Cisco 7911G - IP Phone VoIP, CP-7911G, 7906G, 7911G Administration Manual

Cisco Unified IP Phone 7906G and
7911G Administration Guide for
Cisco Unified Communications
Manager 6.0

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Text Part Number: OL11954-01

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Cisco Unified IP Phone 7906G and 7911G for Cisco Unified Communications Manager 6.0

© 2007 Cisco Systems, Inc. All rights reserved.

CONTENTS

Preface xiii

Overview xiii

Audience xiii

Organization xiv

Related Documentation xv

Obtaining Documentation, Obtaining Support, and Security Guidelines xvi

Cisco Product Security Overview xvi

Document Conventions xvii

CHAPTER

1 An Overview of the Cisco Unified IP Phone 1-1

Understanding the Cisco Unified IP Phones 7906G and 7911G 1-2

What Networking Protocols Are Used? 1-5

What Features are Supported? 1-9

Feature Overview 1-10
Configuring Telephony Features 1-11
Configuring Network Parameters Using the Cisco Unified IP Phone 1-11
Providing Users with Feature Information 1-12

Understanding Security Features for Cisco Unified IP Phones 1-12

Overview of Supported Security Features 1-15
Understanding Security Profiles 1-19
Identifying Encrypted and Authenticated Phone Calls 1-19

Establishing and Identifying Secure Conference Calls 1-20
Call Security Interactions and Restrictions 1-21

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Contents

Supporting 802.1X Authentication on Cisco Unified IP Phones 1-23

Overview 1-23
Required Network Components 1-24
Best Practices—Requirements and Recommendations 1-24

Security Restrictions 1-25

Overview of Configuring and Installing Cisco Unified IP Phones 1-26

Configuring Cisco Unified IP Phones in Cisco Unified Communications
Manager

Checklist for Configuring the Cisco Unified IP Phones 7906G and 7911G
in Cisco Unified Communications Manager

Installing Cisco Unified IP Phones 1-32

Checklist for Installing the Cisco Unified IP Phones 7906G and
7911G

1-26

1-27

1-32

CHAPTER

2 Preparing to Install the Cisco Unified IP Phone on Your Network 2-1

Understanding Interactions with Other Cisco Unified Communications
Products

2-2

Understanding How the Cisco Unified IP Phone Interacts with
Cisco Unified Communications Manager

2-2

Understanding How the Cisco Unified IP Phone Interacts with the VLAN 2-3

Providing Power to the Cisco Unified IP Phones 7906G and 7911G 2-4

Power Guidelines 2-5
Power Outage 2-5
Obtaining Additional Information about Power 2-6

Understanding Phone Configuration Files 2-7

SIP Dial Rules 2-8

Understanding the Phone Startup Process 2-8

Adding Phones to the Cisco Unified Communications Manager Database 2-12

Adding Phones with Auto-Registration 2-13
Adding Phones with Auto-Registration and TAPS 2-14

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Adding Phones with Cisco Unified Communications Manager
Administration

Adding Phones with BAT 2-16

Using Cisco Unified IP Phones with Different Protocols 2-17

Converting a New Phone from SCCP to SIP 2-17
Converting an In-Use Phone from SCCP to SIP 2-18
Converting an In-Use Phone from SIP to SCCP 2-18
Deploying a Phone in an SCCP and SIP Environment 2-19

Determining the MAC Address of a Cisco Unified IP Phone 2-19

2-16

CHAPTER

3 Setting Up the Cisco Unified IP Phone 3-1

Before You Begin 3-2

Network Requirements 3-2
Cisco Unified Communications Manager Configuration 3-3

Understanding the Cisco Unified IP Phones 7906G and 7911G Components 3-3

Network and Access Ports 3-4
Handset 3-4
Speaker 3-4

Monitor Mode 3-5
Group Listen Mode 3-5

Headset 3-6

Audio Quality Subjective to User 3-7
Connecting a Headset 3-7
Using External Devices with Your Cisco Unified IP Phone 3-8

Installing the Cisco Unified IP Phone 3-9

Mounting the Phone to a Wall 3-15

Verifying the Phone Startup Process 3-16

Configuring Startup Network Settings 3-17

Configuring Security on the Cisco Unified IP Phone 3-17

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Contents

CHAPTER

4 Configuring Settings on the Cisco Unified IP Phone 4-1

Configuration Menus on the Cisco Unified IP Phones 7906G and 7911G 4-1

Displaying a Configuration Menu 4-2
Unlocking and Locking Options 4-4
Editing the Values of an Option Setting 4-5

