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An optional wireless module can be added to J179 and J189 telephones. This allows it to support up to 10 wireless Bluetooth headsets (one connected at any time).
When enabled, a 
icon is displayed at the top of the phone display.
This changes to a 
icon when a Bluetooth headset is connected to the phone.
The J179 and J189 can support both Bluetooth and traditional wired telephony headsets. You need to indicate which type of headset the phone should use. See Headset Selection.