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order to successfully implement and support the Cisco 7920, system administrators must become familiar with
all of these technology areas.
This document was created primarily for readers who have limited experience with one or more of the
products and technologies required to install and configure a Cisco 7920 IP Phone. It will also benefit readers
that have a great deal of experience in some of the areas but not others.
QoS is not covered in this document, because it is not required that you implement QoS to bring a Cisco 7920
online to place calls. The QoS (Quality of Service) Technical Support page contains links to several very good
documents about the implementation of QoS in VoIP environments.
This document also provides some troubleshooting guidelines. It is not intended to be a complete manual to
install, configure, or troubleshoot the Cisco 7920 or any of the other components that are used in this
document. The related documents that contain more detailed instructions are referenced in the subsequent
sections, as appropriate.
WLAN infrastructure devicessuch as the Cisco Aironet 350 Series Access Point (AP) or the Cisco Aironet
1200 Series APtreat the Cisco 7920 the same as any other wireless 802.11b client. Cisco CallManager treats
the Cisco 7920 like any other Cisco 7960 IP Phone. You can use the knowledge and skills that you already
have in these areas when you install, configure, and troubleshoot a Cisco 7920.
Prerequisites
Requirements
This document assumes that you have an operational Cisco CallManager 3.2 or later, a Catalyst switch that
supports 802.1Q VLANs, and a Cisco Secure ACS (if you are going to do Light Extensible Authentication
Protocol [LEAP]). It is also assumed that you have some experience with these products.
Though it is not required, it is helpful to confirmwith a PC or another wireless data clientthat your wireless
configuration can connect over the Cisco Aironet AP to an IP device on the other side of the AP.
Components Used
The information in this document is based on these software and hardware versions:
Cisco 7920 Wireless IP Phone•
Cisco 7960 IP Phone•
Cisco CallManager 3.3(3)•
Catalyst 2924 XL version 12.0(5)WC5a•
Cisco 2651 Router version 12.2(15)T•
Cisco 1200 Series AP version 12.2(13)JA4•
Cisco Secure ACS Release 3.2•
The information in this document was created from the devices in a specific lab environment. All of the
devices used in this document started with a cleared (default) configuration. If your network is live, make sure
that you understand the potential impact of any command.
Related Products
You can substitute any Catalyst Switch that supports 802.1Q trunking. If it is based on Cisco IOS® Software
(similar to a 2900 XL), then the configuration examples in this document should work. If it is based on
Catalyst OS, then you have to convert the examples as required.