Overview of Options Configurable from a Phone 4-6

Network Configuration Menu 4-7

Device Configuration Menu 4-15

CallManager Configuration Menu 4-15
SIP Configuration Menu (SIP Phones Only) 4-18

SIP General Configuration Menu 4-18

Line Settings Menu 4-20
Call Preferences Menu (SIP Phones Only) 4-21
HTTP Configuration Menu 4-22
Locale Configuration Menu 4-24

CHAPTER

UI Configuration Menu 4-25
Media Configuration Menu 4-28
NTP Configuration Menu (SIP Phones Only) 4-29
Ethernet Configuration Menu 4-31
Security Configuration Menu 4-32
QoS Configuration Menu 4-33
Network Configuration 4-34

Security Configuration Menu 4-38

CTL File Screen 4-40
Trust List Menu 4-42

802.1X Authentication and Status 4-43

5 Configuring Features, Templates, Services, and Users 5-1

Telephony Features Available for the Cisco Unified IP Phone 5-2

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Configuring Corporate and Personal Directories 5-23

Configuring Corporate Directories 5-23
Configuring Personal Directory 5-24

Modifying Phone Button Templates 5-24

Configuring Softkey Templates 5-25

Setting Up Services 5-25

Adding Users to Cisco Unified Communications Manager 5-26

Managing the User Options Web Pages 5-27

Giving Users Access to the User Options Web Pages 5-27
Specifying Options that Appear on the User Options Web Pages 5-28

Specifying Options that Appear on the User Options Web Pages 5-29

CHAPTER

CHAPTER

6 Customizing the Cisco Unified IP Phone 6-1

Customizing and Modifying Configuration Files 6-1

Creating Custom Phone Rings 6-2

Ringlist.xml File Format Requirements 6-2
PCM File Requirements for Custom Ring Types 6-3
Configuring a Custom Phone Ring 6-4

Creating Custom Background Images 6-5

List.xml File Format Requirements 6-5
PNG File Requirements for Custom Background Images 6-6
Configuring a Custom Background Image 6-7

Configuring Wideband Codec 6-8

7 Viewing Model Information, Status, and Statistics on the

Cisco Unified IP Phone

7-1

Model Information Screen 7-2

Status Menu 7-3

Status Messages Screen 7-4

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Network Statistics Screen 7-13
Firmware Versions Screen 7-15
Call Statistics Screen 7-16

CHAPTER

CHAPTER

8 Monitoring the Cisco Unified IP Phone Remotely 8-1

Accessing the Web Page for a Phone 8-2

Disabling and Enabling Web Page Access 8-4

Device Information 8-4

Network Configuration 8-6

Network Statistics 8-11

Device Logs 8-14

Streaming Statistics 8-15

9 Troubleshooting and Maintenance 9-1

Resolving Startup Problems 9-2

Symptom: The Cisco Unified IP Phone Does Not Go Through its Normal
Startup Process

9-2

Symptom: The Cisco Unified IP Phone Does Not Register with
Cisco Unified Communications Manager

9-3

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Identifying Error Messages 9-4

Registering the Phone with Cisco Unified Communications

Manager

9-4

Checking Network Connectivity 9-4

Verifying TFTP Server Settings 9-5

Verifying IP Addressing and Routing 9-5

Verifying DNS Settings 9-6

Verifying Cisco Unified Communications Manager Settings 9-6

Cisco Unified Communications Manager and TFTP Services Are Not

Running

9-6

Creating a New Configuration File 9-7

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Registering the Phone with Cisco Unified Communications

Manager

Cisco Unified IP Phone Resets Unexpectedly 9-9

Verifying Physical Connection 9-9
Identifying Intermittent Network Outages 9-9
Verifying DHCP Settings 9-10
Checking Static IP Address Settings 9-10
Verifying Voice VLAN Configuration 9-10
Verifying that the Phones Have Not Been Intentionally Reset 9-11
Eliminating DNS or Other Connectivity Errors 9-11
Checking Power Connection (SIP Phones Only) 9-12

