Sonos ZonePlayer 120 Product Manual page 12

10
If it works, your router's DHCP server may have run out of available IP addresses to assign to the controller. In most cases you
can log into your router by typing http://192.168.1.1 into your browser's address line (the IP address of your router may be
different). Check the DHCP settings and increase the number of IP addresses available in the DHCP scope.
If your Controller still does not recognize the Sonos component after completing this step, you can try step 2 below.
Turn off any 2.4GHz cordless phones.
2.
Some 2.4GHz cordless telephones can cause wireless interference. If turning off your 2.4GHz cordless phone resolves the
problem, you should consider switching to a 5.8Ghz or 900Mhz phone (or change the wireless channel your Sonos system is
operating on - see "The Controller is acting sluggish, or not all zones are visible" on page 10 for help with this step.)
Put 108 Mbps wireless routers into 54 Mbps mode.
3.
Sonos cannot function properly when a router is operating in turbo mode. In order to double the speed from 54 Mbps to 108
Mbps, the router goes into a wide bandwidth mode which utilizes most of the 2.4 GHz spectrum that the FCC has set aside for
802.11b/g devices. This means that interference (RF noise) will occur with any other 2.4 GHz device that is not operating on
the same channel as the 108 Mbps device (usually channel 6). While it is possible to put all of your wireless devices on
channel 6, it is unwise. The devices will have to compete for available bandwidth, and your entire wireless network will
become sluggish.
Change the wireless channel your Sonos system is operating on.
4.
You can follow the steps below to change the wireless channel.
The Controller is acting sluggish, or not all zones are visible
You are probably experiencing wireless interference. Change the wireless channel your Sonos system is operating on by
following the steps below. If this does not resolve the problem, please contact the Sonos Customer Support team and we'll be
glad to help.
• Using a SONOS CONTROL, select Music Menu -> Settings-> Advanced Settings. Select Wireless Channel and choose
another wireless channel from the list.
• Using the Sonos Controller for Mac or PC, select Preferences from the File (PC) or Sonos (Mac) menu. Click the
Advanced tab, and select another wireless channel.
It may take several seconds for the switch to take effect. If you have music playing, a short music dropout may occur during
the wireless channel change.
User Guide