Zebra Workforce Connect: Voice Client Deploying VoWLAN Over WiNG5 Networks Best Practices Guide
DEPLOYING VOWLAN
OVER WiNG5
NETWORKS
BEST PRACTICES GUIDE
DEPLOYING VOWLAN OVER WING5 NETWORKS
BEST PRACTICES GUIDE
MN001150A02
Rev. A
May 2015
ii Deploying VOWLAN Over WiNG5 Networks Best Practices Guide
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Revision History
Changes to the original guide are listed below:
Change Date Description
-A01 Rev. A 12/2014 Initial release.
-A02 Rev. A 5/2015 Rebranding.
iii
iv Deploying VOWLAN Over WiNG5 Networks Best Practices Guide
TABLE OF CONTENTS
Revision History.............................................................................................................................. iii
About This Guide
Introduction..................................................................................................................................... vii
Chapter Descriptions ...................................................................................................................... vii
Notational Conventions................................................................................................................... vii
Related Documents ........................................................................................................................ viii
Service Information......................................................................................................................... viii
Chapter 1: Introduction
Coverage ....................................................................................................................................... 1-1
QoS ................................................................................................................................................ 1-3
Security .......................................................................................................................................... 1-4
General Wireless Network Best Practices ..................................................................................... 1-5
General Recommendations ..................................................................................................... 1-6
Chapter 2: Quality of Service
Radio-QoS Policy ........................................................................................................................... 2-1
WMM Tab - Voice Access ........................................................................................................ 2-2
Admission Control Tab - Voice Access .................................................................................... 2-2
Multimedia Optimizations Tab - Accelerated Multicast ............................................................ 2-3
WLAN QoS Policy .......................................................................................................................... 2-4
WMM Tab - Settings Section ................................................................................................... 2-4
WMM Tab - Voice Access Section ........................................................................................... 2-5
Chapter 3: Smart RF
Basic Settings .......................................................................................................................... 3-1
Power Settings ......................................................................................................................... 3-2
Channel Settings ...................................................................................................................... 3-2
Scanning Configuration ............................................................................................................ 3-3
vi Deploying VOWLAN Over WiNG5 Networks Best Practices Guide
Scanning Configuration for 5 GHz ........................................................................................... 3-3
Scanning Configuration for 2.4 GHz ........................................................................................ 3-4
Chapter 4: WLAN
WLAN Policy .................................................................................................................................. 4-1
Basic Configuration .................................................................................................................. 4-1
Configuring Security ...................................................................................................................... 4-3
Select Authentication ............................................................................................................... 4-3
Select Encryption ..................................................................................................................... 4-3
Configuring Firewall Support ......................................................................................................... 4-4
IP Firewall Rules ...................................................................................................................... 4-4
MAC Firewall Rules ................................................................................................................. 4-4
Configuring Client Settings ...................................................................................................... 4-4
ABOUT THIS GUIDE
Introduction
This guide provides best practices when deploying VoWLAN over a WiNG5 wireless network.
NOTE Screens and windows pictured in this guide are samples and can differ from actual screens.
Chapter Descriptions
Topics covered in this guide are as follows:
•
Chapter 1, Introduction provides information for deploying VOWLAN over a WiNG5 wireless network.
•
Chapter 2, Quality of Service provides information for setting up QoS policies.
•
Chapter 3, Smart RF provides information for setting up Smart RF policies.
•
Chapter 4, WLAN provides information for setting up WLAN settings.
Notational Conventions
The following conventions are used in this document:
•
Italics are used to highlight the following:
• Chapters and sections in this and related documents
• Icons on a screen.
•
Bold text is used to highlight the following:
• Dialog box, window, and screen names
• Drop-down list and list box names
• Check box and radio button names
• Key names on a keypad
• Button names on a screen.
viii Deploying VOWLAN Over WiNG5 Networks Best Practices Guide
•
Bullets (•) indicate:
• Action items
• Lists of alternatives
• Lists of required steps that are not necessarily sequential
•
Sequential lists (e.g., those that describe step-by-step procedures) appear as numbered lists.
Related Documents
•
Cisco CUCM Administrator Configuration Guide, p/n MN001147A01
•
Cisco CME Technical Guide, p/n MN001148A01
For the latest version of this guide and all guides, go to:
Service Information
If the user has a problem with the equipment, contact Global Customer Support in the region. Contact
information is available at: http://www.symbol.com/support.
When contacting support, please have the following information available:
•
Serial number of the unit (found on manufacturing label)
•
Model number or product name (found on manufacturing label)
•
Software type and version number
We respond to calls by email or telephone within the time limits set forth in support agreements.
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shipment if the approved shipping container is not used. Shipping the units improperly can possibly void the
warranty.
If the device was purchased from a business partner, contact that business partner for support.
http://www.symbol.com/support.
CHAPTER 1 INTRODUCTION
Voice over Wireless LAN (VoWLAN) delivers the functionality of an enterprise telephone system in a wireless
handset. The handset is a wireless client device, and it shares the wireless network with laptops and other
hand-held devices. For enterprise use, the handset is functionally equivalent to a wired desk phone, giving
end-users all the features they are used to in a wired office telephone. The benefits of VoWLAN can result in
substantial cost savings, leveraging Wi-Fi infrastructure and eliminating recurring charges associated with the
use of cell phones, while significantly improving employee mobility.
There are two types of mobility, being mobile and 100%-connected mobility. To help explain this, think of the
marketing manager working on a presentation and saving it on a network share. He later wants to give that
presentation in the boardroom. If he picks up his laptop, closes the lid, and walks to the boardroom, opens the
laptop, connects to the wireless network, and gives his presentation - that is being mobile. His laptop may have
disconnected from the wireless network in between his office and the boardroom, but he never noticed. The
same manager starting a call on his VoWLAN handset while in his of fice, remaining on that call as he walked to
the elevator, traveled up several floors, and then walked to the boardroom – that is true mobility. If his V oWLAN
handset had disconnected during that call, he would have noticed.
True mobility and enterprise-grade VoWLAN requires wireless networks designed to provide the highest audio
quality throughout the facility. VoWLAN handsets require continuous, reliable connections as a user moves
throughout the coverage area. Voice applications have a low tolerance for network errors and delays,
deteriorating with just a few hundred milliseconds of delay or 1% of packet loss.
Coverage
Most data communication protocols provide a mechanism for retransmission of lost or corrupted packets, thus
delays caused by retransmissions are not discernable. The real-time nature of a telephone conversation
requires that voice packets be received correctly within 100ms of transmission. Lost or corrupted packets are
discarded after limited retries. In areas of inadequate wireless coverage, the audio quality of real-time voice
will suffer.
Moving handsets make the determination to roam in less than half the overlapping coverage area from a
neighboring access point. That Assessment Area must be large enough to allow the handset time to discover,
associate with, and connect to the next access point before the signal on the currently connected access point
becomes too weak. Understanding what impacts RF coverage, cell size, and overlap is essential to properly
design and configure a wireless network for voice usage.
The usable cell size of an access point is dictated by the frequency, signal power level, minimum data rate,
number of channels used, and objects that attenuate the signal. A properly designed wireless network
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