Troubleshooting Cisco Unified IP Phone Security 9-12

9-8

APPENDIX

General Troubleshooting Tips 9-16

Resetting or Restoring the Cisco Unified IP Phone 9-22

Performing a Basic Reset 9-22
Performing a Factory Reset 9-23

Using the Quality Report Tool 9-25

Monitoring the Voice Quality of Calls 9-25

Using Voice Quality Metrics 9-26
Troubleshooting Tips 9-27

Where to Go for More Troubleshooting Information 9-29

Cleaning the Cisco Unified IP Phone 9-29

A Providing Information to Users A-1

How Users Obtain Support for the Cisco Unified IP Phone A-1

Giving Users Access to the User Options Web Pages A-2

How Users Get Copies of Cisco Unified IP Phone Manuals A-2

How Users Subscribe to Services and Configure Phone Features A-3

How Users Access a Voice Messaging System A-3

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How Users Configure Personal Directory Entries A-4

Applying the Cisco Unified IP Phone Address Book Synchronizer A-4

APPENDIX

APPENDIX

APPENDIX

I

NDEX

B Feature Support by Protocol for Cisco Unified IP Phone 7906G and 7911G B-1

C Supporting International Users C-1

D Technical Specifications D-1

Physical and Operating Environment Specifications D-1

Cable Specifications D-2

Network and Access Port Pinouts D-3

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Overview

Preface

Cisco Unified IP Phone 7906G and 7911G Administration Guide for Cisco
Unified Communications Manager 6.0 provides the information you need to

understand, install, configure, manage, and troubleshoot the
Cisco Unified IP Phones 7906G and 7911G in a Voice-over-IP (VoIP) network.

Audience

Because of the complexity of a Unified Communications network, this guide does
not provide complete and detailed information for procedures that you need to
perform in Cisco Unified Communications Manager (formerly Cisco Unified
CallManager) or other network devices. See the “Related Documentation” section

on page xv for a list of related documentation.

Network engineers, system administrators, or telecom engineers should review
this guide to learn the steps required to properly set up the
Cisco Unified IP Phones 7906G and 7911G on the network.

The tasks described are administration-level tasks and are not intended for
end-users of the phones. Many of the tasks involve configuring network settings
and affect the phone’s ability to function in the network.

Because of the close interaction between the Cisco Unified IP Phone and
Cisco Unified Communications Manager, many of the tasks in this manual
require familiarity with Cisco Unified Communications Manager.

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xiii

Organization

Organization

This manual is organized as follows:

Preface

Chapter 1, “An Overview of the
Cisco Unified IP Phone”

Chapter 2, “Preparing to Install the
Cisco Unified IP Phone on Your Network”

Chapter 3, “Setting Up the
Cisco Unified IP Phone”

Chapter 4, “Configuring Settings on the
Cisco Unified IP Phone”

Chapter 5, “Configuring Features, Templates,
Services, and Users”

Chapter 6, “Customizing the
Cisco Unified IP Phone”

Provides a conceptual overview and description of
the Cisco Unified IP Phone

Describes how the Cisco Unified IP Phone
interacts with other key Unified Communications
components, and provides an overview of the tasks
required prior to installation

Describes how to properly and safely install and
configure the Cisco Unified IP Phone on your
network

Describes how to configure network settings,
verify status, and make global changes to the
Cisco Unified IP Phone

Provides an overview of procedures for
configuring telephony features, configuring
directories, configuring phone button and softkey
templates, setting up services, and adding users to
Cisco Unified Communications Manager

Explains how to customize phone ring sounds,
background images, and the phone idle display at
your site

Chapter 7, “Viewing Model Information, Status,
and Statistics on the Cisco Unified IP Phone”

Chapter 8, “Monitoring the Cisco Unified IP
Phone Remotely”

Chapter 9, “Troubleshooting and Maintenance” Provides tips for troubleshooting the

Appendix A, “Providing Information to Users” Provides suggestions for setting up a website for

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Explains how to view model information, status
messages, network statistics, and firmware
information from the Cisco Unified IP Phone

Explains how to obtain status information about
the phone using the phone’s web page

Cisco Unified IP Phone

providing users with important information about
their Cisco Unified IP Phones

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Preface

Related Documentation

Appendix B, “Feature Support by Protocol for
Cisco Unified IP Phone 7906G and 7911G”

Provides information about feature support for the
Cisco Unified IP Phone using the SCCP or SIP
protocol

