Avaya 3616 Installation Manual
Wireless telephones
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Summary of Contents for Avaya 3616
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Page 1: Wireless Telephones
Installation Guide Deploying Avaya 3616, 3620, 3626, 3641, and 3645 Wireless Telephones October 2008 Octiober 2008... -
Page 2: Table Of Contents
Cisco Fast Secure Roaming (FSR) ..................14 Using Virtual LANs........................15 MAC Filtering and Authentication....................15 Firewalls and Traffic Filtering.......................15 Virtual Private Networks (VPNs) ....................15 Avaya Wireless Telephones and Subnets ............Subnets and IP Telephony Server Interfaces ................16 Network Performance Requirements..................17 Conclusion ......................Octiober 2008... -
Page 3: Introduction
(QoS), telephone switch integration and wireless security. 2.0 Wireless LAN Layout Considerations Avaya model 3616, 3620, 3626, 3641, and 3645 wireless telephones utilize a Wi-Fi network consisting of WLAN Access Points (APs) distributed throughout an enterprise environment. The required number and placement of APs in a given environment is driven by several factors, including intended coverage area, system capacity, access point type, power output, physical environment, and radio type. -
Page 4: Overlapping Coverage
The required minimum signal strength for all Avaya wireless telephones depend on the 802.11 frequency band and modulation used, and the data rates enabled on the AP. Recommended signal strength characteristics are summarized in the following table. -
Page 5: 802.11B/G Deployment Considerations
Installation Guide Avaya handsets have a site survey mode that should be used to validate the signal strength the wireless telephone is receiving from the AP. Although it is possible that Avaya handsets may operate at signal strengths which are weaker than... - Page 6 Installation Guide 802.11b/g Non-interfering Channels with Overlapping Cell Coverage If adjacent access points are set to the same channel, or utilize channels with overlapping frequency bands, the resulting interference will cause a significant reduction in the network performance and throughput, and will degrade overall voice quality. With more available channel options, the 802.11a wireless standard has improved the flexibility of WLAN layouts, and enabled the possibility for greater density of AP deployments.
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Page 7: Transmission Power
The transmission power of APs can be increased or decreased, to provide more or less AP radio coverage. For Avaya handsets, the transmission power setting must be the same for all APs in a facility. This will minimize the opportunity for higher-power devices to interfere with nearby lower- power devices, while providing consistent coverage. -
Page 8: Multipath And Signal Distortion
Multipath can cause severe network throughput degradation because of high error rates and packet retries. This in turn can lead to severe voice quality issues with Avaya wireless telephones. Correctly locating antennas and choosing the right type of antenna can help reduce the effects of multipath and interference. -
Page 9: Capacity
AP specific and can be found in the individual Configuration and Deployment Guides found on the Polycom web site. For Avaya 3641 and 3645 handset deployments, the maximum number of active calls must be defined individually for each of the three possible radio types –... -
Page 10: Push-To-Talk Multicasting Considerations
Avaya wireless telephones. To allow for bandwidth to be available for data traffic, Avaya provides the ability to limit the number of calls per AP within the Avaya Voice Priority Processor (AVPP). The “Calls per Access Point” setting limits the number of active Avaya wireless telephone calls on each AP. -
Page 11: Network Infrastructure Considerations
Avaya wireless telephone infrastructure equipment. 3.2 Assigning IP Addresses Avaya wireless telephones operate as LAN client devices and therefore require IP addresses to operate in the network. IP addresses can be assigned statically through the configuration menus on the handsets... -
Page 12: Software Updates Using Tftp
For dynamic IP addressing, a DHCP server is required. Avaya Voice Priority Processor (AVPP) also requires an IP address and supports either static or DHCP address assignment. When using one or more AVPP(s), one AVPP will serve as the Registration AVPP and must be assigned a static IP address. -
Page 13: Multiple Avpps
Delivery (U-APSD) and Call Admission Control (CAC), which are also defined in the 802.11e standard. Therefore, the AVPP is required to ensure the timing and delivery of Avaya voice packets, which is critical as the user hands off between APs and for improved battery life. The AVPP also provides call admission control and allows the number of calls per AP to be configured. -
Page 14: Security
802.11i standard. WPA2 includes the Advanced Encryption Standard (AES), which is widely accepted as one of the most powerful forms of encryption available. Avaya wireless telephones running on v2.0 or greater are fully compatible WPA2-certified wireless infrastructure equipment. -
Page 15: Using Virtual Lans
UDP channels between the infrastructure components that use UDP ports 5454 - 5458. The PTT mode of the Avaya 3626 and 3645 wireless telephones use the multicast IP address 224.0.1.116, which Avaya wireless telephones and infrastructure components also use to locate and maintain each other. -
Page 16: Avaya Wireless Telephones And Subnets
6.1 Subnets and IP Telephony Server Interfaces The AVPP can be placed on a separate subnet from either the APs or Avaya IP telephony server. The Avaya wireless telephones will find the AVPP and IP telephony server on another subnet through the default gateway (router) configured in the handset or DHCP server. -
Page 17: Network Performance Requirements
AVPPs to be installed, but requires higher performance from the router (see performance requirements below). The ability to cross a subnet boundary exists in either scenario, but the Avaya handsets will need to be power cycled to obtain new IP address within the new subnet. In addition, other configuration considerations must be addressed. - Page 18 AP. This may be different than the AVPP that is acting as a proxy for the wireless telephone to the IP PBX. Avaya handsets have a diagnostic option that includes jitter measurement. The calculated jitter shown in this mode is not the jitter described above because it includes delays in the AP, radio link and queue times inside the wireless telephone.
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Page 19: Conclusion
Authorized BusinessPartner or visit is at Avaya.com © 2008 Avaya Inc. All Rights Reserved. Avaya and the Avaya Logo are trademarks of Avaya Inc. and may be registered in certain jurisdictions. All trademarks identified by ®, TM or SM are registered marks, trademarks, and service marks, respectively, of Avaya Inc. All other trademarks are the property of their respective owners.
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