Installing The Desk Phone Wirelessly - Cisco SPA 504G Owner's Manual

In general, to connect a headset connect the 2.5mm connector from the
headset into the headset port on the right side of the IP phone as shown in
the following graphic:

Installing the Desk Phone Wirelessly

The wireless adapter allows a desk phone to be used without a cord
connecting it to the Wireless Transmitter. The range of the Wireless
Adapter is 40 feet from the base unit.
Step 1) Installing the Wireless Transmitter
Plug the Wireless Transmitter into a free port on your router or switch.
Then plug the power supply into a wall outlet.
Step 2) Connect phones wirelessly (within 40') using the Wireless
Adapter
The Wireless Adaptor allows the desk phone to connect through the
Wireless Transmitter. It has a range of 40 feet. Plug the rectangle
E t h e r - net plug from the Wireless Adapter into the back of the phone
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