Avaya Communication Server 1000 Installation And Commissioning Manual page 216

Troubleshooting WLAN IP Telephony installations
Configure the following settings:
• dtim-interval 3
• protocol 119 enabled
• less than 10 ms voice latency
• voice WMM enabled
For more information, see the Cisco Aironet 1200 Series User Guide.
WLAN Security Switch 2270 and the Cisco 4400 Series WLAN Controller
Alpha The 2270 and 4400 infrastructure has the following requirements:
• Turn off aggressive load balancing.
• Disable MAC filtering authentication for voice SSID and use only static WEP (40 or 104
bit) encryption.
• Configure 802.11b radio data rates as follows:
- 1Mb/s—Mandatory
- 2Mb/s—Mandatory
- 5.5Mb/s—Supported
- 11Mb/s—Supported
• Uncheck enable short preamble.
• Enable Multicast Support on the WLAN Security Switch 2270 to enable use of the PTT
feature for Avaya Handsets.
With the following settings, you can use Multicast for some of the regular WLAN IP
Telephony Manager 2245 and PBX control traffic:
Switch > General: Ethernet Multicast Support = Enabled: (2.2) Switch > General, Ports:
click ports 1 edit on right hand side of the screen and configure Multicast Appliance Mode
= Enabled.
• Turn off Rogue AP Detection.
• Turn off AutoRF unless you are running software from Cisco version 4.0.206.0 or later. If
you are running version 4.0.206.0 or later, configure the following additional parameters
for AutoRF:
Noise Measurement
Load Measurement
Signal Measurement
Coverage Measurement
216 Avaya WLAN IP Telephony Installation and Commissioning
Parameter Setting
3600 Required
3600 Required
3600 Required
3600 Required
Importance
November 2010