Symbol Spectrum24 AP-4100 Series Product Reference Manual page 14

Introduction
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6
Multiple APs can coexist as separate, individual networks at the same site
without interference using different Net_IDs. The Net_ID (ESS) can be
thought of as a Wireless LAN Network Identifier. These separate Wireless
LANs may be configured to use different channel assignments to avoid
RF interference.
Multiple APs wired together provide a network with better coverage area
and performance when using the same Net_IDs.
AP-4100 Series Access Point Product Reference Guide