Table Of Contents

Checklist for Deploying the Cisco Unified Wireless IP Phone 7921G

Configuring the Wireless Network

Configuration Tip for Cisco Airespace Access Points

Configuring QoS Policies

Access Point Configuration Settings

Controller Settings

Switch Configuration

Configuring the Cisco Unified Wireless IP Phone 7921G in Cisco Unified CallManager

Installing the Cisco Unified Wireless IP Phone 7921G

Checklist for Deploying the Cisco Unified Wireless IP Phone 7921G

---

The following topics provide an overview of procedures for adding Cisco Unified Wireless IP Phones to your network:

•Configuring the Wireless Network

•Configuring QoS Policies

•Configuring the Cisco Unified Wireless IP Phone 7921G in Cisco Unified CallManager

•Installing the Cisco Unified Wireless IP Phone 7921G

Configuring the Wireless Network

Table D-1 explains and provides references for many of the configuration activities for the Cisco Aironet Access Point, controller, and Ethernet switch.

---

Note When deploying the Cisco Unified Wireless IP Phone 7921G with World regulatory domain (CP-7921G-W-K9), you must enable the access points for world mode (802.11d). The world model phone gets the channels and power information from the access point.

---

Table D-1 Wireless Network Configuration Tasks 

Activity	Explanation	Reference
Check that the Cisco IOS version is the recommended version	•Under System Software, verify that Cisco IOS version 12.3(8)JA or later is running on the AP. •For the controller, use Version 4.0 and Cisco IOS version 12.3(8)JX or later.	Interacting with Cisco Unified Wireless Access Points, page 2-12
Configure a VLAN for voice	To isolate voice traffic and enable QoS, you need a separate voice VLAN on the access point and network switch.	Voice Quality in a Wireless Network, page 2-16 Cisco IOS Software Configuration Guide for Cisco Aironet Access Points, Cisco IOS Release 12.3(8)JA
Configure Service Set Identifier (SSID) for each VLAN	Identifier for a set of wireless devices to communicate with each other. Several access points can have the same SSID to support a group of wireless phones.	Interacting with Cisco Unified Wireless Access Points, page 2-12 Cisco IOS Software Configuration Guide for Cisco Aironet Access Points, Cisco IOS Release 12.3(8)JA
Configure QoS settings for VLANs	Create a QoS policy for the voice VLAN and assign a higher CoS to voice traffic. Enable the QoS element for wireless IP phones to provide channel utilization (QBSS) information to phones.	Voice Quality in a Wireless Network, page 2-16 Configuring QoS Policies Cisco IOS Software Configuration Guide for Cisco Aironet Access Points, Cisco IOS Release 12.3(8)JA
Enable ARP caching	Enable this option to ensure two-way audio. The access point has ARP caching disabled by default.	Cisco IOS Software Configuration Guide for Cisco Aironet Access Points, Cisco IOS Release 12.3(8)JA
Configure radio (802.11) settings	Data Rate—Set for11 Mbps or to the rate for the frequency band that you are using. Client Transmit Power—After a site survey, determine the appropriate power requirements and set a specific Client Transmit Power setting. The Cisco Unified Wireless IP Phone 7921G uses the same setting as the access point. Note If set for Max, the access point does not advertise Client Transmit Power setting.	Cisco IOS Software Configuration Guide for Cisco Aironet Access Points, Cisco IOS Release 12.3(8)JA Deployment Guidelines for the Cisco Unified Wireless IP Phone 7921G
Configure Security for the voice VLANs	Use one of these authentication and encryption options for the SSID that corresponds to the voice VLAN: •Open •Shared Key •EAP •Auto (AKM)	Choosing Authentication and Encryption Methods, page 2-21 Cisco IOS Software Configuration Guide for Cisco Aironet Access Points, Cisco IOS Release 12.3(8)JA

Configuration Tip for Cisco Airespace Access Points

If you are using EAP-FAST with Cisco Airespace technology, you must increase the EAP request (802.1x) timeout to at least 20 seconds to ensure that the phone gets the PAC credentials successfully.

To change the request timeout on the controller, follow these steps:

Procedure

---

Step 1 Use SSH or Telnet to access the Airespace controller or controllers.

Step 2 Enter config advanced eap request-timeout 20

Step 3 Enter save config

Step 4 Enter y to confirm.

---

Configuring QoS Policies

To ensure that voice traffic receives the highest priority in the WLAN and to place signaling traffic in a higher priority than data traffic, you need to make these changes to QoS policies and device settings.

Access Point Configuration Settings

For detailed information about configuring the Cisco Aironet Access Points, refer to this URL:

http://www.cisco.com/univercd/cc/td/doc/product/wireless/airo1200/accsspts/b1238ja/1238jasc/index.htm

On the IOS access points, add the following Classifications to your IOS Access Point QoS policy:

•DSCP Expedited Forwarding—COS Voice <10ms Latency (6)

Apply this policy to your voice VLAN for both incoming and outgoing traffic.

•DSCP Best Effort—COS Best Effort (0)

Apply this policy to your data or native VLAN for both incoming and outgoing traffic.

Under the Advanced tab, set the following:

•QoS Element for Wireless Phones—Enable.

•Dot11e—Enable.

•IGMP Snooping—Enable.

•AVVID Priority Mapping—Yes.

•WiFi Multimedia (WMM) on radio interfaces—Enabled

Controller Settings

For detailed information about configuring QoS policies for the controller, refer to these URLs:

•http://www.cisco.com/univercd/cc/td/doc/product/wireless/control/index.htm

•http://www.cisco.com/univercd/cc/td/doc/product/wireless/control/c44/ccfig40/index.htm

When using a controller, add the following QoS policies:

•Platinum (voice)—Apply this policy to your voice WLAN SSID/VLAN for both incoming and outgoing traffic.

