SMC Networks 2870W - annexe 1 Manual page 42

Advanced Web Configuration (Wireless Bridge mode)
Go to Wireless | Basic Settings to change the Wireless Bridge
mode from Infrastructure to Adhoc, or you can also change the
SSID, Channel, Transmission Rate and Wireless Mode.
Note that when configured as a Wireless Bridge, changing the
channel of the SMC2870W has no effect because it must connect
to the network using the same channel as your Access Point. If
you wish to use a different channel, you must change the channel
in your Access Point's configuration.
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