Integrated Security Solutions; Configuring The System For Spectralink Netlink Telephones; Using The Gui To Enable Long Preambles - Cisco SD2008T-NA Configuration Manual

Configuring the System for SpectraLink NetLink Telephones

Integrated Security Solutions

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Configuring the System for SpectraLink NetLink Telephones
For best integration with the Cisco UWN Solution, SpectraLink NetLink Telephones require an extra
operating system configuration step: enable long preambles. The radio preamble (sometimes called a
header) is a section of data at the head of a packet that contains information that wireless devices need
when sending and receiving packets. Short preambles improve throughput performance, so they are
enabled by default. However, some wireless devices, such as SpectraLink NetLink phones, require long
preambles.
Use one of these methods to enable long preambles:
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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.
Follow this path to navigate to the 802.11b/g Global Parameters page:
Step 2
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.
Cisco Wireless LAN Controller Configuration Guide
5-4
Cisco UWN Solution operating system security is built around a robust 802.1X AAA (authorization,
authentication and accounting) engine, which allows operators to rapidly configure and enforce a
variety of security policies across the Cisco UWN Solution.
The controllers and lightweight access points are equipped with system-wide authentication and
authorization protocols across all ports and interfaces, maximizing system security.
Operating system security policies are assigned to individual WLANs, and lightweight access points
simultaneously broadcast all (up to 16) configured WLANs. This can eliminate the need for
additional access points, which can increase interference and degrade system throughput.
Operating system security uses the RRM function to continually monitor the air space for
interference and security breaches, and notify the operator when they are detected.
Operating system security works with industry-standard authorization, authentication, and
accounting (AAA) servers, making system integration simple and easy.
Using the GUI to Enable Long Preambles, page 5-4
Using the CLI to Enable Long Preambles, page 5-5
Chapter 5 Configuring Security Solutions
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