Appendix C, “Supporting International Users” Provides information about setting up phones in

non-English environments

Appendix D, “Technical Specifications” Provides technical specifications of the

Cisco Unified IP Phone

Related Documentation

For more information about Cisco Unified IP Phones or
Cisco Unified Communications Manager, refer to the following publications:

Cisco Unified IP Phones 7906G and 7911G

These publications are available at the following URL:

http://www.cisco.com/en/US/products/hw/phones/ps379/tsd_products_support
_series_home.html

• Cisco Unified IP Phone 7906G Installation Guide

• Cisco Unified IP Phone 7911G Installation Guide

• Cisco Unified IP Phone 7906G and 7911G Phone Guide

• Cisco Unified IP Phone 7911G Feature Enhancements

• Cisco Unified IP Phone Features A–Z

• Cisco Unified IP Phone 7911G for Cisco Unified Communications Manager

4.2

• Regulatory Compliance and Safety Information for the Cisco Unified IP

Phone 7900 Series

• Installing the Universal Wall Mount Kit for the Cisco Unified IP Phone

Cisco Unified Communications Manager Administration

These publications are available at the following URL:

http://www.cisco.com/en/US/products/sw/voicesw/ps556/tsd_products_support_
series_home.html

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Obtaining Documentation, Obtaining Support, and Security Guidelines

• Cisco Unified Communications Manager Administration Guide

• Cisco Unified Communications Manager System Guide

• Cisco Unified Communications Manager Security Guide

• Cisco Unified Communications Manager Serviceability Administration

Guide

• Cisco Unified Communications Manager Serviceability System Guide

• Cisco Unified Communications Manager Features and Services Guide

• Cisco Unified Communications Manager Bulk Administration Guide

• Cisco Unified Communications Manager Troubleshooting Guide

• Installing and Configuring the Cisco Customer Directory Configuration

Plugin

• Cisco Unified Communications Platform Administration Guide

Preface

• Cisco Unified Communications Manager Compatibility Matrix

Obtaining Documentation, Obtaining Support, and
Security Guidelines

For information about obtaining documentation, obtaining support, providing
documentation feedback, security guidelines, and recommended aliases and
general Cisco documents, see the monthly What’s New in Cisco Product
Documentation, which also lists all new and revised Cisco technical
documentation, at:

http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html

Cisco Product Security Overview

This product contains cryptographic features and is subject to United States and
local country laws governing import, export, transfer and use. Delivery of Cisco
cryptographic products does not imply third-party authority to import, export,
distribute or use encryption. Importers, exporters, distributors and users are

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Preface

responsible for compliance with U.S. and local country laws. By using this
product you agree to comply with applicable laws and regulations. If you are
unable to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found
at: http://www.cisco.com/wwl/export/crypto/tool/stqrg.html. If you require
further assistance please contact us by sending email to [e-mail].

Document Conventions

This document uses the following conventions:

Convention Description

boldface font Commands and keywords are in boldface.

Document Conventions

italic font Arguments for which you supply values are in italics.

[ ] Elements in square brackets are optional.

{ x | y | z } Alternative keywords are grouped in braces and separated by vertical bars.

[ x | y | z ] Optional alternative keywords are grouped in brackets and separated by

vertical bars.

string A nonquoted set of characters. Do not use quotation marks around the string

or the string will include the quotation marks.

screen font Terminal sessions and information the system displays are in screen font.

boldface screen font Information you must enter is in boldface screen font.

italic screen font Arguments for which you supply values are in italic screen font.

^ The symbol ^ represents the key labeled Control—for example, the key

combination ^D in a screen display means hold down the Control key while
you press the D key.

< > Nonprinting characters, such as passwords are in angle brackets.

Note Means reader take note. Notes contain helpful suggestions or references to

material not covered in the publication.

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Document Conventions

Caution Means reader be careful. In this situation, you might do something that could

Preface

result in equipment damage or loss of data.

Warning

Means danger. You are in a situation that could cause bodily injury. Before you
work on any equipment, be aware of the hazards involved with electrical
circuitry and be familiar with standard practices for preventing accidents.

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CHAPTER

1

An Overview of the
Cisco Unified IP Phone

The Cisco Unified IP Phones 7906G and 7911G provide voice communication
over an Internet Protocol (IP) network. It functions much like a standard digital
business telephone, allowing you to place and receive phone calls and to access
features such as mute, hold, transfer, and speed dial. In addition, because the
phone is connected to your data network, it offers enhanced productivity features,
including access to network information, XML applications, and customizeable
features.