•Silver (best effort)—Apply this policy to your data WLAN SSID/VLAN for both incoming and outgoing traffic.

•WLAN configuration screen for the voice WLAN SSID/VLAN—For the 7921G Phone Support field, check the AP CAC Limit checkbox to enable QoS Element for Wireless Phones (QBSS).

•General Controller configuration screen—Set Aggressive Load Balancing to Disabled.

Switch Configuration

To implement QoS in the connected Ethernet switch individual configurations will vary; however, you can use this example of QoS commands as a guide.

mls qos

mls qos map cos-dscp 0 8 16 24 34 46 48 56

mls qos map ip-prec-dscp 0 8 16 24 34 46 48 56

interface FastEthernet0/00

switchport access vlan 11

switchport mode access

switchport voice vlan 111

no ip address

mls qos trust dscp

wrr-queue cos-map 1 1

wrr-queue cos-map 2

wrr-queue cos-map 3 2 3 4 6 7

wrr-queue cos-map 4 5

priority queue out

spanning-tree portfast

---

Note When you are using U-APSD for power save, you must implement proper QoS policies on the access points and Ethernet switch.

---

Configuring the Cisco Unified Wireless IP Phone 7921G in Cisco Unified CallManager

Table D-2 provides an overview and checklist of configuration tasks for the Cisco Unified Wireless IP Phone 7921G in Cisco Unified CallManager Administration. The list presents a suggested order to guide you through the phone configuration process. Some tasks are optional, depending on your system and user needs. For detailed procedures and information, refer to the sources in the list.

Table D-2 Checklist for Configuring the Cisco Unified Wireless IP Phone 7921G in Cisco Unified CallManager 

Task	For More Information
1. Gather the following information about the phone: •MAC address •Name or user ID of phone user •Device pool •Calling search space and location information (if used) •Number of lines, associated directory numbers (DNs), and partitions to assign to the phone •Cisco Unified CallManager user to associate with the phone •Phone usage information that affects phone softkey template, phone features, IP Phone services, or phone applications	Refer to the Cisco Unified CallManager System Guide, Cisco Unified IP Phone chapter. See Telephony Features Available for the Phone, page 6-2.
2. Customize phone button templates (if required).	Refer to Cisco Unified CallManager Administration Guide, "Phone Button Template Configuration" chapter. See Modifying Phone Button Templates, page 6-18.
3. Add and configure the phone by completing these required fields in the Phone Configuration window: •Phone type •Description (user name or ID) •MAC address •Device pool •Partition •Calling Search Space •Security mode or profile (if applicable) •Product Specific Configuration •Softkey template (if customized)	Refer to the Cisco Unified CallManager Administration Guide, Cisco Unified IP Phone Configuration chapter. For information about Product Specific Configuration fields, refer to "I" Button Help in the Phone Configuration window.
4. Add and configure directory numbers (lines) on the phone by completing these required fields in the Directory Number Configuration window. •Directory number(s) •Partition •Multiple Calls and Call Waiting •Call Forwarding and Pickup (if used) •Voice Messaging (if used)	Refer to the Cisco Unified CallManager Administration Guide, Cisco Unified IP Phone Configuration chapter: "Adding a Directory Number" section "Creating a Cisco Unity Voice Mailbox" section. See Telephony Features Available for the Phone, page 6-2.
5. Customize softkey templates (optional).	Refer to the Cisco Unified CallManager Administration Guide, "Softkey Template Configuration" chapter. See Configuring Softkey Templates, page 6-16.
6. Configure speed-dial numbers (optional).	Refer to the Cisco Unified CallManager Administration Guide, Cisco Unified IP Phone Configuration chapter, "Configuring Speed-Dial Buttons" section.
7. Configure Cisco Unified IP Phone services and assign services (optional).	Refer to the Cisco Unified CallManager Administration Guide, Cisco Unified IP Phone Services Configuration chapter. See Setting Up Services, page 6-19.
8. Add user information by configuring required fields: (optional). •Name (last) •User ID •Password (for User Options web pages) •PIN (for use with Extension Mobility and Personal Directory	Refer to the Cisco Unified CallManager Administration Guide, Adding a New User chapter. See Adding Users to Cisco Unified CallManager, page 6-22.
9. Associate a user with a phone (optional).	Refer to the Cisco Unified CallManager Administration Guide, Adding a New User chapter, "Associating Devices to a User" section.

Installing the Cisco Unified Wireless IP Phone 7921G

Table D-3 provides an overview and checklist of installation tasks for the Cisco Unified Wireless IP Phone 7921G. The list presents a suggested order to guide you through the phone installation. Some tasks are optional, depending on your system and user needs. For detailed procedures and information, refer to the sources in the list.

Table D-3 Checklist for Installing the Cisco Unified Wireless IP Phone 7921G 

Task	For More Information
1. Assemble the phone components and charge the battery.	See Providing Power to the Phone, page 3-10.
2. Configure the network profile by using the USB cable and the Cisco Unified Wireless IP  Phone 7921G web pages.	See Using the Cisco Unified Wireless IP Phone 7921G Web Pages, page 4-1.
3. Configure the phone settings by using the Settings menu on the phone.	See Configuring Settings on the Cisco Unified Wireless IP Phone 7921G, page 5-1.
4. Power on the phone and monitor the phone startup process.	See Understanding the Phone Startup Process, page 3-26. See Resolving Startup and Connectivity Problems, page 9-1
5. Make calls with the wireless IP phone.	Refer to the Cisco Unified Wireless IP Phone 7921Guide. See Resolving Voice Quality and Roaming Problems, page 9-11
6. Provide information to end users about how to use their phones and how to configure their phone options.	See Appendix A, "Providing Information to Users By Using a Website."