25Making Calls with the Optional Headset1. Plug the headset into the Headset jack on the side of the base or side ofthe cordless handset.2. Adjust the headset to rest comfortably on top of your head or overyour ear.3. Move the microphone to approximately 2 to 3 inches from your mouth.4. For the base, press the Headset button on base and the phoneautomatically selects first available, if both lines are available, Line 1will be used.5. For the cordless handset, press the Talk button.6. Wait for a dial tone, and then dial the phone number.7. Press Headset button (on base) or End button (on handset) whenfinished.CAUTION: Use only Thomson Inc. 5-2425 headset that is compatiblewith this unit.NOTE: If the headset is not connected (or if not completely inserted intoheadset jack), an error tone is heard when the Headset button is pressed.Pre-dialing1. With the phone idle, manually enter the telephone number. Thetelephone number shows in the display.2. Press the DIAL soft key (on base only), Speaker button, Talk button(handset only), or Line 1 or Line 2 button to take a line, and then thetelephone number will be dialed out.Answering a CallFor cordless handset:1. Press the Talk button to answer the call in receiver mode,-OR-2. Press the Spk button to answer the call in speakerphone mode,-OR-3. Press the corresponding LINE soft key to answer the call in receivermode.4. When finished, press END button.Telephone Operation