H T T P : / / G LO B A L .T A L K S W I T C H . CO M 7T S - 4 0 0 U S E R G U I D EADJUSTING THE HEADSET RECEIVER VOLUMEIf you wish to use a headset with this telephone, we recommend a headset withoutbuilt-in amplifier. An amplifier for adjusting headset receiver volume is built into thistelephone. If you need to adjust the headset receiver volume:1. Press the headset button and listen to the dial tone.2. Press the right side of the button to increase the receiver volume.3. Press the left side of the button to decrease the receiver volume.4. Press the headset button or the button when the desired receivervolume is reached.Note: The headset and handset volumes are tied together. Changing the headset volumewill also change the handset volume.Note on selecting a headsetThe TS-400 has RJ22 and 2.5mm headset jacks. It is recommended to use a good qualityheadset with a microphone volume switch, such as the Plantronics® M.175, for optimalvoice level.ADJUSTING SPEAKERPHONE RECEIVER VOLUMEIf you need to adjust the speakerphone receiver volume:1. Press the button and listen to the dial tone.2. Press the right side of the button to increase the receiver volume.3. Press the left side of the button to decrease the receiver volume.4. Press the button or the button when the desired receivervolume is reached.ADJUSTING RINGER VOLUMEThe ringer volume can be adjusted using the toggle switchin the back of the phone. Ringer Volume settings are Hi,Low and Off.GOODBYESPEAKERVOLUMEVOLUMESPEAKERGOODBYEVOLUMEVOLUME