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Configuring Wideband Codec - replacement

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Configuring Wideband Codec Chapter 6 Customizing the Cisco Unified IP Phone Note When you upgrade Cisco Unified Communications Manager, a default List.xml file will replace your customized List.xml file. After you customize the List.xml file, make a copy of the file and store it in another location. After upgrading Cisco Unified Communications Manager, replace the default List.xml file with your stored copy. Step 6 To cache the new List.xml file, stop and start the TFTP service by using Cisco Unified Communications Manager Serviceability or disable and re-enable the Enable Caching of Constant and Bin Files at Startup TFTP service parameter (located in the Advanced Service Parameters). Configuring Wideband Codec If Cisco Unified Communications Manager has been configured to use G.722 (G.722 is enabled by default for the Cisco Unified IP Phone 7962G and 7942G) and if the far endpoint supports G.722, the call connects using the G.722 codec in place of G.711. This situation occurs regardless of whether the user has enabled a wideband headset or wideband handset, but if either the headset or handset is enabled, the user may notice greater audio sensitivity during the call. Greater sensitivity means improved audio clarity but also means that more background noise can be heard by the far endpoint-noise such as rustling papers or nearby conversations. Even without a wideband headset or handset, some users may prefer the additional sensitivity of G.722. Other users may be distracted by the additional sensitivity of G.722. Two parameters in Cisco Unified Communications Manager Administration affect whether wideband is supported for this Cisco Unified Communications Manager server and/or a specific phone: • Advertise G.722 Codec-From Cisco Unified Communications Manager Administration, choose System > Enterprise Parameters. The default value of this enterprise parameter is True, which means that all Cisco Unified IP Phone Models 7942G, 7962G, 7945G, 7965G, and 7975G that are registered to this Cisco Unified Communications Manager will advertise G.722 to Cisco Unified Communications Manager. If each endpoint in the attempted call supports G.722 in its capabilities set, Cisco Unified Communications Manager will choose that codec for the call. • Advertise G.722 Codec-From Cisco Unified Communications Manager Administration, choose Device > Phone. The default value of this product-specific parameter is to use the value specified in the enterprise parameter. If you want to override this on a per-phone basis, choose Enabled or Disabled in the Advertise G.722 Codec parameter on the Product Specific Configuration area of the Phone Configuration window. Cisco Unified IP Phone 7962G and 7942G Administration Guide for Cisco Unified Communications Manager 6.1 6-6 OL-14625-01

