Chapter 5 Configuring Security Solutions
Configuring the System for SpectraLink NetLink Telephones
Using the GUI to Enable Long Preambles
Use this procedure to use the GUI to enable long preambles to optimize the operation of SpectraLink NetLink phones on your wireless LAN.
Step 1 Log into the controller GUI.
Step 2 Follow this path to navigate to the 802.11b/g Global Parameters page:
Wireless > Global RF > 802.11b/g Network
If the Short Preamble Enabled box is checked, continue with this procedure. However, if the Short Preamble Enabled box is unchecked (which means that long preambles are enabled), the controller is already optimized for SpectraLink NetLink phones and you do not need to continue this procedure.
Step 3 Uncheck the Short Preamble Enabled check box to enable long preambles.
Step 4 Click Apply to update the controller configuration.
Note If you do not already have an active CLI session to the controller, Cisco recommends that you start a CLI session to reboot the controller and watch the reboot process. A CLI session is also useful because the GUI loses its connection when the controller reboots.
Step 5 Reboot the controller using Commands > Reboot > Reboot. Click OK in response to this prompt:
Configuration will be saved and switch will be rebooted. Click ok to confirm.
The controller reboots.
Step 6 Log back into the controller GUI and verify that the controller is properly configured. Follow this path to navigate to the 802.11b/g Global Parameters page:
Wireless > Global RF > 802.11b/g Network
If the Short Preamble Enabled box is unchecked, the controller is optimized for SpectraLink NetLink phones.
Using the CLI to Enable Long Preambles
Use this procedure to use the CLI to enable long preambles to optimize the operation of SpectraLink NetLink phones on your wireless LAN.
Step 1 Log into the controller CLI.
Step 2 Enter show 802.11b and check the Short preamble mandatory parameter. If the parameter indicates that short preambles are enabled, continue with this procedure. This example shows that short preambles are enabled:
Short Preamble mandatory....................... Enabled
However, if the parameter shows that short preambles are disabled (which means that long preambles are enabled), the controller is already optimized for SpectraLink NetLink phones and you do not need to continue this procedure. This example shows that short preambles are disabled:
| Short Preamble mandatory | ....................... Disabled | |||
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