Avaya Wireless AP-3, AP-4 Access Points

Avaya Wireless AP-3, AP-4 Access Points
Configuration Guide
Field Verified
Avaya Wireless AP-3, AP-4 Access Points
Configuration and Deployment Guide
This document details the specifications for configuring the Avaya Wireless AP-3, AP-4 series
access points (APs) with wireless IP telephones.
Product Summary
Approved product(s):
Avaya Wireless AP-3, AP-4
RF technology:
Direct-sequence spread spectrum (DS), 2.4
AP software version:
Firmware version 2.2.4 †
Handset models
Yes *
Radio mode
Maximum telephone calls per AP:
Auto-learn function:
Access point configuration parameters:
See Access Point Configuration below
Indoor range (typical):
See vendor specifications for AP
Required network topology:
Switched Ethernet
Network constraints:
Dedicated segment for wireless, single subnet
WEP capability:
Yes *
† Earlier and later software versions have not been tested for the Avaya Voice Priority Processor compliance, except as
noted. Refer to wireless IP telephone WLAN Compatibility List for field verified AP software versions.
* Telephone calls per AP must be configured in the system per documentation provided by Avaya. WEP and Automatic
Learn are programmed into each handset in addition to being configured in the AP.
Wireless IP Telephones
Wireless IP telephones use voice over IP technology on IEEE 802.11b-compatible wireless
local area networks (WLANs). Access points utilize radio frequencies to transmit signals to and
from the wireless IP telephones.
Access Point Capacity and Positioning
Each site is unique in its AP requirements. Please take the following points into account when
determining how many APs are needed and where they should be placed in the facility.
Handset range
There must be wireless LAN coverage wherever wireless IP telephones will be used. The
typical range for a wireless IP telephone is comparable to that of a laptop computer utilizing a
wireless LAN PC card. However, wireless IP telephones are likely to be used in areas where
© Copyright 2007 Avaya, Inc. All rights reserved
21-601641, Issue 1, May 2007
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Avaya AP-3, AP-4 Access Points
Configuration Guide
Field Verified
data devices are not typically used, such as stairwells and outdoor areas. Wireless IP
telephones have a Site Survey mode that displays dBm levels to determine adequate WLAN
coverage. Refer to the wireless IP telephone Configuration and Administration document
for details about this feature.
Number of handsets per access point
Estimate the number of wireless IP telephones and their anticipated call volume per AP area
to ensure that the maximum number of calls per AP will not be exceeded. In this estimate,
consider the data rates at which the handsets will operate. Higher data rates can only be
sustained while well within the range of the AP. If the wireless IP telephones will be operating
near the limits of the RF coverage from the AP, they will automatically drop to 1 Mb/s
operation. Wireless IP telephones require approximately 15% of the available bandwidth per
call for 1 Mb/s operation, approximately 10% of the available bandwidth per call for 2 Mb/s
operation, approximately 7% of the available bandwidth per call for 5.5 Mb/s operation, and
approximately 5% of the available bandwidth per call for 11Mb/s operation.
Note: the maximum number of telephone calls per AP quoted in the summary table above is
based on 11 Mb/s operation, and will be reduced if some or all wireless IP telephones are
operating at 1, 2, or 5.5 Mb/s.
LAN bandwidth
Estimate anticipated peak call volume to ensure that the LAN has enough bandwidth available
to handle the network traffic generated by all of the wireless devices. Network traffic can be
monitored/analyzed using a network sniffer or a simple network management protocol (SNMP)
Number of other wireless devices per AP
The wireless IP telephones share bandwidth with other wireless devices. To ensure adequate
RF bandwidth availability, consider the number of wireless data devices in use per AP.
Notes on Configuration
The AVPP provides voice prioritization, called SpectraLink Voice Priority or
SVP, for quality of service. SVP must be enabled in the AP. Contact your AP
vendor if you need to upgrade the AP software in order to enable SVP.
If you encounter difficulties or have questions regarding the configuration process, please
contact Avaya Technical Support at 1 800 242-2121 (USA only) or your local authorized
Avaya dealer.
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Avaya AP-3, AP-4 Access Points
Configuration Guide
Field Verified
Access Point Configuration
1. Connect to the AP via Netscape or Internet Explorer by navigating to the URL
http://<IP_Addr> (where <IP_Addr> is the IP address of the AP).
Note: these configuration steps can also be accomplished using the SNMP-based Avaya
ScanTool program.
2. From the main page, click on the Configure link.
3. To configure WEP settings, obtain the key values from the local network administrator and
use the Avaya AP-3, AP-4 User Guide for guidance in programming the encryption
settings. The WEP configuration screen is reached from the main menu by clicking on
Configure, followed by Security, followed by Encryption.
4. Note that the wireless IP telephones must each be configured manually with the identical
WEP settings.
5. Click Configure, then click the Interfaces link and choose the appropriate radio (Slot A or
Slot B) to configure.
6. From the Interfaces tab confirm that the RTS/CTS Medium Reservation Threshold is greater
than 600 or disabled.
7. Set the Multicast Transmit Rate to 11Mb/s.
8. Next go to the Bridge tab, select Avaya VoIP to ensure that SpectraLink Voice Priority
(SVP) is enabled.
Conditional: If the AP’s software version is 2.5.xx or later, SVP must be activated using
the Avaya command line interface (CLI).
Connect to the access point via serial interface or Telnet.
9. To check to see if SVP is enabled:
Type show spectralink, then press Enter; it will display enabled or disabled.
10. To enable SVP:
Type set speclinkstatus enable, then press Enter.
11. Conditional: If you are not using a Avaya Voice Priority Processor and intend to use
802.11b/g mode, you must also enter the command:
Type set speclinklegacysupport, then press Enter.
12. From the Bridge tab, select Advanced Filtering. Enable the Proxy ARP function and disable
IP/ARP Filtering.
13. From the Commands tab, restart the AP.
The AP is now ready for use with wireless IP telephones.
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