Basic settings
Both switches on the back pushed to the center.
Cord goes into lower plug on phone.
Handset plugs into regular port.
Options>Auto Off-Hook>Wireless Headset
Options>Hands Free Mode>Disabled
If they have the RD-1 ring detect pod, plug it into the headset base and tape the microphone to the speaker on the phone.
YouTube Tutorial: https://www.youtube.com/watch?v=x3TU1TXSPAc