The Cisco Unified IP Phone, like other network devices, must be configured and
managed. The phone encodes G.711a, G.711µ, G.729a, G.729ab, G.728/iLBC,
and decodes all variants of G.711, G.728/iLBC, and G.729. The phone also
supports wideband (16bits, 16kHz) audio.

This chapter includes the following topics:

• Understanding the Cisco Unified IP Phones 7906G and 7911G, page 1-2

• What Networking Protocols Are Used?, page 1-5

• What Features are Supported?, page 1-9

• Understanding Security Features for Cisco Unified IP Phones, page 1-12

• Overview of Configuring and Installing Cisco Unified IP Phones, page 1-26

Caution Using a cell, mobile, or GSM phone, or two-way radio in close proximity to a

Cisco Unified IP Phone might cause interference. For more information, refer to
the manufacturer documentation of the interfering device.

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1-1

Chapter 1 An Overview of the Cisco Unified IP Phone

Understanding the Cisco Unified IP Phones 7906G and 7911G

Understanding the Cisco Unified IP Phones 7906G
and 7911G

The Cisco Unified IP Phones 7906G and 7911G are basic IP phone designed for
cubicles, classrooms, factory floors, warehouses, lobbies, and any other location
where the phone either complements the user’s set of communication devices or
is seldom used. The Cisco Unified IP Phones 7906G and 7911G:

• Provides a graphical display with dynamic softkeys, icons, and scrollable

directories for easy access to a core set of business features

• Supports up to six calls on one directory number

• Supports inline power for both Cisco inline power or IEEE 802.3af Power

over Ethernet

• Supports enhanced security features including:

–

Manufacturing and field installable certificates

–

Secure Media and Signaling

–

Authenticated Configuration

• Supports enhanced calling features plus audio and text XML applications

• Includes an integrated 10/100 Mbit Ethernet switch for connecting a PC,

thereby preserving the advantage of one cable pull per location (applies to Cisco
Unified IP Phone 7911G only)

Figure 1-1 shows the main components of the Cisco Unified IP Phones 7906G

and 7911G.

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Chapter 1 An Overview of the Cisco Unified IP Phone

Understanding the Cisco Unified IP Phones 7906G and 7911G

Figure 1-1 Cisco Unified IP Phones 7906G and 7911G

1 2

9

8

3

4

5

6

7

10

91031

1 Phone screen Displays phone features such as phone number, call status, and

softkeys.

2 Cisco Unified IP Phone

Indicates your Cisco Unified IP Phone model series.

series

3 Softkeys Each softkey activates a softkey option displayed on your phone

screen

4 Navigation button Allows you to scroll through menu items and highlight items. When

the phone is on-hook, displays your Speed Dials.

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Understanding the Cisco Unified IP Phones 7906G and 7911G

Chapter 1 An Overview of the Cisco Unified IP Phone

5 Applications menu

button

Displays the Applications menu that provides access to a voice
messaging system, phone logs and directories, settings, and
services.

6 Hold button Places the active call on hold, resumes a call on hold, and switches

between an active call and a call on hold.

7 Keypad Allows you to dial phone numbers, enter letters, and choose menu

items.

8 Volume button Controls the handset, headset, speaker, and ringer volume.

9 Handset Functions like a traditional handset. The light strip at the top of the

handset blinks when the phone rings and stays lit if there is a new
voice message (depending on your voice messaging system).

10 Footstand Allows the phone to stand at a convenient angle on a desk or table.

Also may be removed for wall mounting to mounting screws or to a
Cisco Unified IP Phone wall mount kit.

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Chapter 1 An Overview of the Cisco Unified IP Phone

What Networking Protocols Are Used?

What Networking Protocols Are Used?

Cisco Unified IP Phones support several industry-standard and Cisco networking
protocols required for voice communication. Tabl e 1 -1 provides an overview of
the supported networking protocols on the Cisco Unified IP Phones 7906G and
7911G.

Table 1-1 Supported Networking Protocols on the Cisco Unified IP Phone

Networking Protocol Purpose Usage Notes

Bootstrap Protocol
(BootP)

Cisco Discovery
Protocol (CDP)

Cisco Peer to Peer
Distribution Protocol
(CPPDP)

BootP enables a network device such
as the Cisco Unified IP Phone to
discover certain startup information,
such as its IP address.

