Specifications
Table Of Contents
- Cisco Unified Wireless IP Phone 7921G Administration Guide for Cisco Unified CallManager Release 4.1, 4.2, 5.0 and Later
- Contents
- Preface
- An Overview of the Cisco Unified Wireless IP Phone 7921G
- An Overview of the Voice Over IP Wireless Network
- Understanding the Wireless LAN
- Components of the VoIP Wireless Network
- Voice Over IP Wireless Network Configuration
- Site Survey Verification
- Setting Up the Cisco Unified Wireless IP Phone 7921G
- Before You Begin
- Installing the Cisco Unified Wireless IP Phone 7921G
- Powering On the Cisco Unified Wireless IP Phone 7921G
- Understanding the Phone Startup Process
- Using the Cisco Unified Wireless IP Phone 7921G Web Pages
- Using the USB Connection for Initial Phone Configuration
- Updating Phones Remotely
- Configuring Network Profiles
- Configuring USB Settings
- Configuring Trace Settings
- Using System Settings
- Configuring Settings on the Cisco Unified Wireless IP Phone 7921G
- Accessing Network and Phone Settings
- Configuring Network Profile Settings
- Changing Phone Settings
- Configuring the Security Certificate on the Phone
- Changing the USB Configuration
- Configuring Features, Templates, Services, and Users
- Configuring Cisco Unified Wireless IP Phones in Cisco Unified CallManager
- Telephony Features Available for the Phone
- Specific Configuration Options for the Cisco Unified Wireless IP Phone 7921G
- Configuring Softkey Templates
- Modifying Phone Button Templates
- Setting Up Services
- Configuring Corporate and Personal Directories
- Adding Users to Cisco Unified CallManager
- Managing the User Options Web Pages
- Creating Custom Phone Rings
- Viewing Security, Device, Model, and Status Information on the Phone
- Monitoring the Cisco Unified Wireless IP Phone Remotely
- Troubleshooting the Cisco Unified Wireless IP Phone 7921G
- Resolving Startup and Connectivity Problems
- Resolving Voice Quality and Roaming Problems
- General Troubleshooting Information
- Erasing the Local Configuration
- Providing Information to Users By Using a Website
- Supporting International Users
- Physical and Operating Environment Specifications
- Checklist for Deploying the Cisco Unified Wireless IP Phone 7921G
- Index
Chapter 2 An Overview of the Voice Over IP Wireless Network
Components of the VoIP Wireless Network
2-26
Cisco Unified Wireless IP Phone 7921G Administration Guide for Cisco Unified CallManager Release 4.1, 4.2, 5.0
OL-10802-02
If DHCP is enabled in the network, the Cisco Unified Wireless IP Phone 7921G
uses the DHCP scope settings in the DHCP server to perform the phone
provisioning bootup process. You must configure the settings of the DHCP server
in the Cisco Unified
CallManager network.
The DHCP scope settings include the following:
• TFTP servers
• DNS server IP address (optional unless using host names)
• Pool and range of the subnet mask, IP address, and gateway
The priority of the DHCP settings for the TFTP server is unique to the
Cisco
Unified Wireless IP Phone 7921G, as shown in Table 2-5.
If DHCP is disabled, the Cisco Unified Wireless IP Phone 7921G uses the
following network settings in
Table 2-6 to perform the phone provisioning bootup
process. You must configure these static parameters for each Cisco Unified
Wireless IP
Phone 7921G.
Ta b l e 2-5 DHCP Settings Priority
Priority DHCP Settings
1st DHCP option 150
2nd DHCP option 66
3rd SIADDR
4th ciscoCM1
Ta b l e 2-6 Static IP Addresses When DHCP is Disabled
Static Setting Description
IP Address IP address, the unique identifier assigned by the
system administrator for the phone.
Subnet Mask Used to partition the IP address into a network
identifier and host identifier so TCP/IP can
distinguish between them.
Default Router 1 Identifies the gateway that provides connectivity to
the IP network beyond the subnet to which the phone
belongs.