Model 6730i IP Phone User Guide 103Making Calls• If you are in Speaker audio mode, lift the handset and press to switch betweenhandsfree and handset.• If you are in Speaker/headset audio mode, press to switch between handsfree andheadset.• When the handset is on hook, press to disconnect the call.When handsfree is on, the speaker light turns on.Using a HeadsetThe 6730i accepts headsets through the modular RJ9 handset jack on the back of the phone.Contact your telephone equipment retailer or distributor to purchase a compatible headset.Advanced Volume Controls for the Headset MicOn the 6730i, there are 3 options for the headset microphone volume. For more information aboutthe headset microphone, see “Headset Mic Volume” on page 28.To change the volume:1. Press to enter the Options list.2. Select Preferences and press 4.3. Use 2 to scroll down to Set Audio and press 4 to select.4. Press 2 to scroll down to Headset/Mic Volume and press 4 to select.5. Use 2 to scroll down the list and press 4 to select your desired volume.6. Press 4 to save changes and 3 to exit.7. If you do not wish to save changes, press 3 to return to the previous screen.Note: The 6730i supports handsets or headsets using the same jack. Both ahandset and a headset cannot be connected at the same time.Note: Customers should read and observe all safety recommendations containedin headset operating guides when using any headset.IP Phone UINote: By default, the volume for the headset microphone is set to medium.