CDP is a device-discovery protocol
that runs on all Cisco-manufactured
equipment.

Using CDP, a device can advertise its
existence to other devices and receive
information about other devices in
the network.

CPPDP is a Cisco proprietary
protocol used to form a peer to peer
hierarchy of devices. CPPDP is also
used to copy firmware or other files
from peer devices to neighboring
devices.

If you are using BootP to assign IP
addresses to the
Cisco Unified IP Phone, the BOOTP
Server option shows “Yes” in the
network configuration settings on the
phone.

The Cisco Unified IP Phone uses
CDP to communicate information
such as auxiliary VLAN ID, per port
power management details, and
Quality of Service (QoS) configuration
information with the Cisco Catalyst
switch.

CPPDP is used by the Peer Firmware
Sharing feature.

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Chapter 1 An Overview of the Cisco Unified IP Phone

What Networking Protocols Are Used?

Table 1-1 Supported Networking Protocols on the Cisco Unified IP Phone (continued)

Networking Protocol Purpose Usage Notes

Dynamic Host
Configuration Protocol
(DHCP)

DHCP dynamically allocates and
assigns an IP address to network
devices.

DHCP enables you to connect an IP
phone into the network and have the
phone become operational without
you needing to manually assign an IP
address or to configure additional
network parameters.

HyperText Transfer
Protocol (HTTP)

HTTP is the standard way of
transferring information and moving
documents across the Internet and the
World Wide Web.

IEEE 802.1X The IEEE 802.1X standard defines a

client-server-based access control
and authentication protocol that
restricts unauthorized clients from
connecting to a LAN through
publicly accessible ports.

Until the client is authenticated,

802.1X access control allows only
Extensible Authentication Protocol
over LAN (EAPOL) traffic through
the port to which the client is
connected. After authentication is
successful, normal traffic can pass
through the port.

DHCP is enabled by default. If
disabled, you must manually
configure the IP address, subnet
mask, gateway, and a TFTP server on
each phone locally.

Cisco recommends that you use
DHCP custom option 150. With this
method, you configure the TFTP
server IP address as the option value.
For additional information about
DHCP configurations, refer to the
“Cisco TFTP” chapter in the

Cisco Unified Communications
Manager System Guide.

The Cisco Unified IP Phones use
HTTP for the XML services and for
troubleshooting purposes.

The Cisco Unified IP Phone
implements the IEEE 802.1X
standard by providing support for the
EAP-MD5 option for 802.1X
authentication.

When 802.1X authentication is
enabled on the phone, you should
disable the PC port and voice VLAN.
See the “Supporting 802.1X

Authentication on Cisco Unified IP
Phones” for additional information.

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Chapter 1 An Overview of the Cisco Unified IP Phone

What Networking Protocols Are Used?

Table 1-1 Supported Networking Protocols on the Cisco Unified IP Phone (continued)

Networking Protocol Purpose Usage Notes

Internet Protocol (IP) IP is a messaging protocol that

addresses and sends packets across
the network.

Real-Time Transport
Protocol (RTP)

RTP is a standard protocol for
transporting real-time data, such as
interactive voice and video, over data
networks.

Real-Time Control
Protocol (RTCP

RTCP works with RTP to provide
QoS data (such as jitter, latency, and
round trip delay) on RTP streams.

To communicate using IP, network
devices must have an assigned IP
address, subnet, and gateway.

IP addresses, subnets, and gateways
identifications are automatically
assigned if you are using the
Cisco Unified IP Phone with
Dynamic Host Configuration
Protocol (DHCP). If you are not
using DHCP, you must manually
assign these properties to each phone
locally.

Cisco Unified IP Phones use the RTP
protocol to send and receive
real-time voice traffic from other
phones and gateways.

RTCP is disabled by default, but you
can enable it on a per phone basis
using
Cisco Unified Communications
Manager. For more information, see
the “Network Configuration” section

on page 4-34.

Secure Real-Time
Transport Protocol
(SRTP)

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SRTP is available in addition to RTP.
SRTP adds security by encrypting
media streams during data transport.

Cisco Unified IP Phone 7906G and 7911G for Cisco Unified Communications Manager 6.0

For SRTP to work, the phone or
phones being called must also
support SRTP or else those phones
cannot decrypt the secure media
stream.