Section	Page
Cisco Unified IP Phone 7962G and 7942G Administration Guide for Cisco Unified Communications Manager 6.1	1
Contents	5
Preface	11
An Overview of the Cisco Unified IP Phone	15
Understanding the Cisco Unified IP Phone 7962G and 7942G	16
What Networking Protocols are Used?	18
What Features are Supported on the Cisco Unified IP Phone 7962G and 7942G?	21
Feature Overview	21
Configuring Telephony Features	22
Configuring Network Parameters Using the Cisco Unified IP Phone	22
Providing Users with Feature Information	22
Understanding Security Features for Cisco Unified IP Phones	22
Overview of Supported Security Features	24
Understanding Security Profiles	26
Identifying Encrypted and Authenticated Phone Calls	27
Supporting 802.1X Authentication on Cisco Unified IP Phones	29
Security Restrictions	30
Overview of Configuring and Installing Cisco Unified IP Phones	31
Configuring Cisco Unified IP Phones in Cisco Unified Communications Manager	31
Installing Cisco Unified IP Phones	34
Preparing to Install the Cisco Unified IP Phone on Your Network	37
Understanding Interactions with Other Cisco Unified IP Telephony Products	37
Understanding How the Cisco Unified IP Phone Interacts with Cisco Unified Communications Manager	38
Understanding How the Cisco Unified IP Phone Interacts with the VLAN	38
Providing Power to the Cisco Unified IP Phone	39
Power Guidelines	40
Power Outage	40
Obtaining Additional Information about Power	41
Understanding Phone Configuration Files	41
Understanding the Phone Startup Process	43
Adding Phones to the Cisco Unified Communications Manager Database	44
Adding Phones with Auto-Registration	45
Adding Phones with Auto-Registration and TAPS	46
Adding Phones with Cisco Unified Communications Manager Administration	47
Adding Phones with BAT	47
Using Cisco Unified IP Phones with Different Protocols	47
Converting a New Phone from SCCP to SIP	48
Converting an In-Use Phone from SCCP to SIP	48
Converting an In-Use Phone from SIP to SCCP	48
Deploying a Phone in an SCCP and SIP Environment	49
Determining the MAC Address for a Cisco Unified IP Phone	49
Setting Up the Cisco Unified IP Phone	51
Before You Begin	51
Network Requirements	51
Cisco Unified Communications Manager Configuration	52
Safety	52
Understanding the Cisco Unified IP Phone 7962G and 7942G Components	53
Network and Access Ports	53
Handset	54
Speakerphone	54
Headset	54
Installing the Cisco Unified IP Phone	56
Attaching the Cisco Unified IP Phone Expansion Module 7914 (SCCP Phones Only)	59
Adjusting the Placement of the Cisco Unified IP Phone	60
Adjusting Cisco Unified IP Phone Placement on the Desktop	60
Securing the Phone with a Cable Lock	60
Mounting the Phone to the Wall	61
Verifying the Phone Startup Process	62
Configuring Startup Network Settings	63
Configuring Security on the Cisco Unified IP Phone	64
Configuring Settings on the Cisco Unified IP Phone	67
Configuration Menus on the Cisco Unified IP Phone	67
Displaying a Configuration Menu	68
Unlocking and Locking Options	69
Editing Values	69
Overview of Options Configurable from a Phone	70
Network Configuration Menu	71
Device Configuration Menu	76
CallManager Configuration Menu	76
SIP Configuration Menu (SIP Phones Only)	77
Call Preferences Menu	80
HTTP Configuration Menu	81
Locale Configuration Menu	82
UI Configuration Menu	83
Media Configuration Menu	84
Ethernet Configuration Menu	87
Security Configuration Menu	87
QoS Configuration Menu	88
Network Configuration Menu	89
Security Configuration Menu	92
CTL File Screen	93
Trust List Menu	95
802.1X Authentication and Status	95
Configuring Features, Templates, Services, and Users	99
Telephony Features Available for the Cisco Unified IP Phone	99
Configuring Corporate and Personal Directories	110
Configuring Corporate Directories	111
Configuring Personal Directory	111
Modifying Phone Button Templates	111
Configuring Softkey Templates	112
Setting Up Services	112
Adding Users to Cisco Unified Communications Manager	113
Managing the User Options Web Pages	113
Giving Users Access to the User Options Web Pages	114
Specifying Options that Appear on the User Options Web Pages	114
Customizing the Cisco Unified IP Phone	115
Customizing and Modifying Configuration Files	115
Creating Custom Phone Rings	116
Ringlist.xml File Format Requirements	116
PCM File Requirements for Custom Ring Types	117
Configuring a Custom Phone Ring	117
Creating Custom Background Images	117
List.xml File Format Requirements	118
PNG File Requirements for Custom Background Images	118
Configuring a Custom Background Image	119
Configuring Wideband Codec	120
Viewing Model Information, Status, and Statistics on the Cisco Unified IP Phone	121
Model Information Screen	122
Status Menu	122
Status Messages Screen	123
Network Statistics Screen	129
Firmware Versions Screen	130
Expansion Module Status Screen (SCCP Phones Only)	131
Call Statistics Screen	132
Monitoring the Cisco Unified IP Phone Remotely	135
Accessing the Web Page for a Phone	136
Disabling and Enabling Web Page Access	137
Device Information	138
Network Configuration	139
Network Statistics	143
Device Logs	145
Streaming Statistics	145
Troubleshooting and Maintenance	149
Resolving Startup Problems	150
Symptom: The Cisco Unified IP Phone Does Not Go Through its Normal Startup Process	150
Symptom: The Cisco Unified IP Phone Does Not Register with Cisco Unified Communications Manager	151
Symptom: Cisco Unified IP Phone Unable to Obtain IP Address	154
Cisco Unified IP Phone Resets Unexpectedly	154
Verifying the Physical Connection	154
Identifying Intermittent Network Outages	155
Verifying DHCP Settings	155
Checking Static IP Address Settings	155
Verifying the Voice VLAN Configuration	155
Verifying that the Phones Have Not Been Intentionally Reset	155
Eliminating DNS or Other Connectivity Errors	156
Checking Power Connection	156
Troubleshooting Cisco Unified IP Phone Security	157
General Troubleshooting Tips	158
General Troubleshooting Tips for the Cisco Unified IP Phone Expansion Module 7914 (SCCP Phones Only)	161
Resetting or Restoring the Cisco Unified IP Phone	161
Performing a Basic Reset	162
Performing a Factory Reset	162
Using the Quality Report Tool	163
Monitoring the Voice Quality of Calls	163
Using Voice Quality Metrics	164
Troubleshooting Tips	165
Where to Go for More Troubleshooting Information	165
Cleaning the Cisco Unified IP Phone	166
Providing Information to Users Via a Website	167
How Users Obtain Support for the Cisco Unified IP Phone	167
Giving Users Access to the User Options Web Pages	167
How Users Access the Online Help System on the Cisco Unified IP Phone	168
How Users Get Copies of Cisco Unified IP Phone Manuals	168
How Users Subscribe to Services and Configure Phone Features	168
How Users Access a Voice Messaging System	169
How Users Configure Personal Directory Entries	169
Installing and Configuring the Cisco Unified IP Phone Address Book Synchronizer	170
Feature Support by Protocol for Cisco Unified IP Phone 7962G and 7942G	173
Supporting International Users	177
Adding Language Overlays to Phone Buttons	177
Installing the Cisco Unified Communications Manager Locale Installer	177
Technical Specifications	179
Physical and Operating Environment Specifications	179
Cable Specifications	180
Network and Access Port Pinouts	180

