Model 53i IP Phone User Guide 79Making CallsUsing a HeadsetThe 53i accepts headsets through the modular RJ9 jack on the back of the phone.Contact your telephone equipment retailer or distributor to purchase a compatibleheadset.Advanced Volume Controls for the Headset MicOn the 53i, there are 3 options for the headset microphone volume. For moreinformation about the headset microphone, see "Headset Mic Volume" on page 25.To change the volume:1. Press to enter the Options list.2. Select Preferences and press 4.3. Use to scroll down to Set Audio and press 4 to select.4. Press to scroll down to Headset/Mic Volume and press 4 to select.5. Use 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.Making and Receiving Calls Using a Headset1. Ensure that you have selected a headset audio mode by accessing the Options list(under option Preferences->Set Audio->Audio Mode on the IP Phone).2. Plug the headset into the jack.3. Press the key to obtain a dial tone or to answer an incoming call. Depend-ing on the audio mode selected from the options menu, a dial tone or an incomingcall is received on either the headset or the handsfree speakerphone.4. Press the key to end the call.Note: Customers should read and observe all safety recommendations con-tained in headset operating guides when using any headset.IP Phone UINote: By default, the volume for the headset microphone is set to medium.IP Phone UI