1-7

Chapter 1 An Overview of the Cisco Unified IP Phone

What Networking Protocols Are Used?

Table 1-1 Supported Networking Protocols on the Cisco Unified IP Phone (continued)

Networking Protocol Purpose Usage Notes

Session Initiation
Protocol (SIP)

Skinny Client Control
Protocol (SCCP)

Session Description
Protocol (SDP)

SIP is the Internet Engineering Task
Force (IETF) standard for
multimedia conferencing over IP. SIP
is an ASCII-based application-layer
control protocol (defined in
RFC 3261) that can be used to
establish, maintain, and terminate
calls between two or more endpoints.

SCCP includes a messaging set that
allows communications between call
control servers and endpoint clients
such as IP Phones. SCCP is
proprietary to Cisco Systems.

SDP is the portion of the SIP protocol
that determines which parameters are
available during a connection
between two endpoints. Conferences
are established using only the SDP
capabilities that are supported by all
endpoints in the conference.

Like other VoIP protocols, SIP is
designed to address the functions of
signaling and session management
within a packet telephony network.
Signaling allows call information to
be carried across network
boundaries. Session management
provides the ability to control the
attributes of an end-to-end call.

You can configure the Cisco
Unified IP Phone to use either SIP or
Skinny Client Control Protocol
(SCCP).

Cisco Unified IP Phones use SCCP
for call control. You can configure
the Cisco Unified IP Phone to use
either SCCP or Session Initiation
Protocol (SIP).

SDP capabilities, such as codec
types, DTMF detection, and comfort
noise, are normally configured on a
global basis by Cisco Unified
Communications Manager or Media
Gateway in operation. Some SIP
endpoints may allow these
parameters to be configured on the
endpoint itself.

Transmission Control
Protocol (TCP)

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TCP is a connection-oriented
transport protocol.

1-8

Cisco Unified IP Phones use TCP to
connect to
Cisco Unified Communications
Manager and to access XML
services.

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Chapter 1 An Overview of the Cisco Unified IP Phone

What Features are Supported?

Table 1-1 Supported Networking Protocols on the Cisco Unified IP Phone (continued)

Networking Protocol Purpose Usage Notes

Transport Layer
Security (TLS)

Trivial File Transfer
Protocol (TFTP)

User Datagram Protocol
(UDP)

Related Topics

TLS is a standard protocol for
securing and authenticating
communications.

When security is implemented,
Cisco Unified IP Phones use the TLS
protocol when securely registering
with Cisco Unified Communications
Manager.

TFTP allows you to transfer files
over the network.

On the Cisco Unified IP Phone,
TFTP enables you to obtain a
configuration file specific to the
phone type.

TFTP requires a TFTP server in your
network, which can be automatically
identified from the DHCP server. If
more than one TFTP server is
running in your network, you must
manually assign a TFTP server to
each phone locally.

UDP is a connectionless messaging
protocol for delivery of data packets.

• Understanding Interactions with Other Cisco Unified Communications

Cisco Unified IP Phones receive and
process UDP messages.

Products, page 2-2

• Understanding the Phone Startup Process, page 2-8

• Network Configuration Menu, page 4-7

What Features are Supported?

The Cisco Unified IP Phones 7906G and 7911G function much like traditional
analog phones, allowing you to place and receive telephone calls. In addition to
traditional telephony features, each Cisco IP Phone includes features that enable
you to administer and monitor the phone as a network device.

This section includes the following topics:

• Feature Overview, page 1-10

• Configuring Telephony Features, page 1-11

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1-9

What Features are Supported?

• Configuring Network Parameters Using the Cisco Unified IP Phone,

page 1-11

• Providing Users with Feature Information, page 1-12

Feature Overview

Cisco Unified IP Phones provide core business features, such as call forwarding
and transferring, redialing, speed dialing, conference calling, and voice
messaging system access. Cisco Unified IP phones also provide a variety of other
features. For an overview of the telephony features that the
Cisco Unified IP Phone supports, see the “Telephony Features Available for the

Cisco Unified IP Phone” section on page 5-2.

As with other network devices, you must configure Cisco Unified IP Phones to
prepare them to access Cisco Unified Communications Manager and the rest of
the IP network. Using DHCP, you have fewer settings to configure on a phone, but
if your network requires it, you can manually configure an IP address, TFTP
server, and subnet mask. For instructions on configuring the network settings on
the Cisco Unified IP Phones, see Chapter 4, “Configuring Settings on the

Cisco Unified IP Phone.”

