Cisco Systems 71642 Introduction, Prerequisites, Executive Summary, Requirements Components Used

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Audio Problems

One−sided Audio

Choppy or Robotic Audio

Registration and Authentication Problems

Appendix A

AP and Antenna Placement

Interference and Multipath Distortion

Signal Attenuation

NetPro Discussion Forums − Featured Conversations

Related Information

Introduction

This document provides design considerations and deployment guidelines for the implementation of the Vocera® Badge Voice over WLAN (VoWLAN) technology on the Cisco Unified Wireless Network infrastructure.

Note: Support for Vocera products should be obtained directly from Vocera support channels. Cisco Technical Support is not trained to support Vocera−related issues.

This guide is a supplement to the Cisco Wireless LAN Controller Deployment Guide and only addresses the configuration parameters that are particular to Vocera VoWLAN devices in a lightweight architecture. Refer to Deploying Cisco 440X Series Wireless LAN Controllers for more information.

This document builds upon ideas and concepts presented in the Cisco IP Telephony Solution Reference Network Design (SRND) and the Cisco Wireless LAN SRND. Both of these SRNDs are available online at http://www.cisco.com/en/US/netsol/ns656/networking_solutions_program_home.html.

Prerequisites

Requirements

It is assumed that readers are familiar with the terms and concepts presented in the Cisco IP Telephony SRND and the Cisco Wireless LAN SRND. Both of these SRNDs are available online at http://www.cisco.com/en/US/netsol/ns656/networking_solutions_program_home.html.

Components Used

This document is not restricted to specific software and hardware versions.

Conventions

Refer to Cisco Technical Tips Conventions for more information on document conventions.

Executive Summary

This table summarizes the four key functions and how they behave within a Cisco Unified Wireless network.

Single

Controller

Controller−to−Controller

Layer 2 Roaming

Controller−to−Controller

Layer 3 Roaming

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Contents Document ID Deployment ScenariosExecutive Summary IntroductionPrerequisites Requirements Components UsedVocera Call Capacity Considerations Vocera SolutionVocera Badge Overview Vocera Communications Server CapacityVoceras Infrastructure Planning Architecture OverviewMulticast in an Lwapp Deployment Unicast−Multicast Delivery MethodMulticast−Multicast Delivery Method Lwapp Multicast−MulticastEnable PIM on an Interface Router and Switch Multicast ConfigurationEnable IP Multicast Routing Multicast Enhancements in Version 4.0.206.0 and Later Disable Switch Vlan Igmp SnoopingDeployment Scenarios Single Controller in Multicast−Multicast Mode Single Controller DeploymentMultiple Controller Layer 2 Deployment Multiple Controller Layer 3 DeploymentVoWLAN Deployments Ciscos Reccommendations Construction Methods and MaterialsInventory Security Mechanisms Supported Leap ConsiderationsNetwork Sizing Wireless Network InfrastructureVoice, Data and Vocera VLANs Badge Configuration Switch RecommendationsDeployments and Configuration Tune AutoRF for Your Environment ∙ How do I know if the tranmit power is too hot or too cold? Wireless Network Infrastructure Configuration Create InterfacesWireless−Specific Configuration Create the Vocera Voice InterfaceWlan Configuration Wlan ConfigurationConfigure Access Point Detail AP DetailConfigure the 802.11b/g Radio Wireless IP Telephony Verification Association, Authentication, and Registration Common Roaming Issues Badge Loses Voice Quality while RoamingOne−sided Audio Audio ProblemsRegistration and Authentication Problems Choppy or Robotic AudioAP and Antenna Placement Appendix aSignal Reflection Caused by a Wall Cisco Aironet 5959 Antenna Mounted to a Ceiling Signal−to−Noise Ratio SNR Interference and Multipath DistortionNetPro Discussion Forums − Featured Conversations Signal AttenuationRelated Information
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