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6-6

Cisco Unified IP Phone 7962G and 7942G Administration Guide for Cisco Unified Communications Manager 6.1

OL-14625-01

Chapter 6

Customizing the Cisco Unified IP Phone

Configuring Wideband Codec

Note

When you upgrade Cisco Unified Communications Manager, a default List.xml file will replace

your customized List.xml file. After you customize the List.xml file, make a copy of the file and

store it in another location. After upgrading Cisco Unified Communications Manager, replace

the default List.xml file with your stored copy.

Step 6

To cache the new List.xml file, stop and start the TFTP service by using Cisco Unified Communications

Manager Serviceability or disable and re-enable the Enable Caching of Constant and Bin Files at Startup

TFTP service parameter (located in the Advanced Service Parameters).

Configuring Wideband Codec

If Cisco Unified Communications Manager has been configured to use G.722 (G.722 is enabled by

default for the Cisco Unified IP Phone 7962G and 7942G) and if the far endpoint supports G.722, the

call connects using the G.722 codec in place of G.711. This situation occurs regardless of whether the

user has enabled a wideband headset or wideband handset, but if either the headset or handset is enabled,

the user may notice greater audio sensitivity during the call. Greater sensitivity means improved audio

clarity but also means that more background noise can be heard by the far endpoint—noise such as

rustling papers or nearby conversations. Even without a wideband headset or handset, some users may

prefer the additional sensitivity of G.722. Other users may be distracted by the additional sensitivity of

G.722.

Two parameters in Cisco Unified Communications Manager Administration affect whether wideband is

supported for this Cisco Unified Communications Manager server and/or a specific phone:

•

Advertise G.722 Codec—From Cisco Unified Communications Manager Administration, choose

System > Enterprise Parameters

. The default value of this enterprise parameter is

True

, which

means that all Cisco Unified IP Phone Models 7942G, 7962G, 7945G, 7965G, and 7975G that are

registered to this Cisco Unified Communications Manager will advertise G.722 to Cisco Unified

Communications Manager. If each endpoint in the attempted call supports G.722 in its capabilities set,

Cisco Unified Communications Manager will choose that codec for the call.

•

Advertise G.722 Codec—From Cisco Unified Communications Manager Administration, choose

Device > Phone

. The default value of this product-specific parameter is to use the value specified

in the enterprise parameter. If you want to override this on a per-phone basis, choose

Enabled

Disabled

in the Advertise G.722 Codec parameter on the Product Specific Configuration area of the

Phone Configuration window.