C H A P T E R 1
Overview
This document begins by identifying the specific radio environmental values that are needed for a successful voice deployment.
Note Cisco offers a Cisco Aironet Wireless Site Survey class for technical individuals who will be performing site surveys for wireless LAN solutions. This white paper does not replace the information in the site survey class. Cisco recommends that wireless LAN survey technicians take the Aironet Wireless Site Survey class as a requisite. Cisco also recommends that technicians study the Cisco Wireless IP Phone 7920 Deployment Recommendations before studying this white paper.
There are two types of wireless LAN VoIP surveys:
•A survey performed with Wireless IP Telephony (WIPT) handsets
•A survey that simulates WIPT operation
Cisco recommends that, if possible, you install the VoIP network following AVVID design guidelines before surveying for a WIPT network.
Tip Click this link to browse to a library of AVVID design guides:
http://www.cisco.com/warp/public/779/largeent/it/ese/srnd.html
Recommendations for Successful VoIP Surveys
The most effective surveys are performed using Cisco access points and Cisco WIPT handsets on active calls through Cisco’s Call Manager. In the site survey, it is important that you test performance from the source to the end point and also from the end point to the source. For example, your WIPT site survey should use a wired VoIP phone (such as a Cisco 7960) in the core of the network to a WIPT (such as a Cisco 7920) handset with a live conversation going in both directions. The Cisco 7920 WIPT handset enables you to audibly monitor the quality of the call. Cisco also recommends that you use the customer’s actual handset configuration when performing the survey.
Cisco considers it necessary to
Site Survey Guide for Deploying Cisco 7920 IP Phones
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