Chapter 1 An Overview of the Cisco Unified IP Phone

The Cisco Unified IP Phone can interact with other services and devices on your
IP network to provide enhanced functionality. For example, you can integrate the
Cisco Unified IP Phones with the corporate Lightweight Directory Access
Protocol 3 (LDAP3) standard directory to enable users to search for co-workers
contact information directly from their IP phones. Or, you can also use XML to
enable users to access information such as weather, stocks, quote of the day, and
other web-based information. For information about configuring such services,
see the “Configuring Corporate and Personal Directories” section on page 5-23
and the “Setting Up Services” section on page 5-25.

Finally, because the Cisco Unified IP Phone is a network device, you can obtain
detailed status information from it directly. This information can assist you with
troubleshooting any problems users might encounter when using their IP phones.
See Chapter 7, “Viewing Model Information, Status, and Statistics on the

Cisco Unified IP Phone,” for more information.

Related Topics

• Configuring Settings on the Cisco Unified IP Phone, page 4-1

• Configuring Features, Templates, Services, and Users, page 5-1

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Chapter 1 An Overview of the Cisco Unified IP Phone

• Troubleshooting and Maintenance, page 9-1

Configuring Telephony Features

You can modify certain settings for the Cisco Unified IP Phone from the
Cisco Unified Communications Manager Administration application. Use this
web-based application to set up phone registration criteria and calling search
spaces, to configure corporate directories and services, and to modify phone
button templates, among other tasks. See the “Telephony Features Available for

the Cisco Unified IP Phone” section on page 5-2 and

Cisco Unified Communications Manager Administration Guide for additional
information.

For more information about the Cisco Unified Communications Manager
Administration application, refer to Cisco Unified Communications Manager
documentation, including Cisco Unified Communications Manager System
Guide. You can also use the context-sensitive help available within the application
for guidance.

What Features are Supported?

You can access the complete Cisco Unified Communications Manager
documentation suite at this location:

http://www.cisco.com/en/US/products/sw/voicesw/ps556/tsd_products_support_
series_home.html

Related Topic

• Telephony Features Available for the Cisco Unified IP Phone, page 5-2

Configuring Network Parameters Using the Cisco Unified IP
Phone

You can configure parameters such as DHCP, TFTP, and IP settings on the phone
itself. You can also obtain statistics about a call or firmware versions on the
phone.

For more information about configuring features and viewing statistics from the
phone, see Chapter 4, “Configuring Settings on the Cisco Unified IP Phone,” and
see Chapter 7, “Viewing Model Information, Status, and Statistics on the

Cisco Unified IP Phone.”

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Chapter 1 An Overview of the Cisco Unified IP Phone

Understanding Security Features for Cisco Unified IP Phones

Providing Users with Feature Information

If you are a system administrator, you are likely the primary source of information
for Cisco Unified IP Phone users in your network or company. To ensure that you
distribute the most current feature and procedural information, familiarize
yourself with Cisco Unified IP Phone documentation. Make sure to visit the
Cisco Unified IP Phone web site:

http://www.cisco.com/en/US/products/hw/phones/ps379/tsd_products_support_s
eries_home.html

From this site, you can view and order various user guides, including wallet cards.
For complete ordering information, see the “Document Conventions” section on
page xiv.

In addition to providing users with documentation, it is important to inform them
of available Cisco Unified IP Phone features—including features specific to your
company or network—and of how to access and customize those features, if
appropriate.

For a summary of some of the key information that phone users need their system
administrators to provide, see Appendix A, “Providing Information to Users.”

Understanding Security Features for Cisco Unified IP
Phones

Implementing security in the Cisco Unified Communications Manager system
prevents identity theft of the phone and Cisco Unified Communications Manager
server, prevents data tampering, and prevents call signaling and media stream
tampering.

To alleviate these threats, the Cisco Unified Communications network establishes
and maintains authenticated and encrypted communication streams between a
phone and the server, digitally signs files before they are transferred to a phone
and encrypts media streams between Cisco Unified IP phones.

If you configure security-related settings in Cisco Unified Communications
Manager Administration, the phone configuration file will contain sensitive
information. To ensure the privacy of a configuration file, you must configure it

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