Siemens CP 1515 - Manual (Page 31)

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Industrial Ethernet Wireless LAN RLM Manager, CP 1515 Manager
C79000-G8976-C171-01
31
As is the case in any roaming environment, you must configure all Access
Points RLMs in multiple channel configurations with an identical network
name.
The preferred channel separation between the channels in neighboring cells
is 25 MHz (5 channels). Subject to the number of channels supported by the
PC cards CP 1515 available in your country, this means that you can apply up
to three different channels within your wireless network (see
Table
2 Recommended Sub-Channel Configurations for recommended channel
configurations).
Applying two channels that allow the maximum channel separation will
decrease the amount of channel cross-talk, and provide a noticeable
performance increase over networks with minimal channel separation.
To configure networks with multiple channels, refer to “ Frequency Channel
Management (page 138) ” .