (includes severely concealed seconds). Number of seconds that have more than 5 percent concealment events (lost frames) from the start of the voice stream. OL-15498-01 Cisco Unified IP Phone 7960G/7940G Administration Guide for Cisco Unified Communications Manager 7.0 (SCCP) 6-11

Section	Page
Cisco Unified IP Phone 7960G/7940G Administration Guide for Cisco Unified Communications Manager 7.0 (SCCP)	1
Contents	3
Preface	9
An Overview of the Cisco Unified IP Phone	13
Understanding the Cisco Unified IP Phones 7960G and 7940G	13
What Networking Protocols Are Used?	16
What Features are Supported on the Cisco Unified IP Phones 7960G and 7940G?	17
Feature Overview	18
Configuring Telephony Features	18
Configuring Network Parameters Using the Cisco Unified IP Phone	19
Providing Users with Feature Information	19
Understanding Security Features for Cisco Unified IP Phones	19
Overview of Supported Security Features	21
Understanding Security Profiles	22
Identifying Encrypted and Authenticated Phone Calls	23
Security Restrictions	23
CAPF Interaction when the Phone Resets	24
Overview of Configuring and Installing Cisco Unified IP Phones	24
Configuring Cisco Unified IP Phones in Cisco Unified Communications Manager	25
Checklist for Configuring the Cisco Unified IP Phone 7960G and 7940G in Cisco Unified Communications Manager	25
Installing Cisco Unified IP Phones	28
Checklist for Installing the Cisco Unified IP Phone 7960G and 7940G	28
Preparing to Install the Cisco Unified IP Phone on Your Network	31
Understanding Interactions with Other Cisco Unified IP Communications Products	32
Understanding How the Cisco Unified IP Phone Interacts with Cisco Unified Communications Manager	32
Understanding How the Cisco Unified IP Phone Interacts with the VLAN	33
Providing Power to the Cisco Unified IP Phone	33
Power Guidelines	34
Power Outage	34
Obtaining Additional Information about Power	34
Understanding Phone Configuration Files	35
Understanding the Phone Startup Process	36
Adding Phones to the Cisco Unified Communications Manager Database	37
Adding Phones with Auto-Registration	38
Adding Phones with Auto-Registration and TAPS	39
Adding Phones with Cisco Unified Communications Manager Administration	39
Adding Phones with BAT	40
Using Cisco Unified IP Phones with Different Protocols	40
Converting a New Phone from SCCP to SIP	40
Converting an In-Use Phone from SCCP to SIP	41
Converting an In-Use Phone from SIP to SCCP	41
Deploying a Phone in an SCCP and SIP Environment	41
Determining the MAC Address for a Cisco Unified IP Phone	42
Setting Up the Cisco Unified IP Phone	43
Before You Begin	43
Network Requirements	44
Cisco Unified Communications Manager Configuration	44
Understanding the Cisco Unified IP Phone 7960G and 7940G Components	44
Network and Access Ports	45
Handset	45
Speakerphone	45
Headset	45
Audio Quality Subjective to the User	46
Connecting a Headset	46
Disabling a Headset	46
Using External Devices with Your Cisco Unified IP Phone	46
Installing the Cisco Unified IP Phone	47
Attaching the Cisco Unified IP Phone Expansion Module 7914	49
Adjusting the Placement of the Cisco Unified IP Phone	50
Adjusting Cisco Unified IP Phone Footstand and Phone Height	50
Mounting the Phone to the Wall	50
Verifying the Phone Startup Process	51
Configuring Startup Network Settings	52
Configuring Security on the Cisco Unified IP Phone	52
Configuring Network Settings on the Cisco Unified IP Phone	55
Displaying the Network Configuration Menu	55
Unlocking and Locking Options	56
Editing Values	57
Overview of Network Configuration Options	57
Network Configuration Menu	58
Cisco Unified Communications Manager Options	64
Configuring Features, Templates, Services, and Users	67
Telephony Features Available for the Cisco Unified IP Phone	68
Creating Custom Phone Rings	75
Configuring Corporate and Personal Directories	75
Configuring Corporate Directories	75
Configuring Personal Directory	75
Modifying Phone Button Templates	76
Configuring Softkey Templates	77
Setting Up Services	77
Adding Users to Cisco Unified Communications Manager	78
Managing the User Options Web Pages	78
Giving Users Access to the User Options Web Pages	78
Specifying Options that Appear on the User Options Web Pages	78
Viewing Model Information, Status, Statistics, and Security Information on the Cisco Unified IP Phone	81
Model Information Screen	82
Status Menu	82
Status Messages Screen	83
Network Statistics Screen	87
Firmware Versions Screen	88
Expansion Module Stats Screen	89
Call Statistics Screen	90
Security Configuration Menu	92
CTL File Menu	92
Trust List Menu	94
Monitoring the Cisco Unified IP Phone Remotely	95
Accessing the Web Page for a Phone	96
Disabling and Enabling Web Page Access	97
Device Information	97
Network Configuration	98
Network Statistics	101
Ethernet Statistics	101
Port 1 (Network), Port 2 (Access), and Port 3 (Phone) Statistics	102
Device Logs	104
Stack Statistics	105
Status Messages	105
Streaming Statistics	105
Troubleshooting and Maintenance	109
Resolving Startup Problems	109
Symptom: The Cisco Unified IP Phone Does Not Go Through its Normal Startup Process	110
Symptom: The Cisco Unified IP Phone Does Not Register with Cisco Unified Communications Manager	110
Identifying Error Messages	111
Registering the Phone with Cisco Unified Communications Manager	111
Checking Network Connectivity	111
Verifying TFTP Server Settings	111
Verifying IP Addressing and Routing	112
Verifying DNS Settings	112
Verifying Cisco Unified Communications Manager Settings	112
Cisco Unified Communications Manager and TFTP Services Are Not Running	112
Creating a New Configuration File	113
Symptom: Cisco Unified IP Phone Unable to Obtain IP Address	114
Cisco Unified IP Phone Resets Unexpectedly	114
Verifying Physical Connection	114
Identifying Intermittent Network Outages	115
Verifying DHCP Settings	115
Checking Static IP Address Settings	115
Verifying Voice VLAN Configuration	115
Verifying that the Phones Have Not Been Intentionally Reset	116
Eliminating DNS or Other Connectivity Errors	116
Troubleshooting Cisco Unified IP Phone Security	117
General Troubleshooting Tips	118
General Troubleshooting Tips for the Cisco Unified IP Phone Expansion Module 7914	120
Resetting or Restoring the Cisco Unified IP Phone	121
Performing a Basic Reset	121
Performing a Factory Reset	122
Using the Quality Report Tool	123
Monitoring the Voice Quality of Calls	123
Where to Go for More Troubleshooting Information	125
Cleaning the Cisco Unified IP Phone	125
Providing Information to Users Via a Website	127
How Users Obtain Support for the Cisco Unified IP Phone	127
Giving Users Access to the User Options Web Pages	127
How Users Get Copies of Cisco Unified IP Phone Manuals	128
Accessing Cisco 7900 Series Unified IP Phone eLearning Tutorials	128
How Users Subscribe to Services and Configure Phone Features	128
How Users Access a Voice Messaging System	129
How Users Configure Personal Directory Entries	129
Installing and Configuring the Cisco Unified IP Phone Address Book Synchronizer	130
Feature Support by Protocol for Cisco Unified IP Phone 7960G and 7940G	133
Supporting International Users	137
Adding Language Overlays to Phone Buttons	137
Installing the Cisco Unified Communications Manager Locale Installer	137
Technical Specifications	139
Physical and Operating Environment Specifications	139
Cable Specifications	140
Network and Access Port Pinouts	140
Basic Phone Administration Steps	143
Example User Information for these Procedures	143
Adding a User to Cisco Unified Communications Manager	144
Adding a User From an External LDAP Directory	144
Adding a User Directly to Cisco Unified Communications Manager	144
Configuring the Phone	145
Performing Final End User Configuration Steps	150

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6-11

Cisco Unified IP Phone 7960G/7940G Administration Guide for Cisco Unified Communications Manager 7.0 (SCCP)

OL-15498-01

Chapter 6

Viewing Model Information, Status, Statistics, and Security Information on the Cisco Unified IP Phone

Call Statistics Screen

Avg Jtr

Estimated average RTP packet jitter (dynamic delay that a packet

encounters when going through the network) observed since the receiving

voice stream was opened.

Max Jtr

Maximum jitter observed since the receiving voice stream was opened.

RxDisc

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

discarded (bad packets, too late, and so on).

Note

The phone will discard payload type 19 comfort noise packets that

are generated by Cisco Gateways, which will increment this counter.

RxLost

Missing RTP packets (lost in transit).

Voice Quality Metrics

MOS LQK

Score that is an objective estimate of the mean opinion score (MOS) for

listening quality (LQK) that rates from 5 (excellent) to 1 (bad). This score

is based on audible concealment events due to frame loss in the preceding

8-second interval of the voice stream. For more information, see the

“Monitoring the Voice Quality of Calls” section on page 8-15

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 3.7

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.

Table 6-4

Call Statistics Items (continued